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Bsc6900 gsm-site-maintenance-guide
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Bsc6900 gsm-site-maintenance-guide

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  • 1. BSC6900 GSM V900R012C01 Site Maintenance Guide Issue 05 Date 2011-05-19 HUAWEI TECHNOLOGIES CO., LTD.
  • 2. Copyright © Huawei Technologies Co., Ltd. 2011. All rights reserved. No part of this document may be reproduced or transmitted in any form or by any means without prior written consent of Huawei Technologies Co., Ltd. Trademarks and Permissions and other Huawei trademarks are trademarks of Huawei Technologies Co., Ltd. All other trademarks and trade names mentioned in this document are the property of their respective holders. Notice The purchased products, services and features are stipulated by the contract made between Huawei and the customer. All or part of the products, services and features described in this document may not be within the purchase scope or the usage scope. Unless otherwise specified in the contract, all statements, information, and recommendations in this document are provided "AS IS" without warranties, guarantees or representations of any kind, either express or implied. The information in this document is subject to change without notice. Every effort has been made in the preparation of this document to ensure accuracy of the contents, but all statements, information, and recommendations in this document do not constitute the warranty of any kind, express or implied. Huawei Technologies Co., Ltd. Address: Huawei Industrial Base Bantian, Longgang Shenzhen 518129 People's Republic of China Website: http://www.huawei.com Email: support@huawei.com Issue 05 (2011-05-19) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. i
  • 3. BSC6900 GSM Site Maintenance Guide About This Document About This Document Purpose This document describes how to perform the hardware maintenance tasks after the BSC6900 commissioning, to maintain the hardware operation of the BSC6900. The maintenance tasks involve powering on/off the BSC6900 cabinet, replacing components, and routine maintenance tasks such as checking LEDs and monitoring the site environment. Version The following table lists the product version related to the document. Product Name Version BSC6900 V900R012C01 Intended Audience This document is intended for: l Network planning engineers l System engineers l Field engineers Organization 1 Changes in the BSC6900 GSM Site Maintenance Guide This chapter describes the changes in the BSC6900 GSM Site Maintenance Guide. 2 Site Maintenance Preparations This chapter describes the preparations for the BSC6900 site maintenance, including the tool and spare part preparations. 3 Routine Hardware Maintenance Items Issue 05 (2011-05-19) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. iii
  • 4. BSC6900 GSM Site Maintenance Guide About This Document This chapter describes the routine hardware maintenance items of the BSC6900. Different items require different maintenance methods. 4 Powering On/Off the BSC6900 This chapter describes how to power on and power off the BSC6900. The following is described: the distribution of the power switches, powering on the BSC6900 cabinet, powering off the BSC6900 cabinet in a normal situation, and powering off the BSC6900 cabinet in case of emergencies. 5 Cleaning the Fan Box This chapter describes how to clean a fan box. To ensure stability and reliability of the equipment, the maintenance personnel should clean each fan box (including the fan boxes in the service subracks and the fan boxes in the independent fan subrack) regularly, preferably once every year. 6 Cleaning and Replacing the Air Filters This chapter describes how to clean and replace an air filter. The air filter protects the boards and the BSC6900 from dust. If an air filter is damaged, you must replace it with a new one in time. 7 Replacing Boards and Modules This chapter describes how to replace boards and modules in the BSC6900 cabinet, which involves replacing the boards and modules, acknowledging a successful replacement, and handling of the faulty boards. Each section provides an estimated time for the replacement of the board as a reference. 8 Replacing the Cables This chapter describes how to replace the Ethernet cable, E1/T1 cable, optical cable, clock signal cable, cable to the alarm box, and power distribution box monitoring cable. This chapter also describes how to check that the cables are successfully replaced and how to handle the faulty cables. 9 LEDs on the Boards This chapter describes the LEDs on the BSC6900 boards. 10 DIP Switches on Components This chapter describes the DIP switches on the boards and subracks of the BSC6900. 11 BSC6900 Site Maintenance Record This chapter describes the BSC6900 site maintenance record. Conventions Symbol Conventions The symbols that may be found in this document are defined as follows. iv Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. Issue 05 (2011-05-19)
  • 5. BSC6900 GSM Site Maintenance Guide About This Document Symbol Description Indicates a hazard with a high level of risk, which if not avoided, will result in death or serious injury. Indicates a hazard with a medium or low level of risk, which if not avoided, could result in minor or moderate injury. Indicates a potentially hazardous situation, which if not avoided, could result in equipment damage, data loss, performance degradation, or unexpected results. Indicates a tip that may help you solve a problem or save time. Provides additional information to emphasize or supplement important points of the main text. General Conventions The general conventions that may be found in this document are defined as follows. Convention Description Times New Roman Normal paragraphs are in Times New Roman. Boldface Names of files, directories, folders, and users are in boldface. For example, log in as user root. Italic Book titles are in italics. Courier New Examples of information displayed on the screen are in Courier New. Command Conventions The command conventions that may be found in this document are defined as follows. Convention Boldface The keywords of a command line are in boldface. Italic Command arguments are in italics. [] Items (keywords or arguments) in brackets [ ] are optional. { x | y | ... } Optional items are grouped in braces and separated by vertical bars. One item is selected. [ x | y | ... ] Issue 05 (2011-05-19) Description Optional items are grouped in brackets and separated by vertical bars. One item is selected or no item is selected. Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. v
  • 6. BSC6900 GSM Site Maintenance Guide About This Document Convention Description { x | y | ... }* Optional items are grouped in braces and separated by vertical bars. A minimum of one item or a maximum of all items can be selected. [ x | y | ... ]* Optional items are grouped in brackets and separated by vertical bars. Several items or no item can be selected. GUI Conventions The GUI conventions that may be found in this document are defined as follows. Convention Description Boldface Buttons, menus, parameters, tabs, window, and dialog titles are in boldface. For example, click OK. > Multi-level menus are in boldface and separated by the ">" signs. For example, choose File > Create > Folder. Keyboard Operations The keyboard operations that may be found in this document are defined as follows. Format Description Key Press the key. For example, press Enter and press Tab. Key 1+Key 2 Press the keys concurrently. For example, pressing Ctrl+Alt +A means the three keys should be pressed concurrently. Key 1, Key 2 Press the keys in turn. For example, pressing Alt, A means the two keys should be pressed in turn. Mouse Operations The mouse operations that may be found in this document are defined as follows. Action Click Select and release the primary mouse button without moving the pointer. Double-click Press the primary mouse button twice continuously and quickly without moving the pointer. Drag vi Description Press and hold the primary mouse button and move the pointer to a certain position. Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. Issue 05 (2011-05-19)
  • 7. BSC6900 GSM Site Maintenance Guide Contents Contents About This Document...................................................................................................................iii 1 Changes in the BSC6900 GSM Site Maintenance Guide...................................................1-1 2 Site Maintenance Preparations................................................................................................2-1 2.1 Site Maintenance Tool Preparations...............................................................................................................2-2 2.2 Spare Part Preparations...................................................................................................................................2-2 3 Routine Hardware Maintenance Items..................................................................................3-1 3.1 Equipment Room Maintenance Items.............................................................................................................3-2 3.2 Maintaining the Power Supply and Grounding Systems................................................................................3-2 3.3 Cabinet Maintenance Items.............................................................................................................................3-4 3.4 Cable Maintenance Items................................................................................................................................3-5 4 Powering On/Off the BSC6900................................................................................................4-1 4.1 Distribution of Power Switches on the Common Power Distribution Box.....................................................4-2 4.2 Distribution of Power Switches on the High-Power PDB..............................................................................4-4 4.3 Powering On the Cabinet................................................................................................................................4-5 4.4 Powering Off the Cabinet in a Normal Situation............................................................................................4-8 4.5 Powering Off the Cabinet in Emergency Cases..............................................................................................4-9 5 Cleaning the Fan Box.................................................................................................................5-1 6 Cleaning and Replacing the Air Filters.................................................................................6-1 6.1 Position of the Air Filters................................................................................................................................6-2 6.2 Cleaning the Air Filter at the Bottom of the N68E-22 Cabinet......................................................................6-3 6.3 Cleaning the Air Filter on the Inner Side of the Cabinet Door.......................................................................6-5 6.4 Replacing the Air Filters.................................................................................................................................6-6 7 Replacing Boards and Modules...............................................................................................7-1 7.1 Strategy on Replacing Legacy Components in an Upgrade Scenario.............................................................7-4 7.2 Procedure for Replacing a Board....................................................................................................................7-4 7.2.1 Removing a Board..................................................................................................................................7-5 7.2.2 Inserting a Board....................................................................................................................................7-8 7.3 Replacing a DPUa/DPUc/DPUd/DPUf Board..............................................................................................7-10 7.4 Replacing an EIUa Board..............................................................................................................................7-13 7.5 Replacing an FG2a Board.............................................................................................................................7-16 Issue 05 (2011-05-19) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. vii
  • 8. BSC6900 GSM Site Maintenance Guide Contents 7.6 Replacing an FG2c Board.............................................................................................................................7-19 7.7 Replacing a GCUa/GCGa Board...................................................................................................................7-23 7.8 Replacing a GOUa Board..............................................................................................................................7-25 7.9 Replacing a GOUc Board..............................................................................................................................7-29 7.10 Replacing an MDMC Board.......................................................................................................................7-32 7.11 Replacing an OIUa Board...........................................................................................................................7-34 7.12 Replacing an OMU Board...........................................................................................................................7-37 7.12.1 Checking the OMU Information .......................................................................................................7-40 7.12.2 Backing Up System Files...................................................................................................................7-42 7.12.3 Replacing the OMU Board.................................................................................................................7-43 7.12.4 Installing the Operating System and Loading the OMU Applications..............................................7-47 7.12.5 Verifying OMU Board Replacement ................................................................................................7-49 7.13 Replacing an SCUa Board...........................................................................................................................7-50 7.14 Replacing a TNUa Board............................................................................................................................7-53 7.15 Replacing an XPUa Board..........................................................................................................................7-56 7.16 Replacing an XPUb Board..........................................................................................................................7-59 7.17 Replacing a WOPB Board...........................................................................................................................7-62 7.18 Replacing a Subrack....................................................................................................................................7-64 7.19 Replacing the Independent Fan Subrack.....................................................................................................7-66 7.20 Replacing the Power Distribution Box........................................................................................................7-67 7.21 Replacing the Fan Box................................................................................................................................7-73 7.22 Replacing the Pluggable Optical Module....................................................................................................7-78 7.23 Replacing an Optical Splitter/Combiner.....................................................................................................7-80 7.24 Replacing the KVM....................................................................................................................................7-82 7.25 Replacing the LAN Switch.........................................................................................................................7-84 7.26 Replacing the GBAM..................................................................................................................................7-85 8 Replacing the Cables.................................................................................................................8-1 8.1 Replacing a Power Cable................................................................................................................................8-3 8.2 Replacing an E1/T1 Cable...............................................................................................................................8-5 8.3 Replacing an Optical Cable.............................................................................................................................8-7 8.4 Replacing an Ethernet Cable...........................................................................................................................8-9 8.5 Replacing a Clock Signal Cable....................................................................................................................8-11 8.6 Replacing a Y-Shaped Clock Cable..............................................................................................................8-13 8.7 Replacing an Inter-TNUa Cable....................................................................................................................8-14 8.8 Replacing an EMU RS485 Communication Cable.......................................................................................8-16 8.9 Replacing a Signal Cable to the Alarm Box.................................................................................................8-17 8.10 Replacing the Monitoring Signal Cable for the Power Distribution Box...................................................8-18 8.11 Replacing the Monitoring Signal Cable for the Independent Fan Subrack.................................................8-20 9 LEDs on the Boards....................................................................................................................9-1 9.1 LEDs on the DPUa Board...............................................................................................................................9-3 9.2 LEDs on the DPUc Board...............................................................................................................................9-3 9.3 LEDs on the DPUd Board...............................................................................................................................9-4 viii Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. Issue 05 (2011-05-19)
  • 9. BSC6900 GSM Site Maintenance Guide Contents 9.4 LEDs on the EIUa Board................................................................................................................................ 9-4 9.5 LEDs on the FG2a Board................................................................................................................................9-5 9.6 LEDs on the FG2c Board................................................................................................................................9-6 9.7 LEDs on the GCUa Board...............................................................................................................................9-7 9.8 LEDs on the GOUa Board.............................................................................................................................. 9-7 9.9 LEDs on the GOUc Board.............................................................................................................................. 9-8 9.10 LEDs on the MDMC Board..........................................................................................................................9-9 9.11 LEDs on the OIUa Board..............................................................................................................................9-9 9.12 LEDs on the OMUa/OMUb Board.............................................................................................................9-10 9.13 LEDs on the PAMU Board.........................................................................................................................9-11 9.14 LEDs on the PEUa Board............................................................................................................................9-11 9.15 LEDs on the POUc Board...........................................................................................................................9-12 9.16 LEDs on the SCUa Board...........................................................................................................................9-13 9.17 LEDs on the TNUa Board...........................................................................................................................9-13 9.18 LEDs on the XPUa Board...........................................................................................................................9-14 9.19 LEDs on the XPUb Board...........................................................................................................................9-15 10 DIP Switches on Components.............................................................................................10-1 10.1 DIP Switch on the Subrack.........................................................................................................................10-2 10.2 DIP Switches on the EIUa Board................................................................................................................10-4 10.3 DIP Switch on the MDMC Board...............................................................................................................10-6 10.4 DIP Switch on the PAMU Board................................................................................................................10-7 10.5 DIP Switches on the PEUa Board...............................................................................................................10-7 10.6 DIP Switch on the PFCU Board................................................................................................................10-10 10.7 Pins on the PFCB Board............................................................................................................................10-12 11 BSC6900 Site Maintenance Record.....................................................................................11-1 Issue 05 (2011-05-19) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. ix
  • 10. BSC6900 GSM Site Maintenance Guide Figures Figures Figure 4-1 Mapping between the power switches and the components in the MPR (configured with OMU board)/ EPR/TCR...............................................................................................................................................................4-2 Figure 4-2 Mapping between the power switches and the components in the MPR (configured with GBAM) ...............................................................................................................................................................................4-3 Figure 4-3 Distribution of power switches on the power distribution box of the MPR/EPR/TCR..................... 4-4 Figure 6-1 Air filters in the single-door N68E-22 cabinet...................................................................................6-2 Figure 6-2 Air filters in the double-door N68E-22 cabinet..................................................................................6-3 Figure 6-3 Removing the air filter from the bottom of the cabinet......................................................................6-4 Figure 6-4 Installing the air filter at the bottom of the cabinet............................................................................ 6-5 Figure 7-1 Removing a board(configuring the new ejector levers)..................................................................... 7-6 Figure 7-2 Removing a board(configuring the old ejector levers).......................................................................7-7 Figure 7-3 Installing a BSC6900 board(configuring the new ejector levers)...................................................... 7-9 Figure 7-4 Installing a BSC6900 board(configuring the old ejector levers)......................................................7-10 Figure 7-5 Settings of DIP switch S2 on the MDMC board..............................................................................7-33 Figure 7-6 Procedure for determining an operation...........................................................................................7-38 Figure 7-7 Procedures for replacing an OMU board..........................................................................................7-39 Figure 7-8 Removing an OMU board that is configured with new ejector levers.............................................7-44 Figure 7-9 Installing an OMU board that is configured with new ejector levers...............................................7-45 Figure 7-10 Removing an OMU board that is configured with old ejector levers.............................................7-46 Figure 7-11 Installing an OMU board that is configured with old ejector levers..............................................7-47 Figure 7-12 Replacing a WOPB board...............................................................................................................7-63 Figure 7-13 Rear panel of the common power distribution box........................................................................7-68 Figure 7-14 Rear panel of the high-power distribution box...............................................................................7-69 Figure 7-15 DIP switch on the PFCU................................................................................................................7-74 Figure 7-16 DIP switch on the PFCU................................................................................................................7-75 Figure 7-17 Jumper pins on the PFCB...............................................................................................................7-75 Figure 7-18 Jumper pins on the PFCB...............................................................................................................7-76 Figure 7-19 Removing the fan box.....................................................................................................................7-77 Figure 7-20 Replacing an optical module..........................................................................................................7-79 Figure 7-21 Distribution of the power switches in the MPR.............................................................................7-83 Figure 7-22 Front panel of the power distribution box......................................................................................7-87 Figure 10-1 Cover plate for the DIP switch on the subrack...............................................................................10-2 Figure 10-2 Layout of the DIP switches on the EIUa board..............................................................................10-4 Figure 10-3 DIP switch on the MDMC board....................................................................................................10-6 Issue 05 (2011-05-19) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. xi
  • 11. BSC6900 GSM Site Maintenance Guide Figures Figure 10-4 Layout of the DIP switch on the PAMU board..............................................................................10-7 Figure 10-5 Layout of the DIP switches on the PEUa board.............................................................................10-8 Figure 10-6 DIP switch on the PFCU board....................................................................................................10-11 Figure 10-7 DIP switch on the PFCU board....................................................................................................10-11 Figure 10-8 Pins on the PFCB board................................................................................................................10-12 Figure 10-9 Pins on the PFCB board................................................................................................................10-13 xii Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. Issue 05 (2011-05-19)
  • 12. BSC6900 GSM Site Maintenance Guide Tables Tables Table 2-1 Maintenance items and tools for site maintenance...............................................................................2-2 Table 2-2 Recommended BSC6900 spare parts...................................................................................................2-3 Table 3-1 Maintenance items of the equipment room..........................................................................................3-2 Table 3-2 Maintenance items of the power supply and grounding systems.........................................................3-3 Table 3-3 BSC6900 cabinet maintenance items...................................................................................................3-4 Table 3-4 Cable maintenance items......................................................................................................................3-5 Table 4-1 Mapping between the power switches and the components in the MPR (configured with OMU board)/ EPR/TCR...............................................................................................................................................................4-2 Table 4-2 Mapping between the power switches and the components in the MPR (configured with GBAM) ...............................................................................................................................................................................4-3 Table 4-3 Mapping between the power switches and the components in the MPR/EPR/TCR............................4-4 Table 4-4 Checklist for the power supply to the cabinet components..................................................................4-6 Table 4-5 Handling power failures in the components in the cabinet..................................................................4-6 Table 7-1 Strategy on replacing faulty legacy components of the BSC6900.......................................................7-4 Table 7-2 OMU information table .....................................................................................................................7-41 Table 7-3 Checklist for the new power distribution box....................................................................................7-70 Table 7-4 Checklist for the new power distribution box....................................................................................7-72 Table 7-5 Setting of the DIP switch on the PFCU.............................................................................................7-74 Table 7-6 Setting of the DIP switch on the PFCU.............................................................................................7-75 Table 7-7 Setting of the jumper pins on the PFCB.............................................................................................7-75 Table 7-8 Setting of the jumper pins on the PFCB.............................................................................................7-76 Table 7-9 Checklist for replacing the fan box....................................................................................................7-77 Table 7-10 Parameters of optical modules.........................................................................................................7-79 Table 7-11 Checklist for monitoring optical splitter/combiner replacement......................................................7-81 Table 7-12 Checklist for LAN switch replacement............................................................................................7-85 Table 7-13 Checklist for GBAM replacement...................................................................................................7-87 Table 8-1 Setting switches SW1 to SW6..............................................................................................................8-4 Table 8-2 Checklist for power cable replacement................................................................................................8-5 Table 8-3 Checklist for E1/T1 cable replacement................................................................................................8-7 Table 8-4 Checklist for optical cable replacement...............................................................................................8-9 Table 8-5 Checklist for Ethernet cable replacement...........................................................................................8-11 Table 8-6 Checklist for clock signal cable replacement.....................................................................................8-12 Table 8-7 Checklist for the new Y-shaped clock cable......................................................................................8-14 Table 8-8 Checklist for inter-TNUa cable replacement.....................................................................................8-15 Issue 05 (2011-05-19) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. xiii
  • 13. BSC6900 GSM Site Maintenance Guide Tables Table 8-9 Checklist for monitoring cable replacement...................................................................................... 8-19 Table 8-10 Checklist for monitoring signal cable replacement..........................................................................8-21 Table 9-1 LEDs on the DPUa board.....................................................................................................................9-3 Table 9-2 LEDs on the DPUc board.....................................................................................................................9-3 Table 9-3 LEDs on the DPUd board....................................................................................................................9-4 Table 9-4 LEDs on the EIUa board......................................................................................................................9-5 Table 9-5 LEDs on the FG2a board......................................................................................................................9-5 Table 9-6 LEDs on the FG2c board......................................................................................................................9-6 Table 9-7 LEDs on the GCUa board....................................................................................................................9-7 Table 9-8 LEDs on the GOUa board....................................................................................................................9-7 Table 9-9 LEDs on the GOUc board....................................................................................................................9-8 Table 9-10 LEDs on the MDMC board................................................................................................................9-9 Table 9-11 LEDs on the OIUa board....................................................................................................................9-9 Table 9-12 LEDs on the OMUa/OMUb board...................................................................................................9-10 Table 9-13 LEDs on the PAMU board...............................................................................................................9-11 Table 9-14 LEDs on the PEUa board.................................................................................................................9-12 Table 9-15 LEDs on the POUc board.................................................................................................................9-12 Table 9-16 LEDs on the SCUa board.................................................................................................................9-13 Table 9-17 LEDs on the TNUa board................................................................................................................ 9-14 Table 9-18 LEDs on the XPUa board.................................................................................................................9-14 Table 9-19 LEDs on the XPUb board................................................................................................................ 9-15 Table 10-1 Description about the bits.................................................................................................................10-3 Table 10-2 Setting of the DIP switch................................................................................................................. 10-3 Table 10-3 Description of the DIP switches on the EIUa board........................................................................10-5 Table 10-4 Description of the different DIP switches........................................................................................10-6 Table 10-5 DIP switch on the MDMC board.....................................................................................................10-6 Table 10-6 DIP switch on the PAMU board...................................................................................................... 10-7 Table 10-7 Description about DIP switches on the PEUa board........................................................................10-9 Table 10-8 DIP switch on the PFCU board (in a fan box of the service subrack)...........................................10-11 Table 10-9 DIP switch on the PFCU board (in the independent fan subrack).................................................10-12 Table 10-10 Pins on the PFCB board (in a fan box of the service subrack)....................................................10-12 Table 10-11 Pins on the PFCB board (in the independent fan subrack)..........................................................10-13 Table 11-1 BSC6900 site maintenance record...................................................................................................11-1 xiv Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. Issue 05 (2011-05-19)
  • 14. BSC6900 GSM Site Maintenance Guide 1 Changes in the BSC6900 GSM Site Maintenance Guide 1 Changes in the BSC6900 GSM Site Maintenance Guide This chapter describes the changes in the BSC6900 GSM Site Maintenance Guide. 05 (2011-05-19) This is the fifth commercial release of V900R012C01. Compared with issue 04 (2010-11-30), this issue includes the following new topics: l 7.23 Replacing an Optical Splitter/Combiner Compared with issue 04 (2010-11-30), this issue incorporates the following changes: Content Description 8.2 Replacing an E1/T1 Cable The procedure of removing and connecting the fastening screws on both ends of the cable is optimized. 8.7 Replacing an Inter-TNUa Cable The procedure of removing and connecting the fastening screws on both ends of the cable is optimized. Compared with issue 04 (2010-11-30), this issue does not exclude any topics. 04 (2010-11-30) This is the fourth commercial release of V900R012C01. Compared with issue 03 (2010-09-20), this issue does not include any new topics. Compared with issue 03 (2010-09-20), this issue incorporates the following changes: Content 7 Replacing Boards and Modules Issue 05 (2011-05-19) Description The description about the caution is optimized. Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. 1-1
  • 15. BSC6900 GSM Site Maintenance Guide 1 Changes in the BSC6900 GSM Site Maintenance Guide Compared with issue 03 (2010-09-20), this issue does not exclude any topics. 03 (2010-09-20) This is the third commercial release of V900R012C01. Compared with issue 02 (2010-06-21), this issue does not include any new topics. Compared with issue 02 (2010-06-21), this issue incorporates the following changes: Content Description 7.12 Replacing an OMU Board The procedure for this task is optimized. Compared with issue 02 (2010-06-21), this issue does not exclude any topics. 02 (2010-06-21) This is the second commercial release of V900R012C01. Compared with issue 01 (2010-04-10), this issue does not include any new topics. Compared with issue 01 (2010-04-10), this issue incorporates the following changes: Content Description 4.3 Powering On the Cabinet The description about the caution is optimized. Compared with issue 01 (2010-04-10), this issue does not exclude any topics. 01 (2010-04-10) This is the first commercial release of V900R012C01. Compared with issue 03 (2009-12-05) of V900R011C00, this issue includes the following new topics: l 7.1 Strategy on Replacing Legacy Components in an Upgrade Scenario l 7.10 Replacing an MDMC Board l 7.17 Replacing a WOPB Board l 7.24 Replacing the KVM l 7.25 Replacing the LAN Switch l 7.26 Replacing the GBAM Compared with issue 03 (2009-12-05) of V900R011C00, this issue incorporates the following changes: 1-2 Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. Issue 05 (2011-05-19)
  • 16. BSC6900 GSM Site Maintenance Guide 1 Changes in the BSC6900 GSM Site Maintenance Guide Content Description 7.3 Replacing a DPUa/DPUc/ DPUd/DPUf Board The procedure for replacing the faulty DPUa/DPUf board is added. 7.20 Replacing the Power Distribution Box The procedure for replacing the faulty the common power distribution box is added. Compared with issue 03 (2009-12-05) of V900R011C00, this issue does not exclude any topics. Issue 05 (2011-05-19) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. 1-3
  • 17. BSC6900 GSM Site Maintenance Guide 2 Site Maintenance Preparations 2 Site Maintenance Preparations About This Chapter This chapter describes the preparations for the BSC6900 site maintenance, including the tool and spare part preparations. 2.1 Site Maintenance Tool Preparations This section lists the tools required for BSC6900 site maintenance. These tools must be placed in the equipment room or at nearby places for easy access. 2.2 Spare Part Preparations This section describes the spare parts required for BSC6900 site maintenance. These spare parts must be placed in the equipment room or at nearby places for easy access. Issue 05 (2011-05-19) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. 2-1
  • 18. BSC6900 GSM Site Maintenance Guide 2 Site Maintenance Preparations 2.1 Site Maintenance Tool Preparations This section lists the tools required for BSC6900 site maintenance. These tools must be placed in the equipment room or at nearby places for easy access. Table 2-1 lists the maintenance items and tools. Table 2-1 Maintenance items and tools for site maintenance Item Tools Cleaning the fan box ESD wrist strap, Phillips screwdriver, vacuum cleaner, ESD soft brush, and clean cotton cloth Cleaning the air filters ESD wrist strap, Phillips screwdriver, and clean cotton cloth Replacing a board ESD wrist strap, Phillips screwdriver, flat-head screwdriver, ESD box or bag, clean cotton cloth, and fiber cleaner Replacing the fan box, power distribution box, or subrack ESD wrist strap, Phillips screwdriver, flat-head screwdriver, ESD box or bag, diagonal pliers, dry cotton cloth, and fiber cleaner Replacing the cables ESD wrist strap, Ethernet meter, Ethernet cable pliers, flat-head screwdriver, clean cotton cloth, fiber cleaner, ESD gloves, and diagonal pliers Tools summary for the BSC6900 site maintenance ESD gloves, ESD wrist strap, Phillips screwdriver, flat-head screwdriver, ESD box or bag, dustfree cotton cloth, fiber cleaner, Ethernet cable tester, Ethernet cable pliers, vacuum cleaner, ESD soft brush, and diagonal pliers 2.2 Spare Part Preparations This section describes the spare parts required for BSC6900 site maintenance. These spare parts must be placed in the equipment room or at nearby places for easy access. Spare Parts Selection Criteria The principles for preparing the BSC6900 spare parts are as follows: l l 2-2 When a board that works in independent mode is faulty, the board fault disrupts the services carried on the board. Therefore, the priority to prepare a spare board for a board of this type is high. When a board that works in resource pool mode is faulty, the board fault does not disrupt the services, but only deteriorates the performance of the system in certain aspects. Therefore, the priority to prepare a spare board for a board of this type is medium. Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. Issue 05 (2011-05-19)
  • 19. BSC6900 GSM Site Maintenance Guide 2 Site Maintenance Preparations l The filler panel is used for cabinet encapsulation and ventilation. It also ensures the electromagnetic shielding and neatness of the cabinet. Therefore, the priority to prepare a spare filler panel is medium. l When a board that works in active/standby mode is faulty, the board fault does not affect the services because the system automatically switches over the active and standby boards. Therefore, the priority to prepare a spare board for a board of this type is low. Recommended Spare Parts List Table 2-2 describes the recommended BSC6900 spare parts. Table 2-2 Recommended BSC6900 spare parts Spare Part Quantity Fan box One for each site Filler panel Two for each site Power distribution box One for each site Board One spare SCUa, DPUc, XPUa/XPUb, GCUa/GCGa, OMUa/OMUb, and TNUa board for each site One spare DPUa, DPUd, EIUa, OIUa, POUc, PEUa, FG2a/FG2c, and GOUa/GOUc board for each site if these boards are configured Optical module One spare optical module for each site if the optical module is configured NOTE The site operator can also apply for a site-specific quantity of spare parts according to its unique requirement. Issue 05 (2011-05-19) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. 2-3
  • 20. BSC6900 GSM Site Maintenance Guide 3 3 Routine Hardware Maintenance Items Routine Hardware Maintenance Items About This Chapter This chapter describes the routine hardware maintenance items of the BSC6900. Different items require different maintenance methods. 3.1 Equipment Room Maintenance Items This section describes the maintenance items in the BSC6900 equipment room. The items include the ambience alarm, anti-theft device, door and window, temperature, humidity, indoor air conditioner, and dustproof condition. 3.2 Maintaining the Power Supply and Grounding Systems This section describes the maintenance items of the BSC6900 power supply and the grounding system. The maintenance items consist of power cables, voltage, PGND cables, components inside the cabinet, earth resistance, batteries, and rectifier. 3.3 Cabinet Maintenance Items This section describes the maintenance items of the BSC6900 cabinet. The maintenance items consist of fans, air filters, cabinet surface, locks and doors of cabinet, cabinet cleanliness, fan box cleanliness, ESD wrist strap, cabinet components, and idle optical ports on boards. 3.4 Cable Maintenance Items This section describes the cable maintenance items. The maintenance items consist of cable labels, connectors and sockets, connection of E1/T1 cables, connection of Ethernet cables, and connection of optical cables. Issue 05 (2011-05-19) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. 3-1
  • 21. BSC6900 GSM Site Maintenance Guide 3 Routine Hardware Maintenance Items 3.1 Equipment Room Maintenance Items This section describes the maintenance items in the BSC6900 equipment room. The items include the ambience alarm, anti-theft device, door and window, temperature, humidity, indoor air conditioner, and dustproof condition. Table 3-1 lists the maintenance items of the equipment room. Table 3-1 Maintenance items of the equipment room Item Interval Operation Guide Reference Standard Alarms on equipment room environment Daily Check whether power supply alarms, fire alarms, or smoke alarms are generated. No power supply alarms, fire alarms, or smoke alarms are reported. Check anti-theft nets, equipment room doors, and windows Weekly Check whether the anti-theft nets, doors, and windows are intact. The anti-theft device, door, and window are in good condition. Check room temperature Daily Check the temperature indicator in the equipment room. The temperature is between 15°C and 30° C. Check room humidity Daily Check the humidity indicator in the equipment room. The humidity is between 40% and 65%. Check indoor air conditioner Weekly Check the running status of the air conditioner. The air conditioner works properly. The temperature set on the air conditioner is consistent with that on the thermometer. Check dustproof condition Weekly Check the equipment shell, equipment interior, floor, and desktop. The cabinet surface is clean, and the cabinet interior is dustfree. 3.2 Maintaining the Power Supply and Grounding Systems This section describes the maintenance items of the BSC6900 power supply and the grounding system. The maintenance items consist of power cables, voltage, PGND cables, components inside the cabinet, earth resistance, batteries, and rectifier. Table 3-2 lists the maintenance items of the power supply and grounding systems. 3-2 Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. Issue 05 (2011-05-19)
  • 22. BSC6900 GSM Site Maintenance Guide 3 Routine Hardware Maintenance Items Table 3-2 Maintenance items of the power supply and grounding systems Item Interval Operation Guide Reference Standard Power cables Monthly or quarterly Check all the power cables between the power supply system and the power distribution box of the cabinet. l The power cables are not aged. l The PGND cables are securely connected. The connection points are not corroded. Voltage Monthly or quarterly Measure the voltage of the power supply using a multimeter. The voltage of the power supply is within the standard voltage range. For details, refer to Technical Specifications of the Cabinet. PGND cables Monthly or quarterly Check all the PGND cables and grounding bars. l The PGND cables are not aged. l The PGND cables are securely connected. The connection points are not corroded. l The grounding bars are not corroded. Proper anticorrosion measures are taken. Components inside the cabinet Monthly or quarterly Check the connection terminals and captive screws of all the PGND cables. l The PGND cables are not aged. l The PGND cables are securely connected. The connection points are not corroded. l The connection terminals and captive screws are securely and correctly connected, and they are not corroded. Earth resistance Issue 05 (2011-05-19) Monthly or quarterly Use an electric earth resistance tester to measure the earth resistance and keep a record. Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. The grounding resistance is less than 10 ohms. 3-3
  • 23. BSC6900 GSM Site Maintenance Guide 3 Routine Hardware Maintenance Items Item Interval Operation Guide Reference Standard Batteries and rectifier Yearly Check the batteries and rectifier of the power supply system in each equipment room. l The batteries are normal. There is no battery leakage, swelling, or corrosion. l The capacity of all batteries meets the standard requirements and the batteries are correctly connected. l The rectifier meets the required specifications. 3.3 Cabinet Maintenance Items This section describes the maintenance items of the BSC6900 cabinet. The maintenance items consist of fans, air filters, cabinet surface, locks and doors of cabinet, cabinet cleanliness, fan box cleanliness, ESD wrist strap, cabinet components, and idle optical ports on boards. Table 3-3 lists the maintenance items of the BSC6900 cabinet. Table 3-3 BSC6900 cabinet maintenance items Item Interval Operation Guide Reference Standard Fans Weekly or monthly Check the running state of the fans. The fan works properly without making abnormal sounds. Air filters Check the air filters of each cabinet. Cabinet surface Monthly or quarterly Check the cabinet surface and the cabinet labels. The cabinet surface is intact. The labels are legible. Locks and doors Monthly or quarterly Check whether the lock is normal and the door can be opened and closed easily. The locks and the doors of the cabinet work properly. Cleanness of the cabinets 3-4 Quarterly The air filters are dust-free and damage-free. Clean the dirty air filter according to 6 Cleaning and Replacing the Air Filters. Replace the damaged air filter according to 6.4 Replacing the Air Filters. Monthly or quarterly Check whether the cabinet is clean. The cabinet surface is clean. The interior of the cabinet is dust-free. Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. Issue 05 (2011-05-19)
  • 24. BSC6900 GSM Site Maintenance Guide 3 Routine Hardware Maintenance Items Item Interval Operation Guide Reference Standard Cleanness of the fan box Yearly Clean the fan box according to 5 Cleaning the Fan Box. The surface of the fan box is clean. The interior of the fan box is dust-free. Check the LEDs of every component inside the cabinet. The LEDs work properly. For details on the LEDs, refer to the following part: Front Panel of the HighPower Power Distribution Box, Fan Box (Configured with the PFCU Board), Fan Box (Configured with the PFCB Board), 9 LEDs on the Boards. Inside of the cabinet Monthly or quarterly Measure the grounding resistance of the ESD wrist strap as follows: ESD wrist strap Quarterly l Use an ESD wrist strap tester to test the ESD wrist strap. l Use a multimeter. Protection of the idle optical ports on boards Monthly or quarterly Check the dustproof caps on the idle optical ports. l When you use an ESD wrist strap tester, the GOOD LED on it is ON. l When you use a multimeter, the grounding resistance of the ESD wrist strap ranges from 0.8 megohm to 1.2 megohms. The dustproof caps are on the idle optical ports. 3.4 Cable Maintenance Items This section describes the cable maintenance items. The maintenance items consist of cable labels, connectors and sockets, connection of E1/T1 cables, connection of Ethernet cables, and connection of optical cables. Table 3-4 describes the cable maintenance items. Table 3-4 Cable maintenance items Item Operation Guide Reference Standard Check connectors and sockets Issue 05 (2011-05-19) Interval Monthly or quarterly Check the insulators of the connectors or the sockets. The insulators of the connectors or the sockets are clean. Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. 3-5
  • 25. BSC6900 GSM Site Maintenance Guide 3 Routine Hardware Maintenance Items Item Interval Operation Guide Reference Standard l The E1/T1 cables are properly connected. E1/T1 cable connections Yearly Check the connections of the E1/T1 cables. l The E1/T1 cables are intact. l The labels on the cables are legible. l The Ethernet cables are properly connected. Ethernet cable connections Yearly Check the connections of the Ethernet cables. l The Ethernet cables are intact. l The labels on the cables are legible. l The optical cables are properly connected. Optical cable connections Yearly Check the connections of the optical cables. l The optical cables are intact. l The labels on the cables are legible. 3-6 Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. Issue 05 (2011-05-19)
  • 26. BSC6900 GSM Site Maintenance Guide 4 Powering On/Off the BSC6900 4 Powering On/Off the BSC6900 About This Chapter This chapter describes how to power on and power off the BSC6900. The following is described: the distribution of the power switches, powering on the BSC6900 cabinet, powering off the BSC6900 cabinet in a normal situation, and powering off the BSC6900 cabinet in case of emergencies. 4.1 Distribution of Power Switches on the Common Power Distribution Box This section describes the mapping between the six routes of power outputs from the power distribution box of the BSC6900 cabinet and the components in the BSC6900 cabinet. 4.2 Distribution of Power Switches on the High-Power PDB The power distribution box of the MPR/EPR/TCR provides 20 (10 x 2) routes of power outputs. This section describes the mapping between the eight routes of power outputs from the power distribution box of the MPR/EPR/TCR and the components in the cabinet. 4.3 Powering On the Cabinet This section describes how to power on the BSC6900 cabinet and how to handle common power failures in the components of the cabinet. 4.4 Powering Off the Cabinet in a Normal Situation This section describes how to power off the BSC6900 cabinet in a normal situation. You must power off the BSC6900 cabinet before relocating the equipment or before a forecasted territorial power blackout. Powering off the BSC6900 cabinet disrupts all the ongoing services. Therefore, power off the BSC6900 cabinet only when required. 4.5 Powering Off the Cabinet in Emergency Cases This section describes how to power off the BSC6900 cabinet in emergency cases. To ensure the security of the BSC6900 cabinet, the BSC6900 cabinet must be powered off in emergency cases, such as fire, smoke, or water immersion. Issue 05 (2011-05-19) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. 4-1
  • 27. BSC6900 GSM Site Maintenance Guide 4 Powering On/Off the BSC6900 4.1 Distribution of Power Switches on the Common Power Distribution Box This section describes the mapping between the six routes of power outputs from the power distribution box of the BSC6900 cabinet and the components in the BSC6900 cabinet. Distribution of Power Switches on the Power Distribution Box of the MPR (Configured with OMU Board)/EPR/TCR When the MPR is configured with the OMU board, the distribution of power switches on the power distribution box of the MPR is the same as the distribution of power switches on the power distribution box of the EPR/TCR. Figure 4-1 shows the mapping between the six power switches on the power distribution box and the components in the MPR (configured with OMU board)/ EPR/TCR. Table 4-1 presents the mapping between the six power switches and the components in the MPR (configured with OMU board)/EPR/TCR. Figure 4-1 Mapping between the power switches and the components in the MPR (configured with OMU board)/EPR/TCR Table 4-1 Mapping between the power switches and the components in the MPR (configured with OMU board)/EPR/TCR Component Subrack 2 SW1, SW4 Subrack 1 4-2 Power Switch on the Power Distribution Box SW2, SW5 Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. Issue 05 (2011-05-19)
  • 28. BSC6900 GSM Site Maintenance Guide 4 Powering On/Off the BSC6900 Component Power Switch on the Power Distribution Box Subrack 0 SW3, SW6 Distribution of Power Switches on the Power Distribution Box of the MPR (Configured with GBAM) Figure 4-2 shows the mapping between the six power switches on the power distribution box and the components in the MPR that is configured with GBAM. Table 4-2 presents the mapping between the six power switches on the power distribution box and the components in the MPR that is configured with GBAM. Figure 4-2 Mapping between the power switches and the components in the MPR (configured with GBAM) Table 4-2 Mapping between the power switches and the components in the MPR (configured with GBAM) Component Subrack 1 SW1, SW4 Subrack 0 SW2, SW5 KVM SW3 LAN switch Issue 05 (2011-05-19) Power Switch on the Power Distribution Box SW3 Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. 4-3
  • 29. BSC6900 GSM Site Maintenance Guide 4 Powering On/Off the BSC6900 Component Power Switch on the Power Distribution Box GBAM SW3, SW6 4.2 Distribution of Power Switches on the High-Power PDB The power distribution box of the MPR/EPR/TCR provides 20 (10 x 2) routes of power outputs. This section describes the mapping between the eight routes of power outputs from the power distribution box of the MPR/EPR/TCR and the components in the cabinet. The power distribution box of the MPR/EPR/TCR provides eight routes of power outputs in two groups (group A and group B), which are controlled by switches A7 to A10 and B7 to B10 respectively. Figure 4-3 shows the mapping between the power switches on the power distribution box and the components in the MPR/EPR/TCR. Table 4-3 lists the mapping between the power switches and the components. Figure 4-3 Distribution of power switches on the power distribution box of the MPR/EPR/TCR Table 4-3 Mapping between the power switches and the components in the MPR/EPR/TCR Component Subrack 2 A8, B8 Subrack 1 A9, B9 Subrack 0 4-4 Power Switch on the Power Distribution Box A10, B10 Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. Issue 05 (2011-05-19)
  • 30. BSC6900 GSM Site Maintenance Guide 4 Powering On/Off the BSC6900 Component Power Switch on the Power Distribution Box Independent fan subrack A7, B7 4.3 Powering On the Cabinet This section describes how to power on the BSC6900 cabinet and how to handle common power failures in the components of the cabinet. Prerequisite l The surface of the input power cables is not damaged. The input power cables are correctly and securely connected. l The green and yellow PGND cable for the cabinet is properly connected. l The power switches SW1 to SW6 (or A1 to A10 and B1 to B10) on the power distribution box are set to OFF. CAUTION Ensure that the Checking and Setting the Subrack DIP Switch operation is performed before the cabinet is powered on. After the cabinet is powered on, any modification to the setting of a DIP switch on a subrack does not take effect. Procedure Step 1 Set the power switches that control the BSC power supply on the power distribution frame (PDF) to ON. Step 2 Set the power switches on the power distribution box to ON after the RUN LED on the front panel of the power distribution box blinks every alternate 0.25s. If the cabinet is... Then... MPR, Set the corresponding power switches on the power distribution box to ON. Then, go to Step 3. EPR/TCR, Set the power switches that correspond to the subracks configured in the same cabinet to ON. Then, go to Step 4. Step 3 Set the power switch on the front panel of the GBAM and the power switch on the rear panel of the KVM to ON if the GBAM is configured. Step 4 Check the power supply to the cabinet components, as listed in Table 4-4. Issue 05 (2011-05-19) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. 4-5
  • 31. BSC6900 GSM Site Maintenance Guide 4 Powering On/Off the BSC6900 Table 4-4 Checklist for the power supply to the cabinet components Component Normal LED Status Board The green RUN LED on the board panel blinks every alternate second. Fan box The green LED on the panel of the fan box blinks every alternate second after the subrack/independent fan subrack is powered on. Power distribution monitor board The green RUN LED on the board panel blinks every alternate second. GBAM The main power LED on the front panel is on. LAN switch The POWER LED on the front panel is on. KVM The POWER LED on the keyboard is on. Step 5 Power on the cabinet and then check the power supply to the components in the cabinet. Clear the power failures, if any, according to Table 4-5. Table 4-5 Handling power failures in the components in the cabinet Failure Type Handling Measures Power failure in all the internal parts of the cabinet Check whether the -48 V power cables and the RTN power cables are properly connected. l If the cable connection is wrong, set all the power switches on the power distribution box to OFF, and then reconnect the power cables. CAUTION Set the power switches that control the BSC power supply on the PDF to OFF before reconnecting the power cables. l If the cable connection is correct, replace the Overvoltage Protection Board (WOPB). If the failure persists, replace the power distribution box. Power failure in all the boards in a subrack Use a multimeter to measure the input voltage of the subrack l If the input voltage is between -40 V and -57 V, replace the subrack. l If the input voltage is not between -40 V and -57 V, check the connections of the power cables. If the connections of the power cables are loose, set the power switch on the power distribution box corresponding to the subrack to OFF and then reconnect the power cables. Otherwise, replace the power distribution box because the power switch on it may be faulty. 4-6 Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. Issue 05 (2011-05-19)
  • 32. BSC6900 GSM Site Maintenance Guide 4 Powering On/Off the BSC6900 Failure Type Handling Measures Power failure in a certain board in a subrack Perform the following operations: 1. Check whether the board is securely connected. If the board is not securely connected, reinstall the board. Observe the LEDs on the board panel. For details about the states of the LEDs on the board panel, see 9 LEDs on the Boards. 2. Remove the board, and check whether there is any distorted pin, broken pin, or or if any pin is missing on the board socket. Replace the subrack if there is a distorted pin, broken pin, or if a pin is missing. 3. Reinstall the board, and observe the LEDs on the board panel. For details about the states of the LEDs on the board panel, see 9 LEDs on the Boards. 4. If the LEDs indicate that the board does not work normally, remove the board and install it into an idle slot that is for a board of the same type. Then, observe the LEDs on the board panel. l If the board works normally, it indicates that the slot is faulty. In this case, replace the subrack. l If the board does not work normally, it indicates that the board is faulty. In this case, replace the board. Power failure in the GBAM Use a multimeter to measure the input voltage of the GBAM. l If the input voltage is between -40 V and -57 V, replace the power modules of the GBAM. l If the input voltage is not between -40 V and -57 V, check the connections of the power cables. If the connections of the power cables are loose, set the power switch on the power distribution box corresponding to the GBAM to OFF and then reconnect the power cables. Otherwise, replace the power distribution box because the power switch on it may be faulty. Power failure in any other part in the cabinet Use a multimeter to measure the input voltage of the faulty component. l If the input voltage is between -40 V and -57 V, replace the component. l If the input voltage is not between -40 V and -57 V, check the connections of the power cables. If the connections of the power cables are loose, set the power switch on the power distribution box corresponding to the component to OFF and then reconnect the power cables. Otherwise, replace the power distribution box because the power switch on it may be faulty. ----End Issue 05 (2011-05-19) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. 4-7
  • 33. BSC6900 GSM Site Maintenance Guide 4 Powering On/Off the BSC6900 4.4 Powering Off the Cabinet in a Normal Situation This section describes how to power off the BSC6900 cabinet in a normal situation. You must power off the BSC6900 cabinet before relocating the equipment or before a forecasted territorial power blackout. Powering off the BSC6900 cabinet disrupts all the ongoing services. Therefore, power off the BSC6900 cabinet only when required. Prerequisite l The green and yellow PGND cable for the cabinet is properly connected. l The data on the BSC6900 is backed up. Back up the system data by referring to . Context To minimize the adverse impact on the BSC6900, power off the EPR/TCR before you power off the MPR. Procedure l In the case that the external GBAM is configured 1. Run the Telnet client, such as PuTTY, on the LMT PC. Enter the IP address of the external GBAM and then log in to the GBAM as user root. 2. Run the poweroff command to shut down the external GBAM. 3. Set the power switch on the front panel of the external GBAM to OFF. 4. Set power switches SW1 to SW6 on the power distribution box of the EPR/TCR to OFF. 5. If multiple EPR/TCRs are configured, repeat Step 4 to power off all the EPRs/TCRs. CAUTION If only a few EPRs/TCRs are powered off, data inconsistency may occur. 6. 7. Set power switches SW1 to SW6 on the power distribution box of the MPR to OFF. 8. l Turn off the power switch on the rear panel of the KVM. Set the power switches that control the BSC6900 power supply on the PDF to OFF. In the case that the OMU board is configured 1. Set the power switches corresponding to the subracks configured in the EPR. That is, set the power switches A7 to A10 and B7 to B10 on the power distribution box to OFF in sequence. 2. Flip open the ejector levers of the OMU board. NOTE Repeat this step if two OMU boards are configured. After you flip open the upper and lower ejector levers, the OMU board automatically shuts down the operating system and hard disks. The OFFLINE LED on the board is on, which indicates that the board is powered off. 4-8 Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. Issue 05 (2011-05-19)
  • 34. BSC6900 GSM Site Maintenance Guide 4 Powering On/Off the BSC6900 3. After the OFFLINE LED on the OMU board is ON, set the power switches A7 to A10 and B7 to B10 on the power distribution box to OFF in sequence. 4. Flip the ejector levers of the OMU board inwards until they are in position. 5. Set the power switches that control the BSC power supply on the PDF to OFF. ----End 4.5 Powering Off the Cabinet in Emergency Cases This section describes how to power off the BSC6900 cabinet in emergency cases. To ensure the security of the BSC6900 cabinet, the BSC6900 cabinet must be powered off in emergency cases, such as fire, smoke, or water immersion. Procedure Step 1 Set all the switches on the power distribution box of the BSC6900 cabinet to OFF. Step 2 If time permits, set the switches that control the power supply to the BSC6900 on the PDF to OFF. ----End Issue 05 (2011-05-19) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. 4-9
  • 35. BSC6900 GSM Site Maintenance Guide 5 Cleaning the Fan Box 5 Cleaning the Fan Box This chapter describes how to clean a fan box. To ensure stability and reliability of the equipment, the maintenance personnel should clean each fan box (including the fan boxes in the service subracks and the fan boxes in the independent fan subrack) regularly, preferably once every year. Prerequisite l The tools are ready. They are the ESD wrist strap, clean cotton cloth, ESD soft brush, vacuum cleaner, and Phillips screwdriver. l A clean backup fan box is ready for use. Context CAUTION l To protect the components from electrostatic discharge, wear an ESD wrist strap properly. Ensure that the ESD wrist strap is properly connected to the ESD connector on the cabinet. If no ESD wrist strap or no proper grounding point is available, wear ESD gloves. l Cleaning the fan box severely affects heat dissipation; therefore, you should replace the fan box in less than one minute. Otherwise, the boards may be damaged due to high temperature. Procedure Step 1 Clean the backup fan box by using a clean cotton cloth, an ESD soft brush, and a vacuum cleaner. Step 2 Use a Phillips screwdriver to open the front door of the cabinet and loosen the two captive screws on the fan box. Step 3 Remove the fan box from the cabinet. Issue 05 (2011-05-19) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. 5-1
  • 36. BSC6900 GSM Site Maintenance Guide 5 Cleaning the Fan Box DANGER When replacing the fan box, do not put your hand inside the fan box. Otherwise, the revolving fan blade may injure your fingers. Step 4 Install the backup fan box into the cabinet and then fasten the captive screws to secure the fan box. Step 5 Clean the removed fan box with a clean cotton cloth, an ESD soft brush, and a vacuum cleaner. After being cleaned, the fan box is reserved as a backup for future use. Step 6 Repeat Step 2 through Step 5 to replace other fan boxes. ----End 5-2 Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. Issue 05 (2011-05-19)
  • 37. BSC6900 GSM Site Maintenance Guide 6 6 Cleaning and Replacing the Air Filters Cleaning and Replacing the Air Filters About This Chapter This chapter describes how to clean and replace an air filter. The air filter protects the boards and the BSC6900 from dust. If an air filter is damaged, you must replace it with a new one in time. 6.1 Position of the Air Filters This section describes the position of the air filters in the BSC6900 cabinet. The air filters are installed on the inner side of the front and back doors and at the bottom of the cabinet. 6.2 Cleaning the Air Filter at the Bottom of the N68E-22 Cabinet This section describes how to clean the air filter at the bottom of the N68E-22 cabinet. The maintenance personnel should clean the air filter at the bottom of each cabinet regularly, preferably once every quarter. 6.3 Cleaning the Air Filter on the Inner Side of the Cabinet Door This section describes how to clean the air filter on the inner side of the cabinet door. The maintenance personnel should clean the air filters regularly, preferably once every quarter. 6.4 Replacing the Air Filters This section describes how to replace a worn-out BSC6900 air filter. It takes about five minutes to replace an air filter. Issue 05 (2011-05-19) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. 6-1
  • 38. 6 Cleaning and Replacing the Air Filters BSC6900 GSM Site Maintenance Guide 6.1 Position of the Air Filters This section describes the position of the air filters in the BSC6900 cabinet. The air filters are installed on the inner side of the front and back doors and at the bottom of the cabinet. Figure 6-1 shows the position of the air filters in the single-door N68E-22 cabinet. Figure 6-2 shows the position of the air filters in the double-door N68E-22 cabinet. Figure 6-1 Air filters in the single-door N68E-22 cabinet 6-2 Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. Issue 05 (2011-05-19)
  • 39. BSC6900 GSM Site Maintenance Guide 6 Cleaning and Replacing the Air Filters Figure 6-2 Air filters in the double-door N68E-22 cabinet NOTE The air filter at the bottom of the cabinet is white, and fixed on the rack with screws. The other filters are black, and fixed on the cabinet with binding strips. 6.2 Cleaning the Air Filter at the Bottom of the N68E-22 Cabinet This section describes how to clean the air filter at the bottom of the N68E-22 cabinet. The maintenance personnel should clean the air filter at the bottom of each cabinet regularly, preferably once every quarter. Issue 05 (2011-05-19) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. 6-3
  • 40. 6 Cleaning and Replacing the Air Filters BSC6900 GSM Site Maintenance Guide Prerequisite The tools are ready. They are the ESD wrist strap, Phillips screwdriver, and dry cleaning cloth. Context CAUTION To protect the components from electrostatic discharge, wear an ESD wrist strap properly. Ensure that the ESD wrist strap is properly connected to the ESD connector on the cabinet. If no ESD wrist strap or no proper grounding point is available, wear ESD gloves. Procedure Step 1 Open the front door of the cabinet and then remove the two screws from the air filter with a Phillips screwdriver, as shown in Figure 6-3. Figure 6-3 Removing the air filter from the bottom of the cabinet Step 2 Hold the panel of the air filter frame with both hands and lift the frame slightly to raise the panel higher than the screws fixing the grounding cables at the bottom of the cabinet. Then, pull the frame out of the cabinet slowly and completely. Step 3 Clean the air filter with water and wipe it up with dry cloth. Then, dry the air filter in a ventilated place. 6-4 Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. Issue 05 (2011-05-19)
  • 41. BSC6900 GSM Site Maintenance Guide 6 Cleaning and Replacing the Air Filters CAUTION Do not place a wet air filter in the cabinet. The equipment may be damaged due to the short circuit when the water is absorbed by the cabinet. Step 4 Insert the clean air filter carefully along the guide rails into the cabinet. Do not push it forcibly. Step 5 After the air filter is in position, fix the two screws on the air filter frame with a Phillips screwdriver, as shown in Figure 6-4. Figure 6-4 Installing the air filter at the bottom of the cabinet ----End 6.3 Cleaning the Air Filter on the Inner Side of the Cabinet Door This section describes how to clean the air filter on the inner side of the cabinet door. The maintenance personnel should clean the air filters regularly, preferably once every quarter. Prerequisite l Issue 05 (2011-05-19) The tools are ready. They are the ESD wrist strap and cotton cloth that is dry and clean. Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. 6-5
  • 42. 6 Cleaning and Replacing the Air Filters BSC6900 GSM Site Maintenance Guide Context CAUTION To protect the components from electrostatic discharge, wear an ESD wrist strap properly. Ensure that the ESD wrist strap is properly connected to the ESD connector on the cabinet. If no ESD wrist strap or no proper grounding point is available, wear ESD gloves. Procedure Step 1 Open the door of the cabinet and strip off the black air filter from the inside of the door. Step 2 Clean the air filter with water, and then dry the air filter in a ventilated place or by using a water extractor. CAUTION Do not place a wet air filter in the cabinet. The equipment may be damaged due to the short circuit when the water is absorbed by the cabinet. Step 3 Clean the inside metal surface of the door with the clean cotton cloth. Step 4 Stick the clean air filter along the edges of the inside of the door. CAUTION The air filters must be tightly stuck to the binding strips to avoid falling off. If the binding strips fail to work, replace them with new ones. ----End 6.4 Replacing the Air Filters This section describes how to replace a worn-out BSC6900 air filter. It takes about five minutes to replace an air filter. Prerequisite l l 6-6 The tools are ready. The tools are the ESD wrist strip and Phillips screwdriver. A new air filters for the BSC6900 are ready. Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. Issue 05 (2011-05-19)
  • 43. BSC6900 GSM Site Maintenance Guide 6 Cleaning and Replacing the Air Filters Context CAUTION To protect the components from electrostatic discharge, wear an ESD wrist strap properly. Ensure that the ESD wrist strap is properly connected to the ESD connector on the cabinet. If no ESD wrist strap or no proper grounding point is available, wear ESD gloves. Procedure Step 1 Remove the air filter from the cabinet. If... Then... The air filter is installed at the bottom of the cabinet, Loosen the retention screws with the Phillips screwdriver and then remove the air filter. The air filter is installed on the inner side Remove the air filter. of the front door or the back door, Step 2 Install the new air filter. If... Then... The air filter needs to be installed at the bottom of the N68E-22 cabinet, Install the air filter in the original position and fasten the screws with the Phillips screwdriver. The air filter needs to be installed on the inner side of the front door or the back door, Stick the black air filter along the edges of the inner side of the door. Place the black air filter along the edges of the inner side of the door. Ensure that the edges of the air filter are tightly attached to the black binding strips to prevent it from falling off. ----End Follow-up Procedure Dispose of the replaced air filter properly to prevent environmental pollution. Issue 05 (2011-05-19) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. 6-7
  • 44. BSC6900 GSM Site Maintenance Guide 7 Replacing Boards and Modules 7 Replacing Boards and Modules About This Chapter This chapter describes how to replace boards and modules in the BSC6900 cabinet, which involves replacing the boards and modules, acknowledging a successful replacement, and handling of the faulty boards. Each section provides an estimated time for the replacement of the board as a reference. 7.1 Strategy on Replacing Legacy Components in an Upgrade Scenario This section describes the legacy components that can be used by the BSC6900 after an upgrade. It also describes the strategy on how to replace the faulty legacy components. 7.2 Procedure for Replacing a Board This section describes the procedure for replacing a BSC6900 board. 7.3 Replacing a DPUa/DPUc/DPUd/DPUf Board This section describes how to replace a faulty DPUa/DPUc/DPUd/DPUf board. The DPUa/ DPUc/DPUd/DPUf board is hot-swappable. It takes about two minutes to replace the board. 7.4 Replacing an EIUa Board This section describes how to replace a faulty EIUa board. The EIUa board is hot-swappable. It takes about eight minutes to replace an EIUa board. 7.5 Replacing an FG2a Board This section describes how to replace a faulty FG2a board. The FG2a board is hot swappable. It takes about five minutes to replace the board. 7.6 Replacing an FG2c Board This section describes how to replace a faulty FG2c board. The FG2c board is hot-swappable. It takes about five minutes to replace the board. 7.7 Replacing a GCUa/GCGa Board This section describes how to replace a faulty GCUa/GCGa board. The GCUa/GCGa board is hot-swappable. It takes about five minutes to replace the board. 7.8 Replacing a GOUa Board This section describes how to replace a faulty GOUa board. The GOUa board is hot-swappable. It takes about five minutes to replace the board. 7.9 Replacing a GOUc Board Issue 05 (2011-05-19) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. 7-1
  • 45. BSC6900 GSM Site Maintenance Guide 7 Replacing Boards and Modules This section describes how to replace a faulty GOUc board. The GOUc board is hot-swappable. It takes about five minutes to replace the board. 7.10 Replacing an MDMC Board This section describes how to replace a faulty MDMC board. The MDMC board is hotswappable. It takes about ten minutes to replace the board. 7.11 Replacing an OIUa Board This section describes how to replace a faulty OIUa board. The OIUa board is hot-swappable. It takes about five minutes to replace the board. 7.12 Replacing an OMU Board This section describes how to replace a faulty OMU board. The OMU board is hot-swappable. It takes about 16 minutes to replace an OMU board. 7.13 Replacing an SCUa Board This section describes how to replace a faulty SCUa board. The SCUa board is hot-swappable. It takes about four minutes to replace the board. 7.14 Replacing a TNUa Board This section describes how to replace a faulty TNUa board. The TNUa board is hot-swappable. It takes about four minutes to replace the board. 7.15 Replacing an XPUa Board This section describes how to replace a faulty XPUa board. The XPUa board is hot-swappable. It takes about six minutes to replace and load a board. 7.16 Replacing an XPUb Board This section describes how to replace a faulty XPUb board. The XPUb board is hot-swappable. It takes about six minutes to replace and load a board. 7.17 Replacing a WOPB Board This section describes how to replace a faulty WOPB board. The WOPB board is hot-swappable. It takes about ten minutes to replace the board. 7.18 Replacing a Subrack This section describes how to replace a faulty BSC6900 subrack. It takes about 60 minutes to replace a subrack. 7.19 Replacing the Independent Fan Subrack When the independent fan subrack in the BSC6900 is faulty, the independent fan subrack must be replaced. It takes about 15 minutes to replace an independent fan subrack. 7.20 Replacing the Power Distribution Box This section describes how to replace a faulty power distribution box. It takes about 25 minutes to replace a power distribution box. 7.21 Replacing the Fan Box When a fan box in the service subrack or in the independent fan subrack is faulty, the fan box must be replaced. You should finish the replacement of the fan box in less than one minute. 7.22 Replacing the Pluggable Optical Module This section describes how to replace a pluggable optical module when the module is faulty. 7.23 Replacing an Optical Splitter/Combiner This section describes how to replace an optical splitter/combiner. The BSC6900 optical splitters/combiners are LC/LC-LC single-mode optical splitter/combiner and LC/LC-LC multimode optical splitter/combiner. It takes about five minutes to replace an optical splitter/ combiner. 7-2 Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. Issue 05 (2011-05-19)
  • 46. BSC6900 GSM Site Maintenance Guide 7 Replacing Boards and Modules 7.24 Replacing the KVM This section describes how to replace a faulty KVM. It takes about 10 minutes to replace a KVM. 7.25 Replacing the LAN Switch This section describes how to replace a faulty LAN switch. It takes about 10 minutes to replace a LAN switch. 7.26 Replacing the GBAM This section describes how to replace a faulty GBAM. It takes about 40 minutes to replace a GBAM. There are three models of GBAM, namely, IBM X3650T, C5210, and HP CC3310. Issue 05 (2011-05-19) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. 7-3
  • 47. BSC6900 GSM Site Maintenance Guide 7 Replacing Boards and Modules 7.1 Strategy on Replacing Legacy Components in an Upgrade Scenario This section describes the legacy components that can be used by the BSC6900 after an upgrade. It also describes the strategy on how to replace the faulty legacy components. Table 7-1 describes the strategy on how to replace the faulty legacy components of the BSC6900. Table 7-1 Strategy on replacing faulty legacy components of the BSC6900 Legacy Component With Spare Part Without Spare Part OMUb board Replace the faulty OMUb board with the spare OMUb board. For details, see 7.12 Replacing an OMU Board. Replace the faulty OMUb board with the spare OMUa board. For details on how to replace an OMUb board with an OMUa board, see 7.12 Replacing an OMU Board. DPUa board Replace the faulty DPUa board with the spare DPUa board. For details, see 7.3 Replacing a DPUa/DPUc/ DPUd/DPUf Board. Replace the faulty DPUa board with the spare DPUc board. For details on how to replace a DPUa board with a DPUc board, see 7.3 Replacing a DPUa/DPUc/ DPUd/DPUf Board. GBAM/LAN switch Replace the faulty GBAM/ LAN switch with the spare GBAM/LAN switch. For details, see 7.26 Replacing the GBAM and 7.25 Replacing the LAN Switch. Replace the faulty GBAM with the spare OMUa board. For details on how to replace the GBAM with an OMUa board, see 7.26 Replacing the GBAM. Common power distribution box Replace the faulty power distribution box with the spare power distribution box. For details, see 7.20 Replacing the Power Distribution Box. Contact Huawei engineers. 7.2 Procedure for Replacing a Board This section describes the procedure for replacing a BSC6900 board. 7.2.1 Removing a Board This section describes how to remove a BSC6900 board. 7.2.2 Inserting a Board 7-4 Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. Issue 05 (2011-05-19)
  • 48. BSC6900 GSM Site Maintenance Guide 7 Replacing Boards and Modules This section describes how to insert a BSC6900 board into the subrack. 7.2.1 Removing a Board This section describes how to remove a BSC6900 board. Prerequisite The tools are ready, including the ESD wrist strap, Phillips screwdriver, ESD box or bag, dustfree cotton cloth, and fiber cleaner. Context All the boards in the BSC6900 cabinet, except the OMUa board, are hot-swappable. For other principles of removing a board, see Precautions on Board Operation. CAUTION l The OMUa board can be hot-swappable only after the operating system is shut down. l To protect the components from electrostatic discharge, wear an ESD wrist strap properly. Ensure that the ESD wrist strap is properly connected to the ESD connector on the cabinet. If no ESD wrist strap or no proper grounding point is available, wear ESD gloves. Procedure l Removing a board(configuring the new ejector levers) 1. Issue 05 (2011-05-19) Loosen the fastening screws on the board panel counterclockwise. Ensure that the screws are fully detached from the subrack, as shown in parts A of Figure 7-1 Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. 7-5
  • 49. BSC6900 GSM Site Maintenance Guide 7 Replacing Boards and Modules Figure 7-1 Removing a board(configuring the new ejector levers) 2. Press and hold the two locking buttons and turn the ejector levers on the board panels, as shown in part B of Figure 7-1. The board is detached from the backplane, as shown in part C of Figure 7-1. 3. Hold the two ejector levers and pull the board along the guide rails, as shown in part C of Figure 7-1. CAUTION Pull the board steadily without shaking the board to avoid damaging the pins on the backplane or the board connector. 4. 5. 7-6 Pull the board out of the subrack by pulling the upper ejector lever on the front panel with one hand and holding the bottom of the board by the other. Put the removed board in an ESD case or bag. Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. Issue 05 (2011-05-19)
  • 50. BSC6900 GSM Site Maintenance Guide 7 Replacing Boards and Modules CAUTION While removing a board, do not touch the PCB or any other devices except for jumpers and DIP switches. l Removing a board(configuring the old ejector levers) 1. Loosen the fastening screws on the board panel counterclockwise. Ensure that the screws are fully detached from the subrack, as shown in parts A of Figure 7-2. Figure 7-2 Removing a board(configuring the old ejector levers) 2. Press the self-locking spring on the two ejector levers on the board panel, and at the same time, turn the two ejector levers outwards, as shown in part B of Figure 7-2. The board is detached from the backplane, as shown in part C of Figure 7-2. 3. Hold the two ejector levers and pull the board along the guide rails, as shown in part C of Figure 7-2. CAUTION Pull the board steadily without shaking the board to avoid damaging the pins on the backplane or the board connector. 4. 5. Issue 05 (2011-05-19) Pull the board out of the subrack by pulling the upper ejector lever on the front panel with one hand and holding the bottom of the board by the other. Put the removed board in an ESD case or bag. Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. 7-7
  • 51. BSC6900 GSM Site Maintenance Guide 7 Replacing Boards and Modules CAUTION While removing a board, do not touch the PCB or any other devices except for jumpers and DIP switches. ----End 7.2.2 Inserting a Board This section describes how to insert a BSC6900 board into the subrack. Prerequisite l The tools are ready, including the ESD wrist strap, Phillips screwdriver, and ESD box or bag. l A new board is ready and the DIP switches are correctly set. Context CAUTION l You are required to wear an ESD Wrist Strap and plug the ESD wrist strap into the ESD connector of the cabinet before inserting a board. l While inserting a board, do not touch the PCB or any other devices except the jumpers and DIP switches with your bare hands. For other principles of installing a BSC6900 board, see Precautions on Board Operation. Procedure l Inserting a Board (configuring the new ejector levers) 1. 2. 7-8 Take the new board out of the ESD box. Then, check the pins and the sockets of the board. If there is any missing or broken pin, any bent ping or socket, contact Huawei engineers for replacement. Press and hold the two locking buttons and turn the ejector levers on the board panels, as shown in parts A of Figure 7-3. Turn the ejector lever into the position, as shown in part B of Figure 7-3. Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. Issue 05 (2011-05-19)
  • 52. BSC6900 GSM Site Maintenance Guide 7 Replacing Boards and Modules Figure 7-3 Installing a BSC6900 board(configuring the new ejector levers) 3. Hold the panel with one hand and the lower edge of the board with the other hand, and then push the board into the subrack along the guide rails until the ejector levers are half closed. CAUTION Push in the board slowly and steadily to avoid damage to the pins on the backplane and the metal piece on the board. 4. Lower the ejector levers of the OMU board until they are in position, as shown in part C of Figure 7-3. 5. Secure the screws on the OMU board, as shown in part D of Figure 7-3. NOTE You need to push the screws inwards to secure the screws into the holes on the subrack. l Inserting a Board (configuring the old ejector levers) 1. Take the new board out of the ESD box. Then, check the pins and the sockets of the board. If there is any missing or broken pin, any bent ping or socket, contact Huawei engineers for replacement. 2. Issue 05 (2011-05-19) Press the latch and turn the ejector lever outwards, as shown in parts A of Figure 7-4. Turn the ejector lever into the position, as shown in part B of Figure 7-4. Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. 7-9
  • 53. BSC6900 GSM Site Maintenance Guide 7 Replacing Boards and Modules Figure 7-4 Installing a BSC6900 board(configuring the old ejector levers) 3. Hold the panel with one hand and the lower edge of the board with the other hand, and then push the board into the subrack along the guide rails until the ejector levers are half closed. CAUTION Push in the board slowly and steadily to avoid damage to the pins on the backplane and the metal piece on the board. 4. Lower the ejector levers of the OMU board until they are in position, as shown in part C of Figure 7-4. 5. Secure the screws on the OMU board, as shown in part D of or Figure 7-4. NOTE You need to push the screws inwards to secure the screws into the holes on the subrack. ----End 7.3 Replacing a DPUa/DPUc/DPUd/DPUf Board This section describes how to replace a faulty DPUa/DPUc/DPUd/DPUf board. The DPUa/ DPUc/DPUd/DPUf board is hot-swappable. It takes about two minutes to replace the board. 7-10 Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. Issue 05 (2011-05-19)
  • 54. BSC6900 GSM Site Maintenance Guide 7 Replacing Boards and Modules Prerequisite l The tools are ready. The tools are the ESD wrist strap, Phillips screwdriver, and ESD box or bag. l A new DPUa/DPUc/DPUd/DPUf board is ready. l The LMT is started and communicates with the OMU properly. Context CAUTION l To avoid damage to the boards, ASIC chips, or other electronic components, wear an ESD wrist strap properly. Ensure that the ESD wrist strap is properly connected to the ESD connector on the cabinet. If no ESD wrist strap or no proper grounding point is available, wear ESD gloves. l It is recommended that you use a board of the same type to replace the board. To use a board of the different version to replace the board (for example, the board of version a replace the board of version b), contact Huawei for technical support. CAUTION Replacing the DPUa/DPUc/DPUd/DPUf board disrupts all the services carried on the board. Procedure Step 1 Run the LST SUBRACK command to query the inhibited status of the board. If... Then... Logical inhibited board or Physical Go to Step 2. inhibited board includes the DPUa/ DPUc/DPUd/DPUf board to be replaced. Logical inhibited board or Physical inhibited board does not include the DPUa/DPUc/DPUd/DPUf board to be replaced. 1. Run the INH BRD command to physically inhibit the board. 2. Go to Step 2. NOTE Physically inhibiting the DPUa/DPUc/DPUd/DPUf board prevents new accesses from the board and reduces the impact of replacing the board on the BSC6900 operation. Step 2 Remove the DPUa/DPUc/DPUd/DPUf board to be replaced by referring to 7.2.1 Removing a Board. Step 3 Insert the new board into the subrack by referring to 7.2.2 Inserting a Board. Issue 05 (2011-05-19) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. 7-11
  • 55. BSC6900 GSM Site Maintenance Guide 7 Replacing Boards and Modules The new board automatically loads program and configuration data, and the RUN LED blinks every alternate 0.125s. Step 4 Run the UIN BRD command to unblock the new board. Step 5 Run the DSP BRD command to query the status of the new board. If... Then... CPU status is Active normal, Go to Step 7. CPU status is not Active normal, Go to Step 6. Step 6 Check whether a board failure alarm is reported on the LMT. If... Then... Alarms caused by a faulty board are reported, 1. Identify and rectify the fault according to the alarm information. 2. Go to Step 5. No alarms caused by the faulty board are Go to Step 7. reported, Step 7 Run the CMP BRDVER command to check whether the software version of the new board is consistent with the board version matching table. If... Then... The board version is consistent with the board version matching table, Go to Step 8. The board version is inconsistent with the 1. Ensure that the program files of the board in the OMU active workspace installationbin board version matching table, fam on the OMU are correct. If the program files are incorrect, contact Huawei engineers. 2. Run the RST BRD command to reset the board. 3. Go to Step 5. NOTE You can obtain the correct board version matching table from the version matching documents. Step 8 Test the CS services by dialing and the PS services by browsing web pages to ensure that the new board is functional. ----End 7-12 Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. Issue 05 (2011-05-19)
  • 56. BSC6900 GSM Site Maintenance Guide 7 Replacing Boards and Modules Follow-up Procedure Record the name and the bar code of the replaced board. Check whether there are obvious physical damages, such as the distorted pin, broken pin, or burnt board. If there is any damage, fill in the BSC6900 site maintenance record and pack the replaced board. When packing a board, pay attention to the following points: l Wear an ESD wrist strap or a pair of ESD gloves. l Ensure that each ESD bag or case holds only one board. l When packing multiple boards, isolate them with ESD materials. Contact the local Huawei office to dispose of the replaced board. NOTE You may obtain the name and the PCB version from the panel or bottom of the faulty board. 7.4 Replacing an EIUa Board This section describes how to replace a faulty EIUa board. The EIUa board is hot-swappable. It takes about eight minutes to replace an EIUa board. Prerequisite l The tools are ready. The tools are the ESD wrist strap, Phillips screwdriver, flat-head screwdriver, and ESD box or bag. l A new EIUa board is ready. l The LMT is started and communicates with the OMU properly. Context CAUTION l To avoid damage to the boards, ASIC chips, or other electronic components, wear an ESD wrist strap properly. Ensure that the ESD wrist strap is properly connected to the ESD connector on the cabinet. If no ESD wrist strap or no proper grounding point is available, wear ESD gloves. l It is recommended that you use a board of the same type to replace the board. To use a board of the different version to replace the board (for example, the board of version a replace the board of version b), contact Huawei for technical support. CAUTION l Replacing the standby EIUa has no adverse impact on the system. Replacing the EIUa board that works independently, however, disrupts services carried on this board. l If the BSC6900 and its peer equipment are connected through only the EIUa board, the ongoing services between the BSC6900 and its peer equipment are disrupted when you replace the EIUa board. Issue 05 (2011-05-19) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. 7-13
  • 57. BSC6900 GSM Site Maintenance Guide 7 Replacing Boards and Modules Procedure Step 1 Run the LST SUBRACK command to query the backup status of the EIUa board to be replaced. If... Then... Backup type is Backup, Go to Step 2. Backup type is No backup, Go to Step 3. NOTE If two BSC6900 boards work in backup mode, the boards must be installed in an even-numbered slot and in the slot numbered with that value plus 1. For example, if the board that is installed in slot 14 does not work in backup mode, the board that is installed in slot 15 does not work in backup mode either. Step 2 Run the DSP BRD command to query the status of the board to be replaced. If... Then... CPU status is Active normal, 1. Run the SWP BRD command to switch the board over to standby status. 2. Go to Step 3. CAUTION A forced active/standby switchover may affect the running of the system. Therefore, run this command when the traffic is light, for instance, at midnight. The parameter is of any other values, Go to Step 3. Step 3 Check whether the labels on the E1/T1 cable and clock cable (if configured) connected to the EIUa are legible. If the labels are illegible, attach a new label to the cables to avoid improper connection after the board is replaced. Step 4 Disconnect the clock cable. Loosen the captive screws from the E1/T1 cable connector with a flat-head screwdriver and disconnect the E1/T1 cable. Step 5 Remove the board to be replaced by referring to 7.2.1 Removing a Board. Step 6 Check whether the settings of the 10.2 DIP Switches on the EIUa Board of the standby board are correct. If... Then... The settings are correct, Go to Step 7. The settings are incorrect, 1. Set the DIP switches correctly. 2. Go to Step 7. Step 7 Install the new board into the subrack by referring to 7.2.2 Inserting a Board. 7-14 Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. Issue 05 (2011-05-19)
  • 58. BSC6900 GSM Site Maintenance Guide 7 Replacing Boards and Modules The new board automatically loads program and configuration data, and the RUN LED blinks every other 0.125s. Step 8 Install the cables for the board. If... Then... The E1/T1 cables are connected to the board, Insert the E1/T1 connector into the socket on the board, and use a Phillips screwdriver to tighten the screws on the E1/T1 connector. The 75-ohm clock cables are connected to Insert the clock cables. the board, Step 9 If the RUN LED blinks every other second, run DSP BRD to query the status of the new board. If... Then... CPU status is Active normal or Standby normal, Go to Step 11. The parameter is of any other values, Go to Step 10. Step 10 Check whether a board failure alarm is reported on the BSC6900 LMT. If... Then... Alarms caused by a faulty board are reported, 1. Locate and rectify the fault according to the alarm help information. 2. Go to Step 9. No alarms caused by the faulty board are Go to Step 11. reported, Step 11 Run the CMP BRDVER command to check whether the software version of the new board is consistent with the board version matching table. If... Then... The board version is consistent with the board version matching table, Go to Step 12. The board version is inconsistent with the 1. Ensure that the program files of the board in the OMU active workspace installationbin board version matching table, fam on the OMUa are correct. If the program files are incorrect, contact Huawei engineers. 2. Run RST BRD to reset the board. 3. Go to Step 9. Issue 05 (2011-05-19) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. 7-15
  • 59. BSC6900 GSM Site Maintenance Guide 7 Replacing Boards and Modules NOTE You can obtain the correct board version matching table from the version matching documents. Step 12 Verify this board is functioning correctly by testing the CS services with dialing and PS services with web browsing. ----End Follow-up Procedure Record the name and the bar code of the replaced board. Check whether there are obvious physical damages, such as the distorted pin, broken pin, or burnt board. If there is any damage, fill in the BSC6900 site maintenance record and pack the replaced board. When packing a board, pay attention to the following points: l Wear an ESD wrist strap or a pair of ESD gloves. l Ensure that each ESD bag or case holds only one board. l When packing multiple boards, isolate them with ESD materials. Contact the local Huawei office to dispose of the replaced board. NOTE You may obtain the name and the PCB version from the panel or bottom of the faulty board. 7.5 Replacing an FG2a Board This section describes how to replace a faulty FG2a board. The FG2a board is hot swappable. It takes about five minutes to replace the board. Prerequisite l The tools are ready. The tools are the ESD wrist strap, Phillips screwdriver, flat-head screwdriver, and ESD box or bag. l A new FG2a board is ready. l The LMT is started and communicates with the OMU properly. Context CAUTION l To avoid damage to the boards, ASIC chips, or other electronic components, wear an ESD wrist strap properly. Ensure that the ESD wrist strap is properly connected to the ESD connector on the cabinet. If no ESD wrist strap or no proper grounding point is available, wear ESD gloves. l It is recommended that you use a board of the same type to replace the board. To use a board of the different version to replace the board (for example, the board of version a replace the board of version b), contact Huawei for technical support. 7-16 Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. Issue 05 (2011-05-19)
  • 60. BSC6900 GSM Site Maintenance Guide 7 Replacing Boards and Modules CAUTION l If the FG2a board is standby and the data over the port on the FG2a board are backed up, replacing the standby FG2a board has no adverse effect on the system. l When the FG2a boards work in board backup mode and the ports work in load sharing mode, replacing the standby FG2a board disrupts part of services if the traffic over the ports exceeds the bandwidth of the ports on the active board. When the FG2a boards work in board backup mode with independent ports, replacing the standby FG2a board disrupts all the services carried on the standby board. l Replacing an FG2a board that works independently disrupts all the services on the board. l If the BSC6900 and its peer equipment are connected through only the FG2a board, the ongoing services between the BSC6900 and its peer equipment are disrupted when you replace the FG2a board. Procedure Step 1 Run the LST SUBRACK command to query the backup status of the FG2a board to be replaced. If... Then... Backup type is Backup, Go to Step 2. Backup type is No backup, Go to Step 4. NOTE If two BSC6900 boards work in backup mode, the boards must be installed in an even-numbered slot and in the slot numbered with that value plus 1. For example, if the board that is installed in slot 14 does not work in backup mode, the board that is installed in slot 15 does not work in backup mode either. Step 2 Run the DSP BRD command to query the status of the FG2a board to be replaced. If... Then... CPU status is Active normal, 1. Run the SWP BRD command to switch the board over to standby status. 2. Go to Step 3. CAUTION A forced active/standby switchover may affect the running of the system. Therefore, run this command when the traffic is light, for instance, at midnight. The parameter is of any other values, Go to Step 3. Step 3 Run the DSP ETHPORT command to query the backup status of all the ports on the FG2a board to be replaced. Issue 05 (2011-05-19) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. 7-17
  • 61. BSC6900 GSM Site Maintenance Guide 7 Replacing Boards and Modules If... Then... The ports are standby, Go to Step 4. The ports are active, 1. Run the SWP ETHPORT command to switch the active port to standby status. 2. Go to Step 4. Step 4 Check whether the labels on the Ethernet cable connected to the FG2a board are legible. If the labels are illegible, attach a new label to the Ethernet cable to avoid improper connection after replacing the board. Step 5 Disconnect the Ethernet cable from the replaced board. Step 6 Remove the board to be replaced by referring to 7.2.1 Removing a Board. Step 7 Install the new board into the subrack by referring to 7.2.2 Inserting a Board. The new board automatically loads program and configuration data, and the RUN LED blinks every other 0.125s. Step 8 Install the Ethernet cables by referring to the labels. Step 9 If the RUN LED blinks every other second, run DSP BRD to query the status of the new board. If... Then... CPU status is Active normal or Standby normal, Go to Step 11. The parameter is of any other values, Go to Step 10. Step 10 Check whether a board failure alarm is reported on the BSC6900 LMT. If... Then... Alarms caused by a faulty board are reported, 1. Locate and rectify the fault according to the alarm help information. 2. Go to Step 9. No alarms caused by the faulty board are Go to Step 11. reported, Step 11 Run the CMP BRDVER command to check whether the software version of the new board is consistent with the board version matching table. If... The board version is consistent with the board version matching table, 7-18 Then... Go to Step 12. Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. Issue 05 (2011-05-19)
  • 62. BSC6900 GSM Site Maintenance Guide 7 Replacing Boards and Modules If... Then... The board version is inconsistent with the 1. Ensure that the program files of the board in the OMU active workspace installationbin board version matching table, fam on the OMUa are correct. If the program files are incorrect, contact Huawei engineers. 2. Run RST BRD to reset the board. 3. Go to Step 9. NOTE You can obtain the correct board version matching table from the version matching documents. Step 12 Verify this board is functioning correctly by testing the CS services with dialing and PS services with web browsing. ----End Follow-up Procedure Record the name and the bar code of the replaced board. Check whether there are obvious physical damages, such as the distorted pin, broken pin, or burnt board. If there is any damage, fill in the BSC6900 site maintenance record and pack the replaced board. When packing a board, pay attention to the following points: l Wear an ESD wrist strap or a pair of ESD gloves. l Ensure that each ESD bag or case holds only one board. l When packing multiple boards, isolate them with ESD materials. Contact the local Huawei office to dispose of the replaced board. NOTE You may obtain the name and the PCB version from the panel or bottom of the faulty board. 7.6 Replacing an FG2c Board This section describes how to replace a faulty FG2c board. The FG2c board is hot-swappable. It takes about five minutes to replace the board. Prerequisite l The tools are ready. The tools are the ESD wrist strap, Phillips screwdriver, flat-head screwdriver, and ESD box or bag. l A new FG2c board is ready. l The LMT is started and communicates with the OMU properly. Issue 05 (2011-05-19) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. 7-19
  • 63. BSC6900 GSM Site Maintenance Guide 7 Replacing Boards and Modules Context CAUTION l To avoid damage to the boards, ASIC chips, or other electronic components, wear an ESD wrist strap properly. Ensure that the ESD wrist strap is properly connected to the ESD connector on the cabinet. If no ESD wrist strap or no proper grounding point is available, wear ESD gloves. l It is recommended that you use a board of the same type to replace the board. To use a board of the different version to replace the board (for example, the board of version a replace the board of version b), contact Huawei for technical support. CAUTION l If the FG2c board is standby and the ports on the FG2c board are backed up, replacing the standby FG2c board has no adverse effect on the system. l When the FG2c boards work in backup mode and the ports work in load sharing mode, replacing the standby FG2c board disrupts part of services if the total traffic over the ports exceeds the bandwidth of the ports on the active board. When the FG2c boards work in backup mode with independent ports, replacing the standby FG2c board disrupts all the services carried on the standby board. l Replacing an FG2c board that works independently disrupts all the services on the board. l If the BSC6900 and its peer equipment are connected through only the FG2c board, the ongoing services between the BSC6900 and its peer equipment are disrupted when you replace the FG2c board. Procedure Step 1 Run the LST SUBRACK command to query the backup status of the FG2c board to be replaced. If... Then... Backup type is Backup, Go to Step 2. Backup type is No backup, Go to Step 4. NOTE If two BSC6900 boards work in backup mode, the boards must be installed in an even-numbered slot and in the slot numbered with that value plus 1. For example, if the board that is installed in slot 14 does not work in backup mode, the board that is installed in slot 15 does not work in backup mode either. Step 2 Run the DSP BRD command to query the status of the FG2c board to be replaced. 7-20 Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. Issue 05 (2011-05-19)
  • 64. BSC6900 GSM Site Maintenance Guide 7 Replacing Boards and Modules If... Then... CPU status is Active normal, 1. Run the SWP BRD command to switch the board to standby status. 2. Go to Step 3. CAUTION A forced active/standby switchover may affect the running of the system. Therefore, run this command in low traffic hours, for instance, at midnight. The parameter is of any other values, Go to Step 3. Step 3 Run the DSP ETHPORT command to query the backup status of all the ports on the FG2c board to be replaced. If... Then... The ports are standby, Go to Step 4. The ports are active, 1. Run the SWP ETHPORT command to switch the active port to standby status. 2. Go to Step 4. Step 4 Check whether the labels on the Ethernet cable connected to the FG2c board are legible. If the labels are illegible, attach a new label to the Ethernet cable to avoid improper connection after replacing the board. Step 5 Disconnect the Ethernet cable from the replaced board. Step 6 Remove the board to be replaced by referring to 7.2.1 Removing a Board. Step 7 Install the new board into the subrack by referring to 7.2.2 Inserting a Board. The new board automatically loads program and configuration data, and the RUN LED blinks every other 0.125s. Step 8 Install the Ethernet cables by referring to the labels. Step 9 If the RUN LED blinks every other second, run the DSP BRD command to query the status of the new board. If... Then... CPU status is Active normal or Standby normal, Go to Step 11. The parameter is of any other values, Go to Step 10. Step 10 Check whether a board failure alarm is reported on the LMT. Issue 05 (2011-05-19) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. 7-21
  • 65. BSC6900 GSM Site Maintenance Guide 7 Replacing Boards and Modules If... Then... Alarms caused by a faulty board are reported, 1. Locate and rectify the fault according to the alarm help information. 2. Go to Step 9. No alarms caused by the faulty board are Go to Step 11. reported, Step 11 Run the CMP BRDVER command to check whether the software version of the new board is consistent with the board version matching table. If... Then... The board version is consistent with the board version matching table, Go to Step 12. The board version is inconsistent with the 1. Ensure that the program files of the board in the OMU active workspace installationbin board version matching table, fam on the OMUa board are correct. If the program files are incorrect, contact Huawei engineers. 2. Run the RST BRD command to reset the board. 3. Go to Step 9. NOTE You can obtain the correct board version matching table from the version matching documents. Step 12 Verify this board is functioning correctly by testing the CS services with dialing and PS services with web browsing. ----End Follow-up Procedure Record the name and the bar code of the replaced board. Check whether there are obvious physical damages, such as the distorted pin, broken pin, or burnt board. If there is any damage, fill in the BSC6900 site maintenance record and pack the replaced board. When packing a board, pay attention to the following points: l Wear an ESD wrist strap or a pair of ESD gloves. l Ensure that each ESD bag or case holds only one board. l When packing multiple boards, isolate them with ESD materials. Contact the local Huawei office to dispose of the replaced board. NOTE You may obtain the name and the PCB version from the panel or bottom of the faulty board. 7-22 Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. Issue 05 (2011-05-19)
  • 66. BSC6900 GSM Site Maintenance Guide 7 Replacing Boards and Modules 7.7 Replacing a GCUa/GCGa Board This section describes how to replace a faulty GCUa/GCGa board. The GCUa/GCGa board is hot-swappable. It takes about five minutes to replace the board. Prerequisite l The tools are ready. The tools are the ESD wrist strap, Phillips screwdriver, flat-head screwdriver, and ESD box or bag. l A new GCUa/GCGa board is ready. l The LMT is started and communicates with the OMU properly. Context CAUTION l To avoid damage to the boards, ASIC chips, or other electronic components, wear an ESD wrist strap properly. Ensure that the ESD wrist strap is properly connected to the ESD connector on the cabinet. If no ESD wrist strap or no proper grounding point is available, wear ESD gloves. l It is recommended that you use a board of the same type to replace the board. To use a board of the different version to replace the board (for example, the board of version a replace the board of version b), contact Huawei for technical support. CAUTION Replacing the standby GCUa/GCGa board has no adverse impact on the services in the system. Replacing the GCUa/GCGa board that works independently, however, disrupts services carried in the BSC6900. Procedure Step 1 Display the MPS in the Device Panel on the LMT. Check the configuration of the GCUa/GCGa board. If... Then... Slots 12 and 13 are configured with the GCUa/GCGa boards, Go to Step 2. Slot 12 or 13 is configured with the GCUa/GCGa board, Go to Step 3. Step 2 Run the DSP BRD command to query the status of the board. Issue 05 (2011-05-19) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. 7-23
  • 67. BSC6900 GSM Site Maintenance Guide 7 Replacing Boards and Modules If... Then... CPU status is Active normal, 1. Run the SWP BRD command to switch the board over to standby status. 2. Go to Step 3. CAUTION A forced active/standby switchover may affect the running of the system. Therefore, run this command when the traffic is light, for instance, at midnight. The parameter is of any other values, Go to Step 3. Step 3 Check whether the labels on the cables connected to the GCUa/GCGa board are legible. If the labels are illegible, attach a new label to the cables to avoid improper connection after the board is replaced. Step 4 Disconnect the cables from the faulty board. Step 5 Remove the GCUa/GCGa board to be replaced by referring to 7.2.1 Removing a Board. Step 6 Install the new board into the subrack by referring to 7.2.2 Inserting a Board. The new board automatically loads program and configuration data, and the RUN LED blinks every other 0.125s. Step 7 Install the cables by referring to the labels. Step 8 If the RUN LED blinks every other second, run DSP BRD to query the status of the new board. If... Then... If the CPU status of only one GCUa/GCGa board is Active normal, Go to Step 10. If the CPU status of two GCUa/GCGa boards is Standby normal, Go to Step 10. The parameter is of any other values, Go to Step 9. Step 9 Check whether a board failure alarm is reported on the BSC6900 LMT. If... Then... Alarms caused by a faulty board are reported, 1. Locate and rectify the fault according to the alarm help information. 2. Go to Step 8. No alarms caused by the faulty board are Go to Step 10. reported, Step 10 Run the CMP BRDVER command to check whether the software version of the new board is consistent with the board version matching table. 7-24 Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. Issue 05 (2011-05-19)
  • 68. BSC6900 GSM Site Maintenance Guide 7 Replacing Boards and Modules If... Then... The board version is consistent with the board version matching table, Go to Step 11. The board version is inconsistent with the 1. Ensure that the program files of the board in the OMU active workspace installationbin board version matching table, fam on the OMUa are correct. If the program files are incorrect, contact Huawei engineers. 2. Run RST BRD to reset the board. 3. Go to Step 8. NOTE You can obtain the correct board version matching table from the version matching documents. Step 11 Run the DSP CLK command to query the clock status of the SCUa board in the MPS. If... Then... If the clock status of the SCUa board is Normal, The replacement is complete. If the clock status of the SCUa board is Abnormal, Go to Step 8. ----End Follow-up Procedure Record the name and the bar code of the replaced board. Check whether there are obvious physical damages, such as the distorted pin, broken pin, or burnt board. If there is any damage, fill in the BSC6900 site maintenance record and pack the replaced board. When packing a board, pay attention to the following points: l Wear an ESD wrist strap or a pair of ESD gloves. l Ensure that each ESD bag or case holds only one board. l When packing multiple boards, isolate them with ESD materials. Contact the local Huawei office to dispose of the replaced board. NOTE You may obtain the name and the PCB version from the panel or bottom of the faulty board. 7.8 Replacing a GOUa Board This section describes how to replace a faulty GOUa board. The GOUa board is hot-swappable. It takes about five minutes to replace the board. Issue 05 (2011-05-19) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. 7-25
  • 69. BSC6900 GSM Site Maintenance Guide 7 Replacing Boards and Modules Prerequisite l The tools are ready. The tools are the ESD wrist strap, Phillips screwdriver, flat-head screwdriver, ESD box or bag, dustfree cotton cloth, and fiber cleaner. l A new GOUa board is ready. l The LMT is started and communicates with the OMU properly. Context CAUTION l To avoid damage to the boards, ASIC chips, or other electronic components, wear an ESD wrist strap properly. Ensure that the ESD wrist strap is properly connected to the ESD connector on the cabinet. If no ESD wrist strap or no proper grounding point is available, wear ESD gloves. l It is recommended that you use a board of the same type to replace the board. To use a board of the different version to replace the board (for example, the board of version a replace the board of version b), contact Huawei for technical support. CAUTION l If the GOUa board is standby and the data over the port on the GOUa board are backed up, replacing the standby GOUa board has no adverse effect on the system. l When the GOUa boards work in board backup mode and the ports work in load sharing mode, replacing the standby GOUa board disrupts part of services if the total traffic over the ports exceeds the bandwidth of the ports on the active board. When the GOUa boards work in board backup mode with independent ports, replacing the standby GOUa board disrupts all the services carried on the standby board. l Replacing a GOUa board that works independently disrupts the services on that board. l If the BSC6900 and its peer equipment are connected through only the GOUa board, the ongoing services between the BSC6900 and its peer equipment are disrupted when you replace the GOUa board. Procedure Step 1 Run the LST SUBRACK command to query the backup status of the GOUa board to be replaced. If... Backup type is Backup, Go to Step 2. Backup type is No backup, 7-26 Then... Go to Step 4. Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. Issue 05 (2011-05-19)
  • 70. BSC6900 GSM Site Maintenance Guide 7 Replacing Boards and Modules NOTE If two BSC6900 boards work in backup mode, the boards must be installed in an even-numbered slot and in the slot numbered with that value plus 1. For example, if the board that is installed in slot 14 does not work in backup mode, the board that is installed in slot 15 does not work in backup mode either. Step 2 Run the DSP BRD command to query the status of the GOUa board to be replaced. If... Then... CPU status is Active normal, 1. Run the SWP BRD command to switch the board over to standby status. 2. Go to Step 3. CAUTION A forced active/standby switchover may affect the running of the system. Therefore, run this command when the traffic is light, for instance, at midnight. The parameter is of any other values, Go to Step 3. Step 3 Run the DSP ETHPORT command to query the backup status of all the ports on the GOUa board to be replaced. If... Then... The ports are standby, Go to Step 4. The ports are active, 1. Run the SWP ETHPORT command to switch the active port to standby status. 2. Go to Step 4. Step 4 Check whether the labels on the optical cable connected to the GOUa are legible. If the labels are illegible, attach a new label to the cable to avoid improper connection after the board is replaced. Step 5 Remove the optical cables and cap the connectors. If the connectors are dirty, clean them with the dustfree cotton cloth or the fiber cleaner. Step 6 Remove the board by referring to 7.2.1 Removing a Board and cap the optical ports. Step 7 Install the new board into the subrack by referring to 7.2.2 Inserting a Board. The new board automatically loads program and configuration data, and the RUN LED blinks every other 0.125s. Step 8 Remove the caps from optical ports and connectors, and reserve them for later use. Then, install the optical cables by referring to the labels. Step 9 If the RUN LED blinks every other second, run DSP BRD to query the status of the new board. If... Then... CPU status is Active normal or Standby normal, Go to Step 11. Issue 05 (2011-05-19) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. 7-27
  • 71. BSC6900 GSM Site Maintenance Guide 7 Replacing Boards and Modules If... Then... The CPU is in another status, Go to Step 10. Step 10 Check whether a board failure alarm is reported on the BSC6900 LMT. If... Then... Alarms caused by a faulty board are reported, 1. Locate and rectify the fault according to the alarm help information. 2. Go to Step 9. No alarms caused by the faulty board are Go to Step 11. reported, Step 11 Run the CMP BRDVER command to check whether the software version of the new board is consistent with the board version matching table. If... Then... The board version is consistent with the board version matching table, Go to Step 12. The board version is inconsistent with the 1. Ensure that the program files of the board in the OMU active workspace installationbin board version matching table, fam on the OMUa are correct. If the program files are incorrect, contact Huawei engineers. 2. Run RST BRD to reset the board. 3. Go to Step 9. NOTE You can obtain the correct board version matching table from the version matching documents. Step 12 Verify this board is functioning correctly by testing the CS services with dialing and PS services with web browsing. ----End Follow-up Procedure Record the name and the bar code of the replaced board. Check whether there are obvious physical damages, such as the distorted pin, broken pin, or burnt board. If there is any damage, fill in the BSC6900 site maintenance record and pack the replaced board. When packing a board, pay attention to the following points: l l Ensure that each ESD bag or case holds only one board. l 7-28 Wear an ESD wrist strap or a pair of ESD gloves. When packing multiple boards, isolate them with ESD materials. Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. Issue 05 (2011-05-19)
  • 72. BSC6900 GSM Site Maintenance Guide 7 Replacing Boards and Modules Contact the local Huawei office to dispose of the replaced board. NOTE You may obtain the name and the PCB version from the panel or bottom of the faulty board. 7.9 Replacing a GOUc Board This section describes how to replace a faulty GOUc board. The GOUc board is hot-swappable. It takes about five minutes to replace the board. Prerequisite l The tools are ready. The tools are the ESD wrist strap, Phillips screwdriver, flat-head screwdriver, ESD box or bag, dustfree cotton cloth, and fiber cleaner. l A new GOUc board is ready. l The LMT is started and communicates with the OMU properly. Context CAUTION l To avoid damage to the boards, ASIC chips, or other electronic components, wear an ESD wrist strap properly. Ensure that the ESD wrist strap is properly connected to the ESD connector on the cabinet. If no ESD wrist strap or no proper grounding point is available, wear ESD gloves. l It is recommended that you use a board of the same type to replace the board. To use a board of the different version to replace the board (for example, the board of version a replace the board of version b), contact Huawei for technical support. CAUTION l If the GOUc board is standby and the ports on the GOUc board are backed up, replacing the standby GOUc board has no adverse effect on the system. l When the GOUc boards work in backup mode and the ports work in load sharing mode, replacing the standby GOUc board disrupts part of services if the total traffic over the ports exceeds the bandwidth of the ports on the active board. When the GOUc boards work in backup mode with independent ports, replacing the standby GOUc board disrupts all the services carried on the standby board. l Replacing a GOUc board that works independently disrupts the services on the board. l If the BSC6900 and its peer equipment are connected through only the GOUc board, the ongoing services between the BSC6900 and its peer equipment are disrupted when you replace the GOUc board. Issue 05 (2011-05-19) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. 7-29
  • 73. BSC6900 GSM Site Maintenance Guide 7 Replacing Boards and Modules Procedure Step 1 Run the LST SUBRACK command to query the backup status of the GOUc board to be replaced. If... Then... Backup type is Backup, Go to Step 2. Backup type is No backup, Go to Step 4. NOTE If two BSC6900 boards work in backup mode, the boards must be installed in an even-numbered slot and in the slot numbered with that value plus 1. For example, if the board that is installed in slot 14 does not work in backup mode, the board that is installed in slot 15 does not work in backup mode either. Step 2 Run the DSP BRD command to query the status of the GOUc board to be replaced. If... Then... CPU status is Active normal, 1. Run the SWP BRD command to switch the board to standby status. 2. Go to Step 3. CAUTION A forced active/standby switchover may affect the running of the system. Therefore, run this command in low traffic hours, for instance, at midnight. The parameter is of any other values, Go to Step 3. Step 3 Run the DSP ETHPORT command to query the backup status of all the ports on the GOUc board to be replaced. If... Then... The ports are standby, Go to Step 4. The ports are active, 1. Run the SWP ETHPORT command to switch the active port to standby status. 2. Go to Step 4. Step 4 Check whether the labels on the optical cables connected to the GOUc board are legible. If the labels are illegible, attach a new label to the cables to avoid improper connection after the board is replaced. Step 5 Remove the optical cables and cap the connectors. If the connectors are dirty, clean them with dustfree cotton cloth or fiber cleaner. Step 6 Remove the board by referring to 7.2.1 Removing a Board and cap the optical ports. Step 7 Install the new board into the subrack by referring to 7.2.2 Inserting a Board. 7-30 Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. Issue 05 (2011-05-19)
  • 74. BSC6900 GSM Site Maintenance Guide 7 Replacing Boards and Modules The new board automatically loads program and configuration data, and the RUN LED blinks every other 0.125s. Step 8 Remove the caps from optical ports and connectors, and keep them for later use. Then, install the optical cables by referring to the labels. Step 9 If the RUN LED blinks every other second, run the DSP BRD command to query the status of the new board. If... Then... CPU status is Active normal or Standby normal, Go to Step 11. The parameter is of any other values, Go to Step 10. Step 10 Check whether a board failure alarm is reported on the LMT. If... Then... Alarms caused by a faulty board are reported, 1. Locate and rectify the fault according to the alarm help information. 2. Go to Step 9. No alarms caused by the faulty board are Go to Step 11. reported, Step 11 Run the CMP BRDVER command to check whether the software version of the new board is consistent with the board version matching table. If... Then... The board version is consistent with the board version matching table, Go to Step 12. The board version is inconsistent with the 1. Ensure that the program files of the board in the OMU active workspace installationbin board version matching table, fam on the OMUa board are correct. If the program files are incorrect, contact Huawei engineers. 2. Run the RST BRD command to reset the board. 3. Go to Step 9. NOTE You can obtain the correct board version matching table from the version matching documents. Step 12 Verify this board is functioning correctly by testing the CS services with dialing and PS services with web browsing. ----End Issue 05 (2011-05-19) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. 7-31
  • 75. BSC6900 GSM Site Maintenance Guide 7 Replacing Boards and Modules Follow-up Procedure Record the name and the bar code of the replaced board. Check whether there are obvious physical damages, such as the distorted pin, broken pin, or burnt board. If there is any damage, fill in the BSC6900 site maintenance record and pack the replaced board. When packing a board, pay attention to the following points: l Wear an ESD wrist strap or a pair of ESD gloves. l Ensure that each ESD bag or case holds only one board. l When packing multiple boards, isolate them with ESD materials. Contact the local Huawei office to dispose of the replaced board. NOTE You may obtain the name and the PCB version from the panel or bottom of the faulty board. 7.10 Replacing an MDMC Board This section describes how to replace a faulty MDMC board. The MDMC board is hotswappable. It takes about ten minutes to replace the board. Prerequisite l The tools are ready. They are the ESD wrist strap, Phillips screwdriver, and ESD box or bag. l A new MDMC board is ready for use. l The LMT is started, and the connection between the LMT PC and the server is normal. Context CAUTION l You are required to Wear an ESD Wrist Strap and plug the ESD wrist strap into the ESD connector of the cabinet before replacing the board. If the ESD wrist strap is unavailable or if there is no ESD connector for the ESD wrist strap, wear ESD gloves. l During the replacement of the MDMC board, the power distribution monitor function is unavailable. Procedure Step 1 Record the state of the mute switch on the front panel of the power distribution box. For the position of the mute switch, see Panel of the MDMC Board. Step 2 Set all the bits of DIP switch S2 on the new MDMC board to ON, as shown in Figure 7-5. 7-32 Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. Issue 05 (2011-05-19)
  • 76. BSC6900 GSM Site Maintenance Guide 7 Replacing Boards and Modules Figure 7-5 Settings of DIP switch S2 on the MDMC board Step 3 Remove the captive screw on the MDMC board with a Phillips screwdriver. Step 4 Hold the handle of the MDMC board and remove the board from the power distribution box. Then, put the MDMC board into an ESD box or bag. CAUTION The MDMC board is twice as long as other boards. To avoid damaging the MDMC board during the replacement, move the board only after you have completely removed the board from the cabinet. Step 5 Insert the new MDMC board into the power distribution box along the guide rails. Step 6 Secure the captive screw on the MDMC board. Step 7 Set the mute switch on the new MDMC board according to the recorded settings. Step 8 When the RUN LED blinks every alternate 0.25s, it indicates that the new board is automatically loading the data configuration file. For details about the state of the LEDs on the board, see 10.3 DIP Switch on the MDMC Board. NOTE When the RUN LED blinks every alternate 0.25s or the ALM LED is on, you must remove the MDMC board and install the board again to ensure that the MDMC board is fully in contact with the backplane. Step 9 When the RUN LED blinks every alternate second, it indicates that the board works properly. Step 10 On the LMT, choose Alarm > Browse Alarm to check whether a board failure alarm is reported. If such an alarm is reported, identify and rectify the fault according to the alarm information. ----End Follow-up Procedure Record the name and the bar code of the replaced board. Check whether there are obvious physical damages, such as the distorted pin, broken pin, or burnt board. If there is any damage, fill in the BSC6900 site maintenance record and pack the replaced board. When packing a board, pay attention to the following points: l Issue 05 (2011-05-19) Wear an ESD wrist strap or a pair of ESD gloves. Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. 7-33
  • 77. BSC6900 GSM Site Maintenance Guide 7 Replacing Boards and Modules l Ensure that each ESD bag or case holds only one board. l When packing multiple boards, isolate them with ESD materials. Contact the local Huawei office to dispose of the replaced board. NOTE You may obtain the name and the PCB version from the panel or bottom of the faulty board. 7.11 Replacing an OIUa Board This section describes how to replace a faulty OIUa board. The OIUa board is hot-swappable. It takes about five minutes to replace the board. Prerequisite l The tools are ready. The tools are the ESD wrist strap, Phillips screwdriver, flat-head screwdriver, ESD box or bag, dustfree cotton cloth, and fiber cleaner. l A new OIUa board is ready. l The LMT is started and communicates with the OMU properly. Context CAUTION l To avoid damage to the boards, ASIC chips, or other electronic components, wear an ESD wrist strap properly. Ensure that the ESD wrist strap is properly connected to the ESD connector on the cabinet. If no ESD wrist strap or no proper grounding point is available, wear ESD gloves. l It is recommended that you use a board of the same type to replace the board. To use a board of the different version to replace the board (for example, the board of version a replace the board of version b), contact Huawei for technical support. CAUTION l Replacing the standby OIUa board has no adverse impact on the system. When no standby OIUa board is in position, replacing the board disrupts services carried on this board. l If the BSC6900 and its peer equipment are connected through only the OIUa board, the ongoing services between the BSC6900 and its peer equipment are disrupted when you replace the OIUa board. Procedure Step 1 Run the LST SUBRACK command to query the backup status of the OIUa board to be replaced. 7-34 Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. Issue 05 (2011-05-19)
  • 78. BSC6900 GSM Site Maintenance Guide 7 Replacing Boards and Modules If... Then... Backup type is Backup, Go to Step 2. Backup type is No backup, Go to Step 4. NOTE If two BSC6900 boards work in backup mode, the boards must be installed in an even-numbered slot and in the slot numbered with that value plus 1. For example, if the board that is installed in slot 14 does not work in backup mode, the board that is installed in slot 15 does not work in backup mode either. Step 2 Run the DSP BRD command to query the status of the board to be replaced. If... Then... CPU status is Normal, 1. Run the SWP BRD command to switch the board over to standby status. 2. Go to Step 3. CAUTION A forced active/standby switchover may affect the running of the system. Therefore, run this command when the traffic is light, for instance, at midnight. The parameter is of any other values, Go to Step 3. Step 3 Run the DSP OPT command to query the backup status of all the optical ports on the OIUa board to be replaced. If... Then... The optical port is standby, Go to Step 4. The optical port is active, 1. Run the SET MSPCMD command to switch the active port over to standby status. Set MSP Control Command to MS (Manual Switchover from working link to protection link). 2. Go to Step 4. Step 4 Check whether the labels on the optical cable and clock cable (if configured) connected to the OIUa are legible. If the labels are illegible, attach a new label to the cables to avoid improper connection after the board is replaced. Step 5 Remove the clock cable. Step 6 Remove the optical cable and cap the connectors. If the connectors are dirty, clean them with the dustfree cotton cloth or the fiber cleaner. Step 7 Remove the board by referring to 7.2.1 Removing a Board and cap the optical ports. Step 8 Insert the new board into the subrack by referring to 7.2.2 Inserting a Board. Issue 05 (2011-05-19) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. 7-35
  • 79. BSC6900 GSM Site Maintenance Guide 7 Replacing Boards and Modules The new board automatically loads program and configuration data, and the RUN LED blinks every other 0.125s. Step 9 Remove the caps from optical ports and connectors, and reserve them for later use. Then, install the optical cables by referring to the labels. Step 10 Install the clock cable (if configured) by referring to the labels. Step 11 If the RUN LED blinks every other second, run the DSP BRD command to query the status of the new board. If... Then... CPU status is Active normal or Standby normal, Go to Step 13. The parameter is of any other values, Go to Step 12. Step 12 Check whether a board failure alarm is reported on the BSC6900 LMT. If... Then... Alarms caused by a faulty board are reported, 1. Locate and rectify the fault according to the alarm help information. 2. Go to Step 11. No alarms caused by the faulty board are Go to Step 13. reported, Step 13 Run the CMP BRDVER command to check whether the software version of the new board is consistent with the board version matching table. If... Then... The board version is consistent with the board version matching table, Go to Step 14. The board version is inconsistent with the 1. Ensure that the program files of the board in the OMU active workspace installationbin board version matching table, fam on the OMUa are correct. If the program files are incorrect, contact Huawei engineers. 2. Run RST BRD to reset the board. 3. Go to Step 11. NOTE You can obtain the correct board version matching table from the version matching documents. Step 14 Verify this board is functioning correctly by testing the CS services with dialing and PS services with web browsing. ----End 7-36 Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. Issue 05 (2011-05-19)
  • 80. BSC6900 GSM Site Maintenance Guide 7 Replacing Boards and Modules Follow-up Procedure Record the name and the bar code of the replaced board. Check whether there are obvious physical damages, such as the distorted pin, broken pin, or burnt board. If there is any damage, fill in the BSC6900 site maintenance record and pack the replaced board. When packing a board, pay attention to the following points: l Wear an ESD wrist strap or a pair of ESD gloves. l Ensure that each ESD bag or case holds only one board. l When packing multiple boards, isolate them with ESD materials. Contact the local Huawei office to dispose of the replaced board. NOTE You may obtain the name and the PCB version from the panel or bottom of the faulty board. 7.12 Replacing an OMU Board This section describes how to replace a faulty OMU board. The OMU board is hot-swappable. It takes about 16 minutes to replace an OMU board. Prerequisite l The required tools are ready, including ESD wrist strap, Phillips screwdriver, and ESD box or bag. l The OMU operating system installation files, OMU applications, and OMU configuration data are available. The following information is the same between the new OMU board and the OMU board to be replaced: – Password for the administrator of the Linux operating system – FTP server password – Administrator password – External virtual IP address of the OMU board – Internal and external fixed IP addresses of the OMU board – Computer name of the OMU board – Operating system of the OMU board Context The situation where an OMU board is replaced is complex. Therefore, you should follow the flowchart shown in Figure 7-6 to determine which operation to perform, and then follow the procedures shown in Figure 7-7 to replace an OMU board. Issue 05 (2011-05-19) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. 7-37
  • 81. BSC6900 GSM Site Maintenance Guide 7 Replacing Boards and Modules Figure 7-6 Procedure for determining an operation 7-38 Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. Issue 05 (2011-05-19)
  • 82. BSC6900 GSM Site Maintenance Guide 7 Replacing Boards and Modules Figure 7-7 Procedures for replacing an OMU board Issue 05 (2011-05-19) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. 7-39
  • 83. BSC6900 GSM Site Maintenance Guide 7 Replacing Boards and Modules CAUTION l Procedures for replacing a pair of active and standby OMU boards are different from those for replacing an independent OMU board. l The new OMU board can use the same operating system as the replaced OMU board or use a different operating system, but operating systems of active and standby OMU boards must be the same. l You must wear an ESD wrist strap and plug the ESD wrist strap into the ESD connector on the cabinet before replacing an OMU board. Wear an ESD wrist strap by referring to Wearing an ESD Wrist Strap. Wear a pair of ESD gloves instead if there is no ESD wrist strap or there is no ESD connector for the ESD wrist strap. l Replacing the standby OMU board has no adverse impact on the system operation. Replacing an OMU board that works independently, however, will interrupt the communication between the OMU and the host boards. In addition, the system operation data will be lost. l This task uses one OMU board as an example for your reference only. If the main processing subrack (MPS) is configured with two OMU boards that must be replaced, follow the instructions in this section to replace the other OMU board. 7.12.1 Checking the OMU Information This section describes how to check information about the OMU board to be replaced. The information includes active/standby state, data synchronization state, and IP addresses. 7.12.2 Backing Up System Files This section describes how to back up system files. 7.12.3 Replacing the OMU Board This section describes how to replace the OMU board. You need to remove the OMU board before installing a new one. 7.12.4 Installing the Operating System and Loading the OMU Applications This section describes how to install the OMU operating system and load the OMU applications. 7.12.5 Verifying OMU Board Replacement This section describes how to verify OMU board replacement to ensure that the OMU board is replaced properly. 7.12.1 Checking the OMU Information This section describes how to check information about the OMU board to be replaced. The information includes active/standby state, data synchronization state, and IP addresses. Prerequisite l l 7-40 Users can perform operation and maintenance on the OMU. If the OMU board is faulty and the operation and maintenance function is unavailable, check whether the ALM-20701 OMU Failure Switchover is reported. If the alarm is reported, clear the alarm, obtain the latest backup OMU data, and then go to 7.12.2 Backing Up System Files. Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. Issue 05 (2011-05-19)
  • 84. BSC6900 GSM Site Maintenance Guide 7 Replacing Boards and Modules Procedure Step 1 Run the MML command DSP OMU to query the information on the OMU board to be replaced. Then, record the information, as shown in Table 7-2. Table 7-2 OMU information table Item Sample Computer name OMU_21 Internal fixed IP address 80.168.3.50 External fixed IP address 10.168.172.2 Backup channel IP address 192.168.3.50 Operational state Active normal Version XXXXXX External virtual IP address 10.168.192.5 External virtual mask 255.255.254.0 Data synchronization state Data synchronization is normal. Step 2 Display the subrack that holds the OMU board in the Device Panel on the LMT. Check the configuration of the OMU board. NOTE If the OMU board cannot communicate with the LMT, check the configuration of the OMU board by checking the MPS in the equipment room. If... Then... Two OMU boards are configured in the MPS, Go to Step 3. Only one OMU board is configured in the MPS, Go to 7.12.2 Backing Up System Files. Step 3 Check the active/standby state of the OMU board. If... Then... The board is in Standby normal state, Go to 7.12.2 Backing Up System Files. The board is in Active normal state, Go to Step 4. Step 4 Check the data synchronization state of the OMU board. Issue 05 (2011-05-19) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. 7-41
  • 85. BSC6900 GSM Site Maintenance Guide 7 Replacing Boards and Modules If... Then... The board is not in Data synchronization normal state, Clear alarms by referring to ALM-20701 OMU Failure Switchover and ALM-20704 OMU Data Synchronization Failure. Go to Step 5 after the alarms are cleared. The board is in Data synchronization normal state, Go to Step 5. Step 5 Run the SWP OMU command to manually switch over the active and standby OMU boards. Five minutes later, run the DSP OMU command to check that the OMU board to be replaced is in the standby state. Go to 7.12.2 Backing Up System Files. ----End 7.12.2 Backing Up System Files This section describes how to back up system files. Prerequisite l If the BSC6900 is configured with active and standby OMU boards and both of them need to be replaced, make two USB storage devices ready. l If the BSC6900 is configured with active and standby OMU boards and only the standby OMU board needs to be replaced, make one USB storage device ready. Procedure Step 1 Optional: If the new OMU board runs the Dopra Linux operating system, prepare a USB installation disk before replacing an OMU board. For details, see Preparing the USB Storage Device. 7-42 Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. Issue 05 (2011-05-19)
  • 86. BSC6900 GSM Site Maintenance Guide 7 Replacing Boards and Modules CAUTION l Prepare a USB installation disk whose operation mode is Switch. If it fails to be prepared, prepare a USB installation disk whose operation mode is Install. l Select Install OMU?, and select version package and patch package if a USB installation disk whose operation mode is Install is used. In this way, you can use the USB installation disk to install both the OMU operating system and OMU applications. l If the BSC6900 is configured with active and standby OMU boards and only the standby OMU board needs to be replaced, click OK when you a message is displayed, requesting you to confirm for which OMU the USB installation disk is prepared. Do not remove the USB storage device from the USB port when you are preparing the USB installation disk. A USB installation disk for the standby OMU is obtained after it is prepared. l If the BSC6900 is configured with active and standby OMU boards and both of the them need to be replaced, attach labels on the USB installation disks. This helps distinguish for which OMU they are prepared and determine which USB installation disk to use for installing the OMU operating system and applications. Step 2 Check whether system files need to be backed up. If... Then... Any of the following conditions is met, Go to 7.12.3 Replacing the OMU Board. l Users cannot use the opearation and maintenance function of the OMU and backup files have been obtained. l The MPS is configured with two OMU boards. l A USB installation disk whose operation mode is Switch is used for installing the operating system of the new OMU board. In other cases, Go to Step 3. Step 3 Run the MML command BKP DB with Path of Backup File and File Name set to appropriate values to back up system files to the specified directory. Step 4 Save the performance configuration file, SSL certificate file, license file, and OMU database file backed up in Step 3 to the local PC by referring to Transferring and Backing Up Files. NOTE l Save the performance configuration file in bamversion_aftpDefaultMeas. l Save the SSL certificate file in bamversion_aftpcert. l Save the license file in bamversion_aftplicense. ----End 7.12.3 Replacing the OMU Board This section describes how to replace the OMU board. You need to remove the OMU board before installing a new one. Issue 05 (2011-05-19) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. 7-43
  • 87. BSC6900 GSM Site Maintenance Guide 7 Replacing Boards and Modules Prerequisite l If the new OMU board runs the Dopra Linux operating system, ensure that a USB installation disk is prepared and inserted into any of the USB ports on the OMU board panel. l Removing an OMU board that is configured with new ejector levers Procedure 1. Shut down the operating system of the OMU board. For details, see Shutting Down the OMU. 2. Unscrew the captive screws on the OMU board counterclockwise, as shown in part A of Figure 7-8. Figure 7-8 Removing an OMU board that is configured with new ejector levers NOTE The preceding figure uses an OMUa/OMUb board as an example for your reference only. The procedure for removing an OMUc board is similar to that for removing an OMUa/OMUb board. 7-44 Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. Issue 05 (2011-05-19)
  • 88. BSC6900 GSM Site Maintenance Guide 7 Replacing Boards and Modules 3. Press and hold the two locking buttons, flip outward the ejector levers on the OMU board panel to unlock them, and rotate them outward. The OMU board is separated from the backplane, as shown in part B of Figure 7-8. 4. Remove the Ethernet cable, mouse cable, keyboard cable, and monitor cable (if configured) from the OMU board when the OFFLINE LED is on. 5. Remove the OMU board along the guide rails, as shown in part C of Figure 7-8. 6. Press and hold the two locking buttons, flip outward the ejector levers to make them separated from the spring plate, and rotate them until they cannot be rotated, as shown in part A of Figure 7-9. 7. Slide the new board along the guide rails into the subrack, as shown in part B of Figure 7-9. Figure 7-9 Installing an OMU board that is configured with new ejector levers 8. Flip inward the ejector levers of the OMU board until they are in position, as shown in part C of Figure 7-9. 9. Secure the screws on the OMU board, as shown in part D of Figure 7-9. The new board automatically loads software and configuration data, and the RUN LED blinks 0.125 second on and 0.125 second off. 10. Connect the cables by referring to the labels. Issue 05 (2011-05-19) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. 7-45
  • 89. BSC6900 GSM Site Maintenance Guide 7 Replacing Boards and Modules l Removing an OMU board that is configured with old ejector levers 1. Shut down the operating system of the OMU board. For details, see Shutting Down the OMU. 2. Unscrew the captive screws on the OMU board counterclockwise, as shown in part A of Figure 7-10. Figure 7-10 Removing an OMU board that is configured with old ejector levers 3. 4. Remove the Ethernet cable, mouse cable, keyboard cable, and monitor cable (if configured) from the OMU board when the OFFLINE LED is on. 5. Remove the OMU board along the guide rails, as shown in part C of Figure 7-10. 6. Flip outward the ejector levers of the new OMU board, as shown in part A of Figure 7-11. 7. 7-46 Flip outward the ejector levers of the OMU board, as shown in part B of Figure 7-10. Slide the new board along the guide rails into the subrack, as shown in part B of Figure 7-11. Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. Issue 05 (2011-05-19)
  • 90. BSC6900 GSM Site Maintenance Guide 7 Replacing Boards and Modules Figure 7-11 Installing an OMU board that is configured with old ejector levers 8. Flip inward the ejector levers of the OMU board until they are in position, as shown in part C of Figure 7-11. 9. Secure the screws on the OMU board, as shown in part D of Figure 7-11. The new board automatically loads software and configuration data, and the RUN LED blinks 0.125 second on and 0.125 second off. 10. Connect the cables by referring to the labels. ----End 7.12.4 Installing the Operating System and Loading the OMU Applications This section describes how to install the OMU operating system and load the OMU applications. Context l Issue 05 (2011-05-19) The BSC6000 runs the Suse Linux operating system, while the BSC6900 runs the Dopra Linux operating system. After the BSC6000 is upgraded to the BSC6900, the new BSC6900 can either retain the Suse Linux operating system or switch to the Dopra Linux operating system. Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. 7-47
  • 91. BSC6900 GSM Site Maintenance Guide 7 Replacing Boards and Modules CAUTION l If a pair of active/standby OMU boards are configured in the MPS, they must run the same operating system. Procedure l BSC6900 deployment 1. Install the Dopra Linux operating system and load the OMU applications by referring to Installing the OMU Operating System from a USB Storage Device. 2. Determine whether to restore data and activate the license file and the SSL certificate file. If... Then... The operation mode of the USB installation disk is Switch, End this task. The operation mode of the USB installation disk is Install, Go to Step 3. 3. 4. Upload the backup license file to the new OMU board and activate the license file by referring to Activating and Verifying the License. 5. l Restore the backup OMU data on the new OMU board by referring to Restoring the System Data. Upload the backup SSL certificate file to the new OMU board by referring to Transferring and Backing Up Files, and then run the MML command SET CERTFILE to activate the SSL certificate file. Upgrade of the BSC6000 to the BSC6900 1. Determine whether to switch the operating system. If... Then... The Suse Linux operating system is used, Go to Step 2. The Dopra Linux operating system is used, Install the OMU operating system and OMU applications by referring to Installing the OMU Operating System from a USB Storage Device. End this task. 2. 3. Install the OMU applications by referring to Optional: Installing the OMU Applications. 4. 7-48 Reinstall the Suse Linux operating system by referring to Re-Installing the Suse Linux Operating System. Determine whether to restore data and activate the license file and the SSL certificate file. Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. Issue 05 (2011-05-19)
  • 92. BSC6900 GSM Site Maintenance Guide 7 Replacing Boards and Modules If... Then... l The operation and maintenance function is available and a pair of active/standby OMU boards are configured, Go to 7.12.5 Verifying OMU Board Replacement . l The operation and maintenance function is available, one OMU board is configured, and a USB installation disk whose operation mode is Switch is used to install the Dopra Linux operating system on the new OMU board, In other cases, Go to Step 5. 5. Restore the backup OMU data on the new OMU board by referring to Restoring the System Data. 6. Upload the backup license file to the new OMU board and activate the license file by referring to Activating and Verifying the License. 7. Upload the backup SSL certificate file to the new OMU board by referring to Transferring and Backing Up Files, and then run the MML command SET CERTFILE to activate the SSL certificate file. ----End 7.12.5 Verifying OMU Board Replacement This section describes how to verify OMU board replacement to ensure that the OMU board is replaced properly. Procedure Step 1 Run the DSP OMU command to query the status of the new OMU board. If... Then... Two OMU boards are configured and the Operation status is Standby normal, Go to Step 3. In other cases, Go to Step 2. Step 2 On the Browse Alarm tab page on the LMT, check whether alarms such as board fault alarms are reported. Issue 05 (2011-05-19) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. 7-49
  • 93. BSC6900 GSM Site Maintenance Guide 7 Replacing Boards and Modules If... Then... Alarms such as board fault alarms are reported, 1. Find out the cause of the alarms and clear the alarms. 2. Go to 7.12.4 Installing the Operating System and Loading the OMU Applications. Alarms such as board fault alarms are not Go to Step 3. reported. Step 3 Run the DSP OMUMODULE command to view the status of the OMU processes. For details, see Querying the Operating Status of the OMU. If... Then... State is Active or Stopped, Board replacement is complete. State is Faulty, Contact Huawei for technical support. ----End Follow-up Procedure Record the name and the bar code of the replaced board. Check whether there are obvious physical damages, such as the distorted pin, broken pin, or burnt board. If there is any damage, fill in the BSC6900 site maintenance record and pack the replaced board. When packing a board, pay attention to the following points: l Wear an ESD wrist strap or a pair of ESD gloves. l Ensure that each ESD bag or case holds only one board. l When packing multiple boards, isolate them with ESD materials. Contact the local Huawei office to dispose of the replaced board. NOTE You may obtain the name and the PCB version from the panel or bottom of the faulty board. 7.13 Replacing an SCUa Board This section describes how to replace a faulty SCUa board. The SCUa board is hot-swappable. It takes about four minutes to replace the board. Prerequisite l l A new SCUa board is ready. l 7-50 The tools are ready. The tools are the ESD wrist strap, Phillips screwdriver, ESD box or bag, dustfree cotton cloth, and fiber cleaner. The LMT is started and communicates with the OMU properly. Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. Issue 05 (2011-05-19)
  • 94. BSC6900 GSM Site Maintenance Guide 7 Replacing Boards and Modules Context CAUTION l To avoid damage to the boards, ASIC chips, or other electronic components, wear an ESD wrist strap properly. Ensure that the ESD wrist strap is properly connected to the ESD connector on the cabinet. If no ESD wrist strap or no proper grounding point is available, wear ESD gloves. l It is recommended that you use a board of the same type to replace the board. To use a board of the different version to replace the board (for example, the board of version a replace the board of version b), contact Huawei for technical support. CAUTION l Replacing the standby SCUa board decreases the internal switching capacity and has no effect on the services in the system. l When no standby board is in position, replacing the SCUa board in the MPS resets all the other boards in the MPS and disrupts all the ongoing services in the subrack. l When no standby board is in position, replacing the SCUa board in the EPS/TCS resets all the other boards in the EPS/TCS and disrupts all the ongoing services in the subrack. In addition, the communication between the EPS/TCS and the MPS is disrupted. Procedure Step 1 Display the subrack that houses the SCUa board in the Device Panel on the LMT. Check the configuration of the SCUa board. If... Then... Slots 6 and 7 are configured with the SCUa boards, Go to Step 2. Slot 6 or 7 is configured with the SCUa board, Go to Step 3. Step 2 Run the DSP BRD command to query the status of the board to be replaced. If... Then... CPU status is Active normal, 1. Run SWP BRD to switch the board over to standby. 2. Go to Step 3. CAUTION A forced active/standby switchover may affect the running of the system. Therefore, run this command when the traffic is light, for instance, at midnight. Issue 05 (2011-05-19) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. 7-51
  • 95. BSC6900 GSM Site Maintenance Guide 7 Replacing Boards and Modules If... Then... The parameter is of any other values, Go to Step 3. Step 3 Check whether the labels on the cables connected to the SCUa are legible. If the labels are illegible, re-label the cables to avoid faulty connections after replacing the board. Step 4 Disconnect the cables from the faulty board. Step 5 Remove the board to be replaced by referring to 7.2.1 Removing a Board. Step 6 Insert the new board into the subrack by referring to 7.2.2 Inserting a Board. The new board automatically loads program and configuration data, and the RUN LED blinks every other 0.125s. Step 7 Install the cables by referring to the labels. Step 8 If the RUN LED blinks every other second, run DSP BRD to query the status of the new board. If... Then... Only one SCUa board is configured and the CPU status is Active normal, Go to Step 10. Two SCUa boards are configured and the CPU status is Standby normal, Go to Step 10. The parameter is of any other values, Go to Step 9. Step 9 Check whether a board failure alarm is reported on the BSC6900 LMT. If... Then... Alarms caused by a faulty board are reported, 1. Locate and rectify the fault according to the alarm help information. 2. Go to Step 8. No alarms caused by the faulty board are Go to Step 10. reported, Step 10 Run the CMP BRDVER command to check whether the software version of the new board is consistent with the board version matching table. If... The board version is consistent with the board version matching table, 7-52 Then... Go to Step 11. Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. Issue 05 (2011-05-19)
  • 96. BSC6900 GSM Site Maintenance Guide 7 Replacing Boards and Modules If... Then... The board version is inconsistent with the 1. Ensure that the program files of the board in the OMU active workspace installationbin board version matching table, fam on the OMUa are correct. If the program files are incorrect, contact Huawei engineers. 2. Run RST BRD to reset the board. 3. Go to Step 8. NOTE You can obtain the correct board version matching table from the version matching documents. Step 11 Verify this board is functioning correctly by testing the CS services with dialing and PS services with web browsing. ----End Follow-up Procedure Record the name and the bar code of the replaced board. Check whether there are obvious physical damages, such as the distorted pin, broken pin, or burnt board. If there is any damage, fill in the BSC6900 site maintenance record and pack the replaced board. When packing a board, pay attention to the following points: l Wear an ESD wrist strap or a pair of ESD gloves. l Ensure that each ESD bag or case holds only one board. l When packing multiple boards, isolate them with ESD materials. Contact the local Huawei office to dispose of the replaced board. NOTE You may obtain the name and the PCB version from the panel or bottom of the faulty board. 7.14 Replacing a TNUa Board This section describes how to replace a faulty TNUa board. The TNUa board is hot-swappable. It takes about four minutes to replace the board. Prerequisite l The tools are ready. The tools are the ESD wrist strap, Phillips screwdriver, ESD box or bag, dustfree cotton cloth, and fiber cleaner. l A new TNUa board is ready. l The LMT is started and communicates with the OMU properly. Issue 05 (2011-05-19) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. 7-53
  • 97. BSC6900 GSM Site Maintenance Guide 7 Replacing Boards and Modules Context CAUTION l To avoid damage to the boards, ASIC chips, or other electronic components, wear an ESD wrist strap properly. Ensure that the ESD wrist strap is properly connected to the ESD connector on the cabinet. If no ESD wrist strap or no proper grounding point is available, wear ESD gloves. l It is recommended that you use a board of the same type to replace the board. To use a board of the different version to replace the board (for example, the board of version a replace the board of version b), contact Huawei for technical support. CAUTION l Replacing the standby TNUa board decreases the internal switching capacity and has no impact on the ongoing services. l When no standby board is in position, replacing the TNUa board in the MPS resets all the other boards in the MPS and disrupts all the ongoing services in the subrack. l When no standby board is in position, replacing the TNUa board in the EPS/TCS resets all the other boards in the EPS/TCS and disrupts all the ongoing services in the subrack. In addition, the communication between the EPS/TCS and the MPS is disrupted. Procedure Step 1 Display the subrack that houses the TNUa board in the Device Panel on the LMT. Check the configuration of the TNUa board. If... Then... Slots 4 and 5 are configured with the TNUa boards, Go to Step 2. Slot 4 or 5 is configured with the TNUa board, Go to Step 3. Step 2 Run the DSP BRD command to query the status of the board to be replaced. If... Then... CPU status is Active normal, 1. Run the SWP BRD command to switch the board over to standby status. 2. Go to Step 3. CAUTION A forced active/standby switchover may affect the running of the system. Therefore, run this command when the traffic is light, for instance, at midnight. 7-54 Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. Issue 05 (2011-05-19)
  • 98. BSC6900 GSM Site Maintenance Guide 7 Replacing Boards and Modules If... Then... The parameter is of any other values, Go to Step 3. Step 3 Check whether the labels on the cables connected to the TNUa board are legible. If the labels are illegible, attach a new label to the cables to avoid improper connection after the board is replaced. Step 4 Disconnect the cables from the faulty board. Step 5 Remove the board to be replaced by referring to 7.2.1 Removing a Board. Step 6 Insert the new board into the subrack by referring to 7.2.2 Inserting a Board. The new board automatically loads program and configuration data, and the RUN LED blinks every other 0.125s. Step 7 Install the cables by referring to the labels. Step 8 If the RUN LED blinks every other second, run DSP BRD to query the status of the new board. If... Then... Only one TNUa board is configured, and the CPU status is Active normal, Go to Step 10. Two SCUa boards are configured and the CPU status is Standby normal, Go to Step 10. The parameter is of any other values, Go to Step 9. Step 9 Check whether a board failure alarm is reported on the BSC6900 LMT. If... Then... Alarms caused by a faulty board are reported, 1. Locate and rectify the fault according to the alarm help information. 2. Go to Step 8. No alarms caused by the faulty board are Go to Step 10. reported, Step 10 Run the CMP BRDVER command to check whether the software version of the new board is consistent with the board version matching table. If... Then... The board version is consistent with the board version matching table, Go to Step 11. Issue 05 (2011-05-19) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. 7-55
  • 99. BSC6900 GSM Site Maintenance Guide 7 Replacing Boards and Modules If... Then... The board version is inconsistent with the 1. Ensure that the program files of the board in the OMU active workspace installationbin board version matching table, fam on the OMUa are correct. If the program files are incorrect, contact Huawei engineers. 2. Run RST BRD to reset the board. 3. Go to Step 8. NOTE You can obtain the correct board version matching table from the version matching documents. Step 11 Verify this board is functioning correctly by testing the CS services with dialing and PS services with web browsing. ----End Follow-up Procedure Record the name and the bar code of the replaced board. Check whether there are obvious physical damages, such as the distorted pin, broken pin, or burnt board. If there is any damage, fill in the BSC6900 site maintenance record and pack the replaced board. When packing a board, pay attention to the following points: l Wear an ESD wrist strap or a pair of ESD gloves. l Ensure that each ESD bag or case holds only one board. l When packing multiple boards, isolate them with ESD materials. Contact the local Huawei office to dispose of the replaced board. NOTE You may obtain the name and the PCB version from the panel or bottom of the faulty board. 7.15 Replacing an XPUa Board This section describes how to replace a faulty XPUa board. The XPUa board is hot-swappable. It takes about six minutes to replace and load a board. Prerequisite l l A new XPUa board is ready. l 7-56 The tools are ready. The tools are the ESD wrist strap, Phillips screwdriver, ESD box or bag, and dustfree cotton cloth. The LMT is started and communicates with the OMU properly. Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. Issue 05 (2011-05-19)
  • 100. BSC6900 GSM Site Maintenance Guide 7 Replacing Boards and Modules Context CAUTION l To avoid damage to the boards, ASIC chips, or other electronic components, wear an ESD wrist strap properly. Ensure that the ESD wrist strap is properly connected to the ESD connector on the cabinet. If no ESD wrist strap or no proper grounding point is available, wear ESD gloves. l It is recommended that you use a board of the same type to replace the board. To use a board of the different version to replace the board (for example, the board of version a replace the board of version b), contact Huawei for technical support. CAUTION l Replacing the standby main control XPUa board has no adverse impact on the services in the system. Replacing the main control XPUa board that works independently, however, disrupts services carried in the subrack. l Replacing the standby non main control XPUa board has no adverse impact on the services in the system. Replacing the non main control XPUa board that works independently, however, disrupts services carried in the board. Procedure Step 1 Display the subrack that houses the XPUa board in the Device Panel on the LMT. Check the configuration of the XPUa board. If... Then... The XPUa board to be replaced works in the active/standby mode, Go to Step 2. The XPUa board to be replaced does not work in the active/standby mode, Go to Step 3. NOTE If two BSC6900 boards work in backup mode, the boards must be installed in an even-numbered slot and in the slot numbered with that value plus 1. For example, if the board that is installed in slot 2 does not work in backup mode, the board that is installed in slot 3 does not work in backup mode either. Step 2 Run the DSP BRD command to query the status of the XPUa board to be replaced. Issue 05 (2011-05-19) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. 7-57
  • 101. BSC6900 GSM Site Maintenance Guide 7 Replacing Boards and Modules If... Then... CPU status is Active normal, 1. Run SWP BRD to switch the board over to standby. 2. Go to Step 3. CAUTION A forced active/standby switchover may affect the running of the system. Therefore, run this command when the traffic is light, for instance, at midnight. The CPU is in another status, Go to Step 3. Step 3 Remove the XPUa board to be replaced by referring to 7.2.1 Removing a Board. Step 4 Insert the new XPUa board into the subrack by referring to 7.2.2 Inserting a Board. The new board automatically loads program and configuration data, and the RUN LED blinks every other 0.125s. Step 5 If the RUN LED blinks every other second, run DSP BRD to query the status of the new board. If... Then... The XPUa board to be replaced does not work in the active/standby mode, Go to Step 7. CPU status is Active normal, The XPUa board to be replaced works in the active/standby mode, CPU status is Standby normal, Go to Step 7. The CPU is in another status, Go to Step 6. Step 6 Check whether a board failure alarm is reported on the BSC6900 LMT. If... Then... Alarms caused by a faulty board are reported, 1. Locate and rectify the fault according to the alarm help information. 2. Go to Step 5. No alarms caused by the faulty board are Go to Step 7. reported, Step 7 Run the CMP BRDVER command to check whether the software version of the new board is consistent with the board version matching table. If... The board version is consistent with the board version matching table, 7-58 Then... Go to Step 8. Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. Issue 05 (2011-05-19)
  • 102. BSC6900 GSM Site Maintenance Guide 7 Replacing Boards and Modules If... Then... The board version is inconsistent with the 1. Ensure that the program files of the board in the OMU active workspace installationbin board version matching table, fam on the OMUa are correct. If the program files are incorrect, contact Huawei engineers. 2. Run RST BRD to reset the board. 3. Go to Step 5. NOTE You can obtain the correct board version matching table from the version matching documents. Step 8 Verify this board is functioning correctly by testing the CS services with dialing and PS services with web browsing. ----End Follow-up Procedure Record the name and the bar code of the replaced board. Check whether there are obvious physical damages, such as the distorted pin, broken pin, or burnt board. If there is any damage, fill in the BSC6900 site maintenance record and pack the replaced board. When packing a board, pay attention to the following points: l Wear an ESD wrist strap or a pair of ESD gloves. l Ensure that each ESD bag or case holds only one board. l When packing multiple boards, isolate them with ESD materials. Contact the local Huawei office to dispose of the replaced board. NOTE You may obtain the name and the PCB version from the panel or bottom of the faulty board. 7.16 Replacing an XPUb Board This section describes how to replace a faulty XPUb board. The XPUb board is hot-swappable. It takes about six minutes to replace and load a board. Prerequisite l The tools are ready. The tools are the ESD wrist strap, Phillips screwdriver, ESD box or bag, and dustfree cotton cloth. l A new XPUb board is ready. l The LMT is started and communicates with the OMU properly. Issue 05 (2011-05-19) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. 7-59
  • 103. BSC6900 GSM Site Maintenance Guide 7 Replacing Boards and Modules Context CAUTION l To avoid damage to the boards, ASIC chips, or other electronic components, wear an ESD wrist strap properly. Ensure that the ESD wrist strap is properly connected to the ESD connector on the cabinet. If no ESD wrist strap or no proper grounding point is available, wear ESD gloves. l It is recommended that you use a board of the same type to replace the board. To use a board of the different version to replace the board (for example, the board of version a replace the board of version b), contact Huawei for technical support. CAUTION l Replacing the standby main control XPUb board has no adverse impact on the system. Replacing the main control XPUb board that works independently, however, disrupts services carried in the subrack. l Replacing the standby non-main control XPUb board has no adverse impact on the system. Replacing the non-main control XPUb board that works independently, however, disrupts services carried on the board. Procedure Step 1 Display the subrack that houses the XPUb board in the Device Panel on the LMT. Check the configuration of the XPUb board. If... Then... The XPUb board to be replaced works in active/standby mode, Go to Step 2. The XPUb board to be replaced does not work in active/standby mode, Go to Step 3. NOTE If two BSC6900 boards work in backup mode, the boards must be installed in an even-numbered slot and in the slot numbered with that value plus 1. For example, if the board that is installed in slot 2 does not work in backup mode, the board that is installed in slot 3 does not work in backup mode either. Step 2 Run the DSP BRD command to query the status of the XPUb board to be replaced. 7-60 Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. Issue 05 (2011-05-19)
  • 104. BSC6900 GSM Site Maintenance Guide 7 Replacing Boards and Modules If... Then... CPU status is Active normal, 1. Run the SWP BRD command to switch the board to standby status. 2. Go to Step 3. CAUTION A forced active/standby switchover may affect the running of the system. Therefore, run this command in low traffic hours, for instance, at midnight. The parameter is of any other values, Go to Step 3. Step 3 Remove the XPUb board to be replaced by referring to 7.2.1 Removing a Board. Step 4 Install the new XPUb board into the subrack by referring to 7.2.2 Inserting a Board. The new board automatically loads program and configuration data, and the RUN LED blinks every other 0.125s. Step 5 If the RUN LED blinks every other second, run the DSP BRD command to query the status of the new board. If... Then... The XPUb board to be replaced does not work in active/standby mode, CPU status is Active normal, Go to Step 7. The XPUb board to be replaced works in active/standby mode, CPU status is Standby normal, Go to Step 7. The parameter is of any other values, Go to Step 6. Step 6 Check whether a board failure alarm is reported on the LMT. If... Then... Alarms caused by a faulty board are reported, 1. Locate and rectify the fault according to the alarm help information. 2. Go to Step 5. No alarms caused by the faulty board are Go to Step 7. reported, Step 7 Run the CMP BRDVER command to check whether the software version of the new board is consistent with the board version matching table. Issue 05 (2011-05-19) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. 7-61
  • 105. BSC6900 GSM Site Maintenance Guide 7 Replacing Boards and Modules If... Then... The board version is consistent with the board version matching table, Go to Step 8. The board version is inconsistent with the 1. Ensure that the program files of the board in the OMU active workspace installationbin board version matching table, fam on the OMUa board are correct. If the program files are incorrect, contact Huawei engineers. 2. Run the RST BRD command to reset the board. 3. Go to Step 5. NOTE You can obtain the correct board version matching table from the version matching documents. Step 8 Verify this board is functioning correctly by testing the CS services with dialing and PS services with web browsing. ----End Follow-up Procedure Record the name and the bar code of the replaced board. Check whether there are obvious physical damages, such as the distorted pin, broken pin, or burnt board. If there is any damage, fill in the BSC6900 site maintenance record and pack the replaced board. When packing a board, pay attention to the following points: l Wear an ESD wrist strap or a pair of ESD gloves. l Ensure that each ESD bag or case holds only one board. l When packing multiple boards, isolate them with ESD materials. Contact the local Huawei office to dispose of the replaced board. NOTE You may obtain the name and the PCB version from the panel or bottom of the faulty board. 7.17 Replacing a WOPB Board This section describes how to replace a faulty WOPB board. The WOPB board is hot-swappable. It takes about ten minutes to replace the board. Prerequisite l l A new WOPB board is ready according to field requirements. l 7-62 The tools are ready. They are the ESD wrist strap, Phillips screwdriver, and ESD box or bag. The LMT is started, and the connection between the LMT PC and the server is normal. Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. Issue 05 (2011-05-19)
  • 106. BSC6900 GSM Site Maintenance Guide 7 Replacing Boards and Modules Context CAUTION l You are required to Wear an ESD Wrist Strap and plug the ESD wrist strap into the ESD connector of the cabinet before replacing the board. If the ESD wrist strap is unavailable or if there is no ESD connector for the ESD wrist strap, wear ESD gloves. l During the replacement of the WOPB board, the overvoltage protection function is unavailable. Procedure Step 1 Remove the captive screw on the WOPB board with a Phillips screwdriver, as shown in Figure 7-12. Figure 7-12 Replacing a WOPB board WOPB Handle Screw Step 2 Hold the handle of the WOPB board and remove the board from the power distribution box. Then, put the board into an ESD box or bag. CAUTION The WOPB board is twice as long as other boards. To avoid damaging the WOPB board during the replacement, move the board only after you have completely removed the board from the cabinet. Issue 05 (2011-05-19) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. 7-63
  • 107. BSC6900 GSM Site Maintenance Guide 7 Replacing Boards and Modules Step 3 Insert the new WOPB board along the guide rails. Step 4 Secure the captive screw on the WOPB board. Step 5 Check whether a board failure alarm is reported on the LMT. If such an alarm is reported, identify and rectify the fault according to the alarm information. ----End Follow-up Procedure Record the name and the bar code of the replaced board. Check whether there are obvious physical damages, such as the distorted pin, broken pin, or burnt board. If there is any damage, fill in the BSC6900 site maintenance record and pack the replaced board. When packing a board, pay attention to the following points: l Wear an ESD wrist strap or a pair of ESD gloves. l Ensure that each ESD bag or case holds only one board. l When packing multiple boards, isolate them with ESD materials. Contact the local Huawei office to dispose of the replaced board. NOTE You may obtain the name and the PCB version from the panel or bottom of the faulty board. 7.18 Replacing a Subrack This section describes how to replace a faulty BSC6900 subrack. It takes about 60 minutes to replace a subrack. Prerequisite l The tools are ready. The tools are the ESD wrist strap, Phillips screwdriver, flat-head screwdriver, diagonal pliers, dustfree cotton cloth, and fiber cleaner. l A new subrack is ready. Context CAUTION l To protect the components from electrostatic discharge, wear an ESD wrist strap properly. Ensure that the ESD wrist strap is properly connected to the ESD connector on the cabinet. If no ESD wrist strap or no proper grounding point is available, wear ESD gloves. l Replacing the MPS disrupts all the services carried in the BSC6900. l Replacing the EPS/TCS disrupts all the services carried in this subrack. l You should quickly replace a subrack with caution when the traffic is light, for instance, at midnight. l For safety reason, three persons are required to replace a subrack due to the heavy weight. 7-64 Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. Issue 05 (2011-05-19)
  • 108. BSC6900 GSM Site Maintenance Guide 7 Replacing Boards and Modules Procedure Step 1 Check whether the labels on the cables that are connected to the subrack are legible. If the labels are illegible, attach a new label to the cables to avoid wrong connection after replacing the subrack. Step 2 Record the installation positions of the boards in the subrack. Step 3 Check the type of subrack to be replaced. If the subrack is... Then... EPS/TCS, Turn off the power switches controlling the subrack to be replaced. MPS, 1. Flip open the ejector levers of the OMUa board, as shown in part B of Removing the OMUa board. Repeat this step if two OMUa boards are in the subrack. 2. After the OFFLINE LED on the OMUa board is ON, turn off the power switches that controls the subrack to be replaced. NOTE For distribution of the BSC6900 power switches, see the labels on the front panel of the power distribution box. For details, see 4.2 Distribution of Power Switches on the High-Power PDB, 4.1 Distribution of Power Switches on the Common Power Distribution Box. Step 4 Remove the cables connected to the subrack by referring to 8 Replacing the Cables. Step 5 Remove the boards from the subrack in order by referring to 7.2.1 Removing a Board. Then, put them in the ESD boxes or bags. Step 6 Remove the eight captive screws fixing the subrack on the cabinet from the front of the cabinet and reserve them for future use. Step 7 One person pushes the subrack along the guide rails from the back of the cabinet. The other two persons hold the subrack by the mounting ears and remove the subrack from the cabinet. Step 8 Two persons hold the mounting ears and the bottom of the new subrack from the front of the cabinet. Then, install the subrack into the cabinet along the guide rails. Then, fix the captive screws to secure the subrack. Step 9 Set the DIP switch of the new subrack according to the settings of the DIP switch of the subrack to be replaced. For details, see 10.1 DIP Switch on the Subrack. Step 10 Connect the power cable, grounding cable, and PGND cable to the new subrack. Step 11 Turn on the power switches controlling the subrack on the power distribution box. Step 12 Insert the boards into the subrack by referring to the records in Step 2 and 7.2.2 Inserting a Board. NOTE If the subrack to be replaced is the MPS, insert the OMUa board first to power on and load the configuration data to the OMUa board. Step 13 Connect cables to the subrack by referring to 8 Replacing the Cables. Issue 05 (2011-05-19) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. 7-65
  • 109. BSC6900 GSM Site Maintenance Guide 7 Replacing Boards and Modules Step 14 Carry out a load commissioning and a service commissioning. For detailed procedures, see the BSC6900 GSM Commissioning Guide. Step 15 Check whether alarms related to subrack failure such as Cell Setup Failure are cleared after the BSC6900 subrack is replaced. Clear these alarms by referring to the alarm online help on the LMT. If the faults persist, contact Huawei for technical support. ----End Follow-up Procedure Contact the local Huawei office to handle the faulty subrack. 7.19 Replacing the Independent Fan Subrack When the independent fan subrack in the BSC6900 is faulty, the independent fan subrack must be replaced. It takes about 15 minutes to replace an independent fan subrack. Prerequisite l The tools are ready. The tools are the ESD wrist strap, Phillips screwdriver, flat-head screwdriver, diagonal pliers, dustfree cotton cloth, and fiber cleaner. l A new independent fan subrack is ready. Context CAUTION To protect the components from electrostatic discharge, wear an ESD wrist strap properly. Ensure that the ESD wrist strap is properly connected to the ESD connector on the cabinet. If no ESD wrist strap or no proper grounding point is available, wear ESD gloves. Procedure Step 1 Check whether the labels on the cables that are connected to the independent fan subrack are legible. If the labels are illegible, attach a new label to the cables to avoid wrong connection after replacing the independent fan subrack. Step 2 Turn off the power switches that control the independent fan subrack to be replaced. NOTE For distribution of the BSC6900 power switches, see the labels on the front panel of the power distribution box. For details, see 4.2 Distribution of Power Switches on the High-Power PDB. Step 3 Remove the cables connected to the independent fan subrack by referring to 8 Replacing the Cables. Step 4 Remove the four captive screws that fix the independent fan subrack from the front of the cabinet and reserve them for future use. 7-66 Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. Issue 05 (2011-05-19)
  • 110. BSC6900 GSM Site Maintenance Guide 7 Replacing Boards and Modules Step 5 Hold the independent fan subrack by the mounting ears and remove the independent fan subrack from the cabinet. Step 6 Hold the mounting ears and the bottom of the new independent fan subrack from the front of the cabinet. Then, install the independent fan subrack into the cabinet along the guide rails. Then, fix the captive screws to secure the independent fan subrack. Step 7 Connect the power cable, monitoring signal cable, and PGND cable to the new independent fan subrack. Step 8 Turn on the power switches that control the independent fan subrack on the power distribution box. Step 9 Perform service commissioning. For detailed procedures, see the BSC6900 GSM Commissioning Guide. Step 10 After replacing the independent fan subrack in the BSC6900 cabinet, check whether the alarms related to the independent fan subrack are cleared. If these alarms persist, clear them by referring to the alarm online help on the LMT. If these alarms still persist, contact Huawei for technical support. ----End Follow-up Procedure Contact the local Huawei office to dispose of the replaced independent fan subrack. 7.20 Replacing the Power Distribution Box This section describes how to replace a faulty power distribution box. It takes about 25 minutes to replace a power distribution box. Prerequisite l The tools are ready. They are ESD wrist strap, Phillips screwdriver, cable ties, diagonal pliers, insulation tapes, and sticky label papers. l The new power distribution box is configured according to actual requirements on site. Context CAUTION To protect the components from electrostatic discharge, wear an ESD wrist strap properly. Ensure that the ESD wrist strap is properly connected to the ESD connector on the cabinet. If no ESD wrist strap or no proper grounding point is available, wear ESD gloves. Issue 05 (2011-05-19) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. 7-67
  • 111. BSC6900 GSM Site Maintenance Guide 7 Replacing Boards and Modules CAUTION l Replacing the power distribution box in the EPR/TCR disrupts all the services carried by the EPR/TCR. l Replacing the power distribution box in the MPR disrupts all the services carried by the entire BSC6900. There are two types of power distribution boxes for the BSC6900, and they are different in terms of the rear panel. Figure 7-13 shows the rear panel of the common power distribution box. Figure 7-13 Rear panel of the common power distribution box 1 Power input terminals 2 Power output terminals 3 COM3: Port connecting the power distribution box and a service subrack The installation positions for the -48 V power cable and RTN power cable are labeled -48V and RTN on the power input terminal block and power output terminal block. Figure 7-14 shows the rear panel of the high-power distribution box. 7-68 Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. Issue 05 (2011-05-19)
  • 112. BSC6900 GSM Site Maintenance Guide 7 Replacing Boards and Modules Figure 7-14 Rear panel of the high-power distribution box 1 Power input terminals 2 Power output terminals 3 Port connecting the power distribution box and a service subrack 4 2-hole grounding screw l On the power input terminal, the installation positions for the -48 V power cables are labeled 3(-), 2(-), and 1(-), and the installation positions for the RTN power cables are labeled 3 (+), 2(+), and 1(+). l The installation positions for the -48 V power cables and RTN power cables are labeled NEG(-) and RTN(+) on the power output terminal of the power distribution box. l Replace a common power distribution box. Procedure 1. Record the state of each power switch on the power distribution box. Set all the switches to OFF. 2. Set the power switches that control the BSC power supply on the DC PDF to OFF. CAUTION After powering off the cabinet, wait for five minutes, and then replace the power distribution box. 3. Remove the cables from the common power distribution box. Figure 7-13 shows the cables connected to the panel of the common power distribution box. – Check the engineering labels on the power input cables, as shown in 1 of Figure 7-13. If the label is not legible, attach a temporary label and fill in the position of the cable. Then, remove the power cables. – Check the engineering labels on the power output cables, as shown in 2 of Figure 7-13. If the label is not legible, attach a temporary label and fill in the position of the cable. Then, remove the power cables. – Remove the signal monitoring cable that is connected to the port shown in 3 of Figure 7-13. – Remove the PGND cable that is connected to the busbar of the cabinet from the power distribution box. Issue 05 (2011-05-19) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. 7-69
  • 113. BSC6900 GSM Site Maintenance Guide 7 Replacing Boards and Modules 4. Remove the four screws from the front hanger of the power distribution box. Keep the screws properly for future use. 5. Remove the screws on the front panel of the power distribution box by using the M3 Phillips screwdriver. 6. Hold the handle of the power distribution box and take it out of the cabinet. 7. Insert the new box into the cabinet. 8. Fasten the four screws to the front hanger of the power distribution box. Fasten the screws to the front panel of the power distribution box. 9. Connect the cables to the power distribution box. – Connect the PGND cable to the power distribution box. – Connect the power input cable by referring to the engineering label or temporary label. Then, stick a new engineering label to the cable. – Connect the power output cable by referring to the engineering label or temporary label. Then, stick a new engineering label to the cable. – Connect the signal monitoring cable to the power distribution box. 10. Ensure that all the power cables are correctly connected. 11. Set the power switch that controls the power supply of the power distribution box on the PDF to ON. 12. Set the switches on the power distribution box to ON by referring to the records in Step 1. 13. After replacing the power distribution box, check the items in Table 7-3. Table 7-3 Checklist for the new power distribution box Item Result Action LEDs on the panel show the normal status of the power distribution box. For details about the LEDs, refer to LEDs on the MDMC Panel. Yes Check the next item. No 1. Check whether the power input cables are correctly connected. If the power input cables are incorrectly connected, reconnect the cables. 2. If faults persist, contact Huawei for technical support. Alarms related to the power distribution box failure are cleared. Yes Check the next item. No 1. Clear the alarms by referring to the alarm online help on the LMT. 2. If the alarms persist, contact Huawei for technical support. The power distribution box supplies power to 7-70 Yes Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. End the check. Issue 05 (2011-05-19)
  • 114. BSC6900 GSM Site Maintenance Guide 7 Replacing Boards and Modules Item Result Action all the components in the cabinet. No 1. Check whether the power output cables are correctly connected. If the power output cables are incorrectly connected, turn off all the power switches on the power distribution box and the power switches that control power supply of the cabinet on the PDF. Then reconnect the cables. 2. If faults persist, contact Huawei for technical support. NOTE After powering on the cabinet, check the power supply to the internal components and handle problems accordingly. l Replace a high-power distribution box. 1. Record the state of each power switch on the power distribution box. Set all the power switches to OFF. 2. Set the power switches that control the BSC power supply on the DC PDF to OFF. CAUTION After powering off the cabinet, wait for five minutes, and then replace the power distribution box. 3. Loosen the screws on the rear transparent plastic filler panel of the power distribution box by using the M3 Phillips screwdriver. Then, remove the plastic filler panel. 4. Remove the cables from the power distribution box. Figure 7-14 shows the cables connected to the panel of the high-power distribution box. – Check the engineering labels on the power input cables, as shown in 1 of Figure 7-14. If the label is not legible, attach a temporary label and fill in the position of the cable. Then, remove the power cables. – Check the engineering labels on the power output cables, as shown in 2 of Figure 7-14. If the label is not legible, attach a temporary label and fill in the position of the cable. Then, remove the power cables. – Remove the signal monitoring cable that is connected to the port shown in 3 of Figure 7-14. – Remove the PGND cable that is connected to the busbar of the cabinet from the power distribution box. Issue 05 (2011-05-19) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. 7-71
  • 115. BSC6900 GSM Site Maintenance Guide 7 Replacing Boards and Modules 5. Remove the four screws from the hanger of the power distribution box. Keep the screws properly for future use. 6. Remove the screws on the front panel of the power distribution box by using the M3 Phillips screwdriver. Then, remove the MCBs and filler panels from the power distribution box. Keep the components for future use. 7. Hold the handle of the power distribution box and take it out of the cabinet. 8. Loosen the six screws on the front plastic panel of the new power distribution box by using the M3 Phillips screwdriver. Then, remove the plastic panel. 9. Install the MCBs in the new power distribution box. Note the installation positions. 10. Install the filler panels at the positions where MCBs are not installed in the new power distribution box. 11. Install the plastic panel of the new power distribution box, install the power distribution box on the top of the cabinet, and then fasten the four screws on the front hanger of the power distribution box. 12. Connect the cables to the power distribution box. – Connect the PGND cable to the power distribution box. – Connect the power input cable by referring to the engineering label or temporary label. Then, stick a new engineering label to the cable. – Connect the power output cable by referring to the engineering label or temporary label. Then, stick a new engineering label to the cable. – Connect the signal monitoring cable to the power distribution box. 13. Ensure that all the power cables are correctly connected. 14. Set the power switch that controls the power supply of the power distribution box on the PDF to ON 15. Set the power switches on the power distribution box to ON by referring to the records in Step 1. 16. Install the transparent plastic filler panel at the rear of the power distribution box. 17. After replacing the power distribution box, check the items in Table 7-4. Table 7-4 Checklist for the new power distribution box Item Result Action LEDs on the panel show the normal status of the power distribution box. For details about the LEDs, refer to 9.13 LEDs on the PAMU Board. Yes Check the next item. No 1. Check whether the power input cables are correctly connected. If the power input cables are incorrectly connected, reconnect the cables. 2. If faults persist, contact Huawei for technical support. Alarms related to the power distribution box failure are cleared. 7-72 Yes Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. Check the next item. Issue 05 (2011-05-19)
  • 116. BSC6900 GSM Site Maintenance Guide 7 Replacing Boards and Modules Item Result Action No 1. Clear the alarms by referring to the alarm online help on the LMT. 2. If the alarms persist, contact Huawei for technical support. The power distribution box supplies power to all the components in the cabinet. Yes End the check. No 1. Check whether the power output cables are correctly connected. If the power output cables are incorrectly connected, turn off all the power switches on the power distribution box and the power switches that control power supply of the cabinet on the PDF. Then reconnect the cables. 2. If the faults persist, contact Huawei for technical support. NOTE After powering on the cabinet, check the power supply to the internal components and handle problems accordingly. ----End Follow-up Procedure Contact the local Huawei office to handle the faulty power distribution box. 7.21 Replacing the Fan Box When a fan box in the service subrack or in the independent fan subrack is faulty, the fan box must be replaced. You should finish the replacement of the fan box in less than one minute. Prerequisite l The tools are ready. The tools are the ESD wrist strap, Phillips screwdriver, and flat-head screwdriver. l The backup fan box is clean. Issue 05 (2011-05-19) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. 7-73
  • 117. BSC6900 GSM Site Maintenance Guide 7 Replacing Boards and Modules Context CAUTION To protect the components from electrostatic discharge, wear an ESD wrist strap properly. Ensure that the ESD wrist strap is properly connected to the ESD connector on the cabinet. If no ESD wrist strap or no proper grounding point is available, wear ESD gloves. CAUTION Replacing the fan box severely affects the heat dissipation; therefore, you are advised to replace the fan box within one minute. Otherwise, the boards may be damaged due to high temperature. Procedure Step 1 Set the DIP switch on the PFCU or the jumper pins on the PFCB according to the installation position and actual configuration of the fan box. l If the fan box is located in the service subrack and the PFCU board is configured, set the DIP switch on the PFCU board (as shown in Figure 7-15) in the new fan box according to Table 7-5. Figure 7-15 DIP switch on the PFCU Table 7-5 Setting of the DIP switch on the PFCU DIP Switch DIP Bit Switch Status Description SW1 1 (the least significant bit) OFF 1 2 ON 0 3 ON 0 4 (the most significant bit) ON 0 l If the fan box is located in the independent fan subrack and the PFCU board is configured, set the DIP switch on the PFCU board (as shown in Figure 7-16) in the new fan box according to Table 7-6. 7-74 Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. Issue 05 (2011-05-19)
  • 118. BSC6900 GSM Site Maintenance Guide 7 Replacing Boards and Modules Figure 7-16 DIP switch on the PFCU Table 7-6 Setting of the DIP switch on the PFCU DIP Switch DIP Bit Switch Status Description SW1 1 (the least significant bit) ON 0 2 ON 0 3 OFF 1 4 (the most significant bit) ON 0 l If the fan box is located in the service subrack and the PFCB board is configured, set the jumper pins on the PFCB board (as shown in Figure 7-17) in the new fan box according to Table 7-7 Figure 7-17 Jumper pins on the PFCB Table 7-7 Setting of the jumper pins on the PFCB Pin Numb er 1-2 3-4 5-6 7-8 9-10 11-12 13-14 15-16 Conne cted to jumpe r NO NO NO NO YES NO NO NO l If the fan box is located in the independent fan subrack and the PFCB board is configured, set the jumper pins on the PFCB board (as shown in Figure 7-18) in the new fan box according to Table 7-8. Issue 05 (2011-05-19) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. 7-75
  • 119. BSC6900 GSM Site Maintenance Guide 7 Replacing Boards and Modules Figure 7-18 Jumper pins on the PFCB Table 7-8 Setting of the jumper pins on the PFCB Pin Numb er 1-2 3-4 5-6 7-8 9-10 11-12 13-14 15-16 Conne cted to jumpe r NO NO NO NO NO NO YES NO Step 2 Loosen the captive screws from the panel of the fan box. Step 3 Remove the fan box along the guide rails, as shown in Figure 7-19. When the fan box is almost out of the cabinet, hold the bottom of the fan box with one hand and the handle with the other until the fan box is removed from the cabinet. CAUTION When replacing the fan box, do not put your hand inside the fan box. Otherwise, the revolving blade may injure your fingers. 7-76 Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. Issue 05 (2011-05-19)
  • 120. BSC6900 GSM Site Maintenance Guide 7 Replacing Boards and Modules Figure 7-19 Removing the fan box 1 Handle 2 Screw 3 LED Step 4 Reserve the replaced fan box for later handling. Step 5 Insert the new fan box into the subrack along the guide rails by holding the bottom of the fan box with one hand and the handle with the other hand. Then, push the fan box by holding two handles on the fan box along the guide rails until the fan starts to work. Step 6 Secure the captive screws on the panel. Step 7 After replacing the fan box, check the items in Table 7-9. Table 7-9 Checklist for replacing the fan box Item Action Whether the LEDs on the panel show that the fan box is in normal state. For details on the LEDs, refer to the following section: Fan Box (Configured with the PFCU Board) if PFCU is configured or Fan Box (Configured with the PFCB Board) if PFCB is configured. Yes Check the next item. No 1. Pull out the fan box slightly. Then, adjust the fan box position and push the fan box back in position. Whether the alarms caused by the faulty fan box are cleared. Issue 05 (2011-05-19) Result Yes 2. If the alarm box is still abnormal, contact Huawei Customer Service Center. Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. End the check. 7-77
  • 121. BSC6900 GSM Site Maintenance Guide 7 Replacing Boards and Modules Item Result Action No 1. Clear the alarms by referring to the alarm online help on the LMT. 2. If the alarms persist, contact Huawei Customer Service Center. Step 8 Clean the replaced fan box, and then put it in an ESD box or bag. ----End Follow-up Procedure Contact the local Huawei office to handle the replaced fan box. 7.22 Replacing the Pluggable Optical Module This section describes how to replace a pluggable optical module when the module is faulty. Prerequisite l The tools are ready. The tools are the ESD wrist strap, the ESD box or bag, and the diagonal pliers. l A new optical module is ready. Context CAUTION To protect the components from electrostatic discharge, wear an ESD wrist strap properly. Ensure that the ESD wrist strap is properly connected to the ESD connector on the cabinet. If no ESD wrist strap or no proper grounding point is available, wear ESD gloves. In short-distance transmission, the multi-mode optical module is used with the multi-mode fibers. The effective transmission distance is 2 km. In long-distance transmission, the singlemode optical module is used with the single-mode fibers. The effective transmission distance can be 15 km, 40 km, or 80 km. Generally, the single-mode optical module with the effective transmission distance of 15 km is used. The BSC6900 and its peer equipment must use the same type of the optical module, which mainly features the mode and wavelength. Table 7-10 lists the related parameters of the optical modules. 7-78 Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. Issue 05 (2011-05-19)
  • 122. BSC6900 GSM Site Maintenance Guide 7 Replacing Boards and Modules Table 7-10 Parameters of optical modules Optical Module Type Operati ng Wavele ngth Tran smis sion Rate Max./Min. Output Optical Power Optical Connector Type Function al Transmis sion Distance Multimod e optical module 1,310 nm STM 1 -14.0/-19.0 dBm LC (TX disable) 2 km Singlemode optical module 1,310 nm STM 1 -8.0/-15.0 dBm LC (dedicated) 15 km NOTE l Replacing the hot-swappable optical module on the standby optical interface board does not have a negative effect on the system. l If there is no standby board in position, replacing the hot-swappable optical module on the active optical interface board disrupts all the services carried on the board. Procedure Step 1 Remove the optical cable from the optical port. Step 2 After removing the optical cable, use a protective cap to cover the optical connector. Step 3 Unlock the bayonet, as shown in part 1 of Figure 7-20. Remove the optical module, as shown in part 2 of Figure 7-20. Figure 7-20 Replacing an optical module Issue 05 (2011-05-19) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. 7-79
  • 123. BSC6900 GSM Site Maintenance Guide 7 Replacing Boards and Modules Step 4 Put the removed optical module into an ESD bag. Step 5 Insert the new optical module into the socket on the optical interface board. Ensure that the bayonet lock is secure. Step 6 Connect the optical cable to the optical port. Ensure that the TX and RX ends of the optical cable are connected correctly. You can hear a click sound when the optical cable is securely connected. Step 7 Check whether the alarm related to the optical module is cleared. NOTE An alarm is generated when the optical module is removed. The alarm is cleared when the optical module is reinstalled. ----End Follow-up Procedure Contact the local Huawei office to handle the replaced optical module. 7.23 Replacing an Optical Splitter/Combiner This section describes how to replace an optical splitter/combiner. The BSC6900 optical splitters/combiners are LC/LC-LC single-mode optical splitter/combiner and LC/LC-LC multimode optical splitter/combiner. It takes about five minutes to replace an optical splitter/ combiner. Prerequisite l The following tools are ready: the ESD wrist strap, dustfree cotton cloth, fiber cleaner, and diagonal pliers. l The following materials are ready: cable ties and permanent labels. l A new optical splitter/combiner is ready. l The number and type of optical splitters/combiners to be replaced are clear. Context CAUTION To protect the components from electrostatic discharge, wear an ESD wrist strap properly. Ensure that the ESD wrist strap is properly connected to the ESD connector on the cabinet. If no ESD wrist strap or no proper grounding point is available, wear ESD gloves. 7-80 Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. Issue 05 (2011-05-19)
  • 124. BSC6900 GSM Site Maintenance Guide 7 Replacing Boards and Modules CAUTION l When replacing the optical splitter/combiner, do not look into the optical port without eye protection. l Replacing an optical splitter/combiner disrupts ongoing services on the corresponding interface boards. Therefore, replace it in low traffic hours, for example, at midnight. Procedure Step 1 Attach temporary labels to the new optical splitter/combiner for easy identification. It is recommended that content of the temporary labels be identical with the labels on the old optical splitter/combiner. Step 2 Put the new optical splitter/combiner aside the old optical splitter/combiner. Step 3 Disconnect the optical fiber by pressing the tab on the optical connector. Then, remove the optical splitter/combiner to be replaced. Step 4 Install the new optical splitter/combiner by referring to Installing the Optical Splitter/Combiner. CAUTION The TX end and RX end of the new optical splitter/combiner must be correctly connected. Otherwise, optical signals cannot be received or transmitted. Step 5 Replace the temporary labels on the new optical splitter/combiner with the engineering labels. The content of the engineering labels must be identical with that of the temporary labels. For details, see Attaching an Engineering Label to a Signal Cable. Step 6 Bind the optical splitters/combiners. Step 7 Check the items listed in Table 7-11. Table 7-11 Checklist for monitoring optical splitter/combiner replacement Item Result Action Connection of the optical fiber is correct. Yes Check the next item. No Remove the optical fiber and reconnect it. Optical connectors are properly inserted into the related ports. Yes Check the next item. No Secure the optical connectors. Yes No further action is required. No Clear the alarms by referring to the alarm online help on the LMT. If the alarms persist, contact Huawei for technical support. Alarms related to the transmission cable are cleared. Issue 05 (2011-05-19) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. 7-81
  • 125. BSC6900 GSM Site Maintenance Guide 7 Replacing Boards and Modules ----End Follow-up Procedure Dispose of the replaced optical splitter/combiner to prevent environmental pollution. 7.24 Replacing the KVM This section describes how to replace a faulty KVM. It takes about 10 minutes to replace a KVM. Prerequisite l The tools are ready. They are the ESD wrist strap, Phillips screwdriver, and flat-head screwdriver. l The new KVM is configured according to actual requirements on site. Context CAUTION l You are required to Wear an ESD Wrist Strap and plug the ESD wrist strap into the ESD connector of the cabinet before replacing a KVM. Wear a pair of ESD gloves instead if there is no ESD wrist strap or there is no ESD connector for the ESD wrist strap. l When replacing the KVM, one cannot operate the GBAM through the GUI. Procedure Step 1 Check whether the labels on the cables connected to the KVM are legible. If the labels are not legible, attach new labels to the cables to avoid improper connection after the KVM is replaced. Step 2 Turn off the power switch on the rear panel of the KVM. Step 3 Turn off the power switch that controls power supply to the KVM. Figure 7-21 shows the power switches on the power distribution box in the MPR. 7-82 Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. Issue 05 (2011-05-19)
  • 126. BSC6900 GSM Site Maintenance Guide 7 Replacing Boards and Modules Figure 7-21 Distribution of the power switches in the MPR Step 4 Remove the cables that are connected to the KVM to be replaced. Step 5 Remove the rear hangers from the KVM. Step 6 Remove the screws that fix the front hangers of the KVM to the rack. Then, remove the KVM from the cabinet along the guide rails. Step 7 Place the new KVM in the original position. Then, secure the screws. Step 8 Install the rear hangers on the new KVM, and then secure the screws that fix the rear hangers to the rack. Step 9 Connect the cables to the new KVM. Step 10 Turn on the power switch that controls power supply to the KVM. Figure 7-21 shows the power switches on the power distribution box in the MPR. Step 11 Turn on the power switch on the rear panel of the KVM. Step 12 Check whether the KVM works normally. If the KVM does not work normally, clear the alarms by referring to the alarm online help on the LMT. If the alarms persist, contact Huawei for technical support. ----End Follow-up Procedure Contact the local Huawei office to handle the faulty KVM. Issue 05 (2011-05-19) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. 7-83
  • 127. BSC6900 GSM Site Maintenance Guide 7 Replacing Boards and Modules 7.25 Replacing the LAN Switch This section describes how to replace a faulty LAN switch. It takes about 10 minutes to replace a LAN switch. Prerequisite l The tools are ready. They are the ESD wrist strap, Phillips screwdriver, and flat-head screwdriver. l The new LAN switch is configured according to actual requirements on site. Context CAUTION l You are required to Wear an ESD Wrist Strap and plug the ESD wrist strap into the ESD connector of the cabinet before replacing a LAN switch. Wear a pair of ESD gloves instead if there is no ESD wrist strap or there is no ESD connector for the ESD wrist strap. l Replacing the LAN switch disrupts the communication between the LMT/M2000 and the GBAM. Procedure Step 1 Check whether the labels on the Ethernet cables connected to the LAN switch are legible. If the labels are not legible, attach new labels to the cables to avoid improper connection after the LAN switch is replaced. Step 2 Turn off power switch SW3 that controls the power supply to the LAN switch to be replaced. For details on power switches on the power distribution box, see 4.1 Distribution of Power Switches on the Common Power Distribution Box. Step 3 Remove the PGND cable and Ethernet cables that are connected to the LAN switch to be replaced. Step 4 Remove the screws fixing the LAN switch to the rack. Step 5 Remove the LAN switch from the cabinet along the guide rails. Remove the power cable that is connected to the rear of the LAN switch. Step 6 Connect the power cable to the rear of the new LAN switch. Step 7 Place the new LAN switch in the original position. Then, secure the screws. Step 8 Connect the PGND cable and Ethernet cables to the LAN switch. Step 9 Turn on power switch that controls the power supply to the LAN switch. For details on power switches on the power distribution box, see 4.1 Distribution of Power Switches on the Common Power Distribution Box. Step 10 Check the items in Table 7-12. 7-84 Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. Issue 05 (2011-05-19)
  • 128. BSC6900 GSM Site Maintenance Guide 7 Replacing Boards and Modules Table 7-12 Checklist for LAN switch replacement Item Result Action Whether the LEDs on the panel of the LAN switch show that the LAN switch is in normal state. For details on the LEDs, see LAN Switch. Yes Check the next item. No Rectify the fault by referring to the user manual of the LAN switch. Whether the alarms caused by the faulty LAN switch are cleared. Yes Check the next item. No 1. Clear the alarms by referring to the alarm online help on the LMT. 2. If the alarms persist, contact Huawei for technical support. Whether the communication between the LAN switch and other computers on the same network segment is normal Whether the communication between the LAN switch and other computers on the same network segment is normal by running the Ping command. Yes End the check. No Check whether the setting of the LAN switch is correct. l If the setting of the LAN switch is incorrect, modify the setting. l If the setting of the LAN switch is correct, check the connection of the Ethernet cables. ----End Follow-up Procedure Contact the local Huawei office to handle the faulty LAN switch. 7.26 Replacing the GBAM This section describes how to replace a faulty GBAM. It takes about 40 minutes to replace a GBAM. There are three models of GBAM, namely, IBM X3650T, C5210, and HP CC3310. Prerequisite l Issue 05 (2011-05-19) The tools are ready. They are the ESD wrist strap, Phillips screwdriver, straight screwdriver, and ESD boxes or bags. Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. 7-85
  • 129. BSC6900 GSM Site Maintenance Guide 7 Replacing Boards and Modules l A new GBAM is ready. CAUTION l When configuring the new GBAM or OMU board, ensure that the following parameter settings are consistent with those of the GBAM to be replaced: server name or computer name, OS administrator password, admin password, and IP address. l If you change the IP address of the GBAM, you need to reset the alarm box manually. Context CAUTION l To avoid damage to the boards, ASIC chips, or other electronic components, wear an ESD wrist strap properly. Ensure that the ESD wrist strap is properly connected to the ESD connector on the cabinet. If no ESD wrist strap or no proper grounding point is available, wear ESD gloves. l It is recommended that you use a board of the same type to replace the board. To use a board of the different version to replace the board (for example, the board of version a replace the board of version b), contact Huawei for technical support. CAUTION l Replacing the GBAM disrupts the communication between the GBAM and the host boards. l Replacing the GBAM disrupts the communication between the LMT/M2000 and the BSC6900. In this case, you cannot maintain the BSC6900 or collect the alarm information. The BSC6900 host boards, however, work normally during the replacement of the GBAM. Procedure l Replace the GBAM with a new GBAM. 1. 2. Run the Linux OS command poweroff to shut down the GBAM to be replaced. 3. 7-86 Log in to the GBAM as user root, and then run the Linux OS command /etc/rc.d/ omud stop to stop all applications on the GBAM to be replaced. Turn off SW3 and SW6 on the power distribution box that control the power supply to the GBAM to be replaced. Figure 7-22 shows the labels for the power switches on the front panel of the power distribution box. Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. Issue 05 (2011-05-19)
  • 130. BSC6900 GSM Site Maintenance Guide 7 Replacing Boards and Modules Figure 7-22 Front panel of the power distribution box 1 Panel of the MDMC 2 RUN LED 3 ALM LED 4 Mute switch 5 Labels of power switches 6 Power switches 7 Panel of the WOPB board 4. Check whether the labels on the cables that are connected to the GBAM to be replaced are legible. If the labels are not legible, attach a new label to the cables to avoid improper connection after replacing the GBAM. 5. Remove the power cable, PGND cable, and Ethernet cables from the GBAM to be replaced. 6. Remove the screws fixing the GBAM to the rack. 7. Remove the hangers from the GBAM to be replaced, and then install the hangers on the new GBAM. 8. Remove the GBAM from the cabinet along the guide rails. 9. Place the new GBAM in the original position. Then, secure the screws. 10. Connect the power cable, PGND cable, and Ethernet cables to the new GBAM. 11. Turn on the power switch controlling the power supply to the GBAM on the power distribution box. For distribution of the power switches, see labels on the front panel of the power distribution box, as shown in Figure 7-22. 12. Turn on the power switch on the front panel of the new GBAM. 13. Check the items in Table 7-13. Table 7-13 Checklist for GBAM replacement Item Action Whether the LEDs on the panel show that the GBAM is in normal state. For details on the LEDs, see Front Panel of the GBAM (IBM X3650T), Front Panel of the GBAM (HUAWEI C5210), and Front Panel of the GBAM (HP CC3310). Yes Check the next item. No Rectify the fault by referring to the user manual of the GBAM. Alarms related to the failure of the GBAM are cleared. Issue 05 (2011-05-19) Result Yes Check the next item. Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. 7-87
  • 131. BSC6900 GSM Site Maintenance Guide 7 Replacing Boards and Modules Item Result Action No 1. Clear the alarms by referring to the alarm online help on the LMT. 2. If the alarms persist, contact Huawei for technical support. Run the Ping command to check whether the communication between the GBAM and other computers on the same network segment is normal. Yes Check the next item. No 1. Check whether the route setting is correct. If the route setting is incorrect, modify the route setting. 2. If the route setting is correct, check the connection of the Ethernet cables. Check whether the processes are normal. l Yes End the check. No Restart the abnormal processes. If the problem persists, contact Huawei for technical support. Replace the GBAM with an OMUa board. CAUTION l Do not perform any operations that will modify the configuration data or the attributes when replacing the GBAM. l Get a PC ready for file backup during the GBAM replacement. 1. The OMU board can be installed in slots 0 to 3, 20 to 23, or 24 to 27 in the MPS. When replacing the GBAM with the OMU board, first log in the OMU and run the LST BRD command to check whether there is an idle slot for the OMU board. If there is no idle slot for the OMU board, first modify the configuration data. 2. Collect the required information. (1) Run the DSP OMU command to obtain the computer name and external fixed IP address of the GBAM. 7-88 Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. Issue 05 (2011-05-19)
  • 132. BSC6900 GSM Site Maintenance Guide 7 Replacing Boards and Modules NOTE If the external fixed IP address is not configured, its value is displayed as null. In this case, one must apply for an IP address that is in the same network segment as the external virtual IP address and use it as the external fixed IP address. (2) Run the LST VER command to obtain the version information about the GBAM. (3) Run the Linux OS command route to obtain the external mask and gateway IP address of the GBAM. (4) Run the Linux OS command ps -afx to obtain the common directory and active workspace directory of the OMU. 3. Obtain the version software based on the version information obtained in step 2.2. 4. Back up the data on the GBAM. (1) Create a backup directory on the hard disk that has at least 1 GB free space on the PC. The backup directory is used to back up the data on the GBAM. Then, create subdirectories common, data, license, DefaultMeas, cert, and bin under the backup directory. (2) Back up the reg.ini file in the common directory of the OMU to the backup/ common directory of the PC. (3) Run the BKP DB command to back up the OMU databases. The backup databases are stored in /data/backup of the OMU active workspace directory. Then, back up the files in /data/backup of the OMU active workspace directory to the backup/data directory of the PC. (4) Back up the license files in the license of the OMU active workspace directory to the backup/license directory of the PC. (5) Back up the performance task files in /ftp/DefaultMeas of the OMU active workspace directory to the backup/DefaultMeas directory of the PC. (6) Back up the certificate files in /ftp/cert of the OMU active workspace directory to the backup/cert directory of the PC. (7) Back up the bin directory. To back up the bin directory, first run the Linux OS command tar czvf bin.tgz bin/ in the OMU active workspace directory to compress the bin directory. Then, back up the compressed bin.tgz file to the backup/bin directory of the PC. 5. Shut down the GBAM to be replaced. (1) Log in to the GBAM as user root, and then run the Linux OS command /etc/rc.d/ omud stop to stop all applications on the GBAM to be replaced. (2) Run the Linux OS command poweroff to shut down the GBAM to be replaced. (3) Turn off SW3 and SW6 on the power distribution box that control the power supply to the GBAM to be replaced. Figure 7-22 shows the labels for the power switches on the front panel of the power distribution box. 6. Remove the GBAM. (1) Remove the power cable, PGND cable, and Ethernet cables from the GBAM to be replaced. (2) Remove the screws fixing the GBAM to the rack. Then, remove the hangers from the GBAM to be replaced. (3) Remove the GBAM from the cabinet along the guide rails. 7. 8. Issue 05 (2011-05-19) Installing the OMUa Boards Installing the OMU Applications in the Active Workspace Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. 7-89
  • 133. BSC6900 GSM Site Maintenance Guide 7 Replacing Boards and Modules 9. Modify the external fixed IP address, mask, gateway IP address, and computer name of the OMU by using the omutool. For details, see Changing the IP Addresses and Masks of the OMU Ethernet Adapters and Changing the OMU Name. 10. Recover the data. (1) Recover the reg.ini file by first deleting the reg.ini file in the /mbsc/bam/ common/ directory of the OMU and then uploading the reg.ini file in the backup/ common directory of the PC to the /mbsc/bam/common/ directory of the OMU. (2) Recover the license files by uploading the license files in the backup/license directory of the PC to the /mbsc/bam/version_a/license directory of the OMU. (3) Recover the performance task files by uploading the files in the backup/ DefaultMeas directory of the PC to the /mbsc/bam/version_a/ftp/ DefaultMeas directory of the OMU. (4) Recover the license files by uploading the files in the backup/cert directory of the PC to the /mbsc/bam/version_a/ftp/cert directory of the OMU. (5) Recover the bin directory. – Run the Linux OS command mv /mbsc/bam/version_a/bin /mbsc/bam/ version_a/binbak to change the name of the bin directory in the /mbsc/bam/ version_a directory to binbak. – Upload the bin.tgz file in the backup/bin directory of the PC to the /mbsc/ bam/version_a directory of the OMU. – Run the Linux OS command tar xzvf bin.tgz to decompress the bin directory. – Run the Linux OS command rm -fr /mbsc/bam/version_a/binbak to delete the binbak directory. (6) Recover the OMU databases. – Upload the files in the backup/data directory of the PC to the OMU. – Recover the OMU data by using the omu_backup_linker tool. For details, see Restoring the System Data. 11. Run the Linux OS command /etc/rc.d/omud start to start the OMU services. 12. Log in the OMU and run the DSP OMU command to check the status and IP addresses of the new board. 13. Run the DSP OMUMODULE command to check the status of OMU services. 14. Run the DSP BRD command to query the status of the OMU board. 15. After the OMU board works normally, run the ADD BRD command to add the configuration data of the OMU board. 16. Run the SET SCUPORT command to disable ports 10 and 11 on the SCUa board in subrack 0. ----End 7-90 Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. Issue 05 (2011-05-19)
  • 134. BSC6900 GSM Site Maintenance Guide 8 Replacing the Cables 8 Replacing the Cables About This Chapter This chapter describes how to replace the Ethernet cable, E1/T1 cable, optical cable, clock signal cable, cable to the alarm box, and power distribution box monitoring cable. This chapter also describes how to check that the cables are successfully replaced and how to handle the faulty cables. Context The requirements of installing the signal cables see the Principles of Installing the Signal Cables. 8.1 Replacing a Power Cable This section describes how to replace a power cable. It takes about 10 minutes to replace a power cable in overhead mode and about 30 minutes to replace a power cable in underfloor mode. 8.2 Replacing an E1/T1 Cable This section describes how to replace an E1/T1 cable of the BSC6900. The cable consists of the Y-shaped 75-ohm coaxial cable and Y-shaped 120-ohm twisted pair cable. It takes about 10 minutes to replace an E1/T1 cable. 8.3 Replacing an Optical Cable This section describes how to replace an optical cable. The BSC6900 optical cables are LC/PCSC/PC single mode optical cable, LC/PC-SC/PC multi-mode optical cable, LC/PC-FC/PC single mode optical cable, LC/PC-FC/PC multi-mode optical cable, LC/PC-LC/PC single mode optical cable, and LC/PC-LC/PC multi-mode optical cable. It takes about five minutes to replace the cable. 8.4 Replacing an Ethernet Cable This section describes how to replace an Ethernet cable. It takes 5 to 20 minutes to replace an Ethernet cable. 8.5 Replacing a Clock Signal Cable This section describes how to replace a clock signal cable. It takes five to twenty minutes to replace a clock signal cable depending on the installation position of the reference clock. 8.6 Replacing a Y-Shaped Clock Cable This section describes how to replace a Y-shaped clock cable. It takes about 5 to 20 minutes to replace a Y-shaped clock cable, depending on the installation position of the Y-shaped clock cable. Issue 05 (2011-05-19) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. 8-1
  • 135. BSC6900 GSM Site Maintenance Guide 8 Replacing the Cables 8.7 Replacing an Inter-TNUa Cable This section describes how to replace an inter-TNUa cable. It takes five to twenty minutes to replace an inter-TNUa cable depending on the installation position. 8.8 Replacing an EMU RS485 Communication Cable This section describes how to replace the RS485 communication cable. It takes about five minutes to replace the RS485 communication cable. 8.9 Replacing a Signal Cable to the Alarm Box This section describes how to replace a signal cable connected to the alarm box. It takes five to twenty minutes to replace a signal cable depending on the installation position of the alarm box. 8.10 Replacing the Monitoring Signal Cable for the Power Distribution Box This section describes how to replace a monitoring cable of the power distribution box. It takes about 10 minutes to replace a monitoring cable. 8.11 Replacing the Monitoring Signal Cable for the Independent Fan Subrack This section describes how to replace a monitoring signal cable for the independent fan subrack. It takes about 10 minutes to replace a monitoring signal cable for the independent fan subrack. 8-2 Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. Issue 05 (2011-05-19)
  • 136. BSC6900 GSM Site Maintenance Guide 8 Replacing the Cables 8.1 Replacing a Power Cable This section describes how to replace a power cable. It takes about 10 minutes to replace a power cable in overhead mode and about 30 minutes to replace a power cable in underfloor mode. Prerequisite l The tools are ready. The tools are the diagonal pliers, wrench, medium-size flat-head screwdriver, large-size Phillips screwdriver, and socket wrench. l The required materials are ready, including cable ties or wax strings. l The backup power cable is ready. Context CAUTION l To avoid damage to the boards, ASIC chips, or other electronic components, wear an ESD wrist strap properly. Ensure that the ESD wrist strap is properly connected to the ESD connector on the cabinet. If no ESD wrist strap or no proper grounding point is available, wear ESD gloves. l Replacing the power cable between the PDF and the power distribution box may affect the system operation. If the single-input external power is supplied, the replacement causes the system to power off, thus disrupting the services carried on the system. If the dual-input external power is supplied, the replacement does not affect the system operation, but triggers a power failure alarm. l Replacing the power cable between the power distribution box and the subrack may affect the system operation. If the single-input power is supplied, the replacement causes the subrack to power off, thus disrupting the services of the subrack. If the dual-input power is supplied, the replacement does not affect the system operation. l Replacing the power cable between the power distribution box and the independent fan subrack may affect the system operation. If the single-input power is supplied, the replacement causes the independent fan subrack to power off, thus disrupting the services of the independent fan subrack. If the dual-input power is supplied, the replacement does not affect the system operation. l Before replacing a power cable, check the power supply mode (for example, single input or dual input) of the power cable. In the case of single input, be well prepared for the possible service interruption. Lay power cables or install power cables by referring to Installing the Power Cables and PGND Cables. Procedure Step 1 Check the quantity, length, and type of the -48 V power cables and GND cables to be replaced. Ensure that the backup -48 V cables and GND cables are of the proper length and type. Ensure that the power cable connectors are available. Issue 05 (2011-05-19) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. 8-3
  • 137. BSC6900 GSM Site Maintenance Guide 8 Replacing the Cables Step 2 Attach temporary labels to the backup -48 V power cable and GND cable for easy identification. The content on the temporary label should be consistent with the content on the engineering label of the power cable to be replaced. Step 3 Set switches SW1 to SW6, as described in Table 8-1. Table 8-1 Setting switches SW1 to SW6 Type of Power Cable External Power Supply to Be Replaced Mode Operation Power cable between the PDF and the power distribution box Single input Record the states of the switches for power output and turn off all the switches that are ON. Dual input/double dual inputs Record the states of the switches for power output and turn off the switch that controls the -48 V power cable to be replaced. Power cable between the power distribution box and the subrack Single input/dual input Record the states of the switches for power output and turn off the switch that controls the -48 V power cable to be replaced. Power cable between the power distribution box and the independent fan subrack Single input/dual input Record the states of the switches for power output and turn off the switch that controls the -48 V power cable to be replaced. Step 4 To replace the power cable between the PDF and the power distribution box, set the switch on the DC PDF that controls the power supply of the cabinet to OFF, and then disconnect the input power of the power distribution box. To replace the power cable between the power distribution box and the subrack/independent fan subrack, skip this step. Step 5 Remove the original -48 V power cable and GND cable, and lay out the backup -48 V power cable and GND cable. Step 6 Connect the backup -48 V power cable and GND cable to the corresponding ports. Step 7 Replace the temporary labels on the backup -48 V power cable and GND cable with the engineering labels. The content on the engineering label of the backup -48 V power cable and GND cable must be consistent with the content on the engineering label of the original -48 V power cable and GND cable. For details, see Attaching an Engineering Label to a Signal Cable. Step 8 Bind the backup -48 V power cable and GND cable. Step 9 Check whether the backup -48 V power cable and GND cable are correctly connected, and check whether a short-circuit occurs in the backup -48 V power cable and GND cable by using a multimeter. Step 10 Set the switch that controls the power supply of the power distribution box on the PDF to ON. 8-4 Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. Issue 05 (2011-05-19)
  • 138. BSC6900 GSM Site Maintenance Guide 8 Replacing the Cables Step 11 Set the switches whose original states are ON to ON according to the records in step 3. Step 12 After replacing the power cable, check the items listed in Table 8-2. Table 8-2 Checklist for power cable replacement Item Result Action Cable connection is correct. Yes Go to the next item. No Remove the power cable and reconnect it. The connectors of the power cable are properly inserted into the port. Yes Go to the next item. No Secure the connector. Alarms related to the power cable are cleared. Yes Go to the next item. No 1. Clear the alarms by referring to the alarm online help on the LMT. 2. If the alarms persist, contact Huawei for technical support. ----End Follow-up Procedure Dispose of the replaced power cable properly to prevent short-circuits and environmental pollution. 8.2 Replacing an E1/T1 Cable This section describes how to replace an E1/T1 cable of the BSC6900. The cable consists of the Y-shaped 75-ohm coaxial cable and Y-shaped 120-ohm twisted pair cable. It takes about 10 minutes to replace an E1/T1 cable. Prerequisite l The tools are ready. The tools are the ESD wrist strap, flat-head screwdriver, and diagonal pliers. l The required materials are ready, including cable ties or wax strings. l A new E1/T1 cable is ready. Issue 05 (2011-05-19) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. 8-5
  • 139. BSC6900 GSM Site Maintenance Guide 8 Replacing the Cables Context CAUTION To protect the components from electrostatic discharge, wear an ESD wrist strap properly. Ensure that the ESD wrist strap is properly connected to the ESD connector on the cabinet. If no ESD wrist strap or no proper grounding point is available, wear ESD gloves. CAUTION l Replacing the E1/T1 cable disrupts the services carried over the E1/T1 cable. l If the BSC6900 and its peer end are connected through only the E1/T1 cable, all the services between the BSC6900 and its peer end are disrupted during the replacement. Lay E1/T1 cables or install E1/T1 cables by referring to Installing the E1/T1 Cables. Procedure Step 1 Confirm the quantity, length, and type of the E1/T1 cables to be replaced. Arrange for a new E1/T1 cable with proper length and type. Note that extra length should be reserved. Step 2 Add a connector for the DDF to the new E1/T1 cable. Step 3 Attach temporary labels to the new E1/T1 cable. The content on the temporary label should be consistent with the content on the original label. NOTE To facilitate the routing of E1/T1 cables in real situations, you may have to remove the side doors and rear door of the cabinet. Install the removed doors after arranging the E1/T1 cables. Step 4 Lay out the new E1/T1 cable along the original routing, or according to the new routing requirements on site. Step 5 On the BSC6900 side, remove the fastening screws on both ends of the E1/T1 cable without using any tools. Then, disconnect the E1/T1 cable to be replaced from the BSC6900 and the DDF respectively. Step 6 Connect the new E1/T1 cable without using any tools to the original ports on the BSC6900 and the DDF. Step 7 Replace the temporary labels on the new cable with the engineering labels. The content on the engineering label of the new E1/T1 cable must be identical with the content on the engineering label of the original E1/T1 cable. For details, see Attaching an Engineering Label to a Signal Cable. Step 8 Bind the new E1/T1 cables. Step 9 After replacing the E1/T1 cable, check the following item listed in Table 8-3. 8-6 Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. Issue 05 (2011-05-19)
  • 140. BSC6900 GSM Site Maintenance Guide 8 Replacing the Cables Table 8-3 Checklist for E1/T1 cable replacement Item Result Action Cable connection is correct. Yes Check the next item. No Remove the E1/T1 cable and reconnect it. The connectors of the E1/T1 cable are properly inserted into the ports. Yes Check the next item. No Secure the connector. Alarms related to transmission cable are cleared. Yes End the check. No 1. Clear the alarms by referring to the alarm online help on the LMT. 2. If the alarms persist, contact Huawei for technical support. ----End Follow-up Procedure Dispose of the replaced E1/T1 cable properly to prevent short circuit and environmental pollution. 8.3 Replacing an Optical Cable This section describes how to replace an optical cable. The BSC6900 optical cables are LC/PCSC/PC single mode optical cable, LC/PC-SC/PC multi-mode optical cable, LC/PC-FC/PC single mode optical cable, LC/PC-FC/PC multi-mode optical cable, LC/PC-LC/PC single mode optical cable, and LC/PC-LC/PC multi-mode optical cable. It takes about five minutes to replace the cable. Prerequisite l The tools are ready. The tools are the ESD wrist strap, dustfree cotton cloth, fiber cleaner, and diagonal pliers. l The materials are ready. The materials are cable ties or wax strings. l A new optical cable is ready. l Confirm the quantity, length, and type of optical cables to be replaced. Issue 05 (2011-05-19) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. 8-7
  • 141. BSC6900 GSM Site Maintenance Guide 8 Replacing the Cables Context CAUTION To protect the components from electrostatic discharge, wear an ESD wrist strap properly. Ensure that the ESD wrist strap is properly connected to the ESD connector on the cabinet. If no ESD wrist strap or no proper grounding point is available, wear ESD gloves. CAUTION l When replacing the optical cable, invisible laser radiation might be emitted from disconnected fibers or optical connectors. Do not stare into the beams or view directly with optical instruments to prevent eye damages. l When the BSC6900 and other NEs are connected in optical port backup mode, replacing one optical cable does not affect services of the system. Otherwise, replacing an optical cable disrupts all the services carried on that cable. l When the BSC6900 and its peer equipment are connected through only the optical cable, all services between them are disrupted during the replacement. Lay optical cables or install optical cables by referring to Installing the Optical Cables. Procedure Step 1 Attach temporary labels to the new cable for easy identification. It is recommended that content of the temporary label be consistent with that of the original label. Step 2 Lay out the new optical cable according to the original routing or according to the new routing requirements on site. Step 3 Remove the optical cable to be replaced. If... Then... The connector type is LC/PC or SC/PC. Press the tab on the connector and remove the cable. The connector type is FC/PC, Unscrew the optical connector counterclockwise. NOTE If the removed optical cable is not damaged, cap the connector. If the connectors are dirty, clean them with the dustfree cotton cloth or the fiber cleaner. Step 4 Remove the dustproof cap from the optical connector and reserve the cap for later use. Connect the new cable to the original ports. 8-8 Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. Issue 05 (2011-05-19)
  • 142. BSC6900 GSM Site Maintenance Guide 8 Replacing the Cables CAUTION For the LC/PC, SC/PC or FC/PC connector, the TX end and the RX end must be connected correctly by referring to the temporary label. Otherwise, the signal cannot be received or transmitted. Step 5 Replace the temporary labels on the new cable with the engineering labels. Content of the engineering label must be consistent with that of the temporary label. For details, see Attaching an Engineering Label to a Signal Cable. Step 6 Bind the new optical cable. Step 7 Check the items in Table 8-4. Table 8-4 Checklist for optical cable replacement Item Result Action Cable connection is correct. Yes Check the next item. No Remove the cable and reconnect it. The connectors of the optical cable are properly inserted into the port. Yes Check the next item. No Secure the connector. Yes End the check. No Clear these alarms by referring to the alarm online help on the LMT. If the faults persist, contact Huawei for technical support. Alarms related to the transmission cable are cleared. ----End Follow-up Procedure Dispose of the replaced optical cables to prevent environmental pollution. 8.4 Replacing an Ethernet Cable This section describes how to replace an Ethernet cable. It takes 5 to 20 minutes to replace an Ethernet cable. Prerequisite l The tools are ready. The tools are the ESD wrist strap, Ethernet cable meter, Ethernet cable pliers, and diagonal pliers. l The materials are ready. The materials are cable ties or wax strings. l A new Ethernet cable is ready. Issue 05 (2011-05-19) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. 8-9
  • 143. BSC6900 GSM Site Maintenance Guide 8 Replacing the Cables Context CAUTION To protect the components from electrostatic discharge, wear an ESD wrist strap properly. Ensure that the ESD wrist strap is properly connected to the ESD connector on the cabinet. If no ESD wrist strap or no proper grounding point is available, wear ESD gloves. CAUTION l Replacing the Ethernet cables to the LMT disrupts the communication between the LMT PC and the OMU. l The Port Trunking function is used in the interconnection ports on the inter-subrack SCUa board. Replacing one Ethernet cable has no adverse effect on the system. l For the FG2a board, if the BSC6900 is connected to the peer equipment through only the Ethernet cable, services carried between the BSC6900 and the peer equipment are disrupted during the replacement of the Ethernet cable. l The OMUa board is configured with a pair of Ethernet cables. Replacing one of them has no adverse impact on the system. l Confirm the quantity, length, and type of the Ethernet cables to be replaced. The Ethernet cables from different manufacturers differ in color and diameter. The new Ethernet cable should be compatible with the cable to be replaced. l Lay Ethernet cables or install Ethernet cables by referring to Installing the Ethernet Cables. Procedure Step 1 Arrange for a new Ethernet cable with proper length and type. Note that extra length should be reserved. Step 2 Assemble the shielded RJ45 connector or the unshielded RJ45 connector and the Ethernet cable according to the actual requirements by referring to Assembling the Shielded RJ45 Connector and the Ethernet Cable or Assembling the Unshielded RJ45 Connector and the Ethernet Cable, and then check the appearance of metal contact strips and test the connection of assembled cables by referring to Checking the Appearance of Metal Contact Strips and Testing the Connection of Assembled Cables. Step 3 Attach temporary labels to the new cable for clear identification. It is recommended that the content of the temporary label be consistent with that of the old label. Step 4 Lay out the new Ethernet cable according to the original or on-site routing requirements. Step 5 Disconnect the Ethernet cable to be replaced from the ports. Step 6 Connect the new Ethernet cable to the original ports. Step 7 Replace the temporary labels on the new cable with the engineering labels 8-10 Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. Issue 05 (2011-05-19)
  • 144. BSC6900 GSM Site Maintenance Guide 8 Replacing the Cables Content of the engineering label must be consistent with that of the temporary label. For details, see Attaching an Engineering Label to a Signal Cable. Step 8 Bind the new Ethernet cable with cable ties. Step 9 Check the items in Table 8-5. Table 8-5 Checklist for Ethernet cable replacement Item Result Action Cable connection is correct. Yes Check the next item. No Remove the cable and reconnect it. The connectors of the cable are properly inserted into the port. Yes Check the next item. No Secure the connector. Alarms related to network communications are cleared. Yes Check the next item. No Clear these alarms by referring to the alarm online help on the LMT. If the faults persist, contact Huawei for technical support. Two ends connected by the cable can properly communicate with each other after the Ping command is executed in DOS mode. Yes End the check. No Check the cable connection. If the cable connection is faulty, replace it with a new one. ----End Follow-up Procedure Dispose of the replaced Ethernet cable to prevent environmental pollution. 8.5 Replacing a Clock Signal Cable This section describes how to replace a clock signal cable. It takes five to twenty minutes to replace a clock signal cable depending on the installation position of the reference clock. Prerequisite l The tools are ready. The tools are the ESD wrist strap and diagonal pliers. l The materials are ready. The materials are cable ties or wax strings. l A new clock signal cable is ready. Issue 05 (2011-05-19) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. 8-11
  • 145. BSC6900 GSM Site Maintenance Guide 8 Replacing the Cables Context CAUTION To protect the components from electrostatic discharge, wear an ESD wrist strap properly. Ensure that the ESD wrist strap is properly connected to the ESD connector on the cabinet. If no ESD wrist strap or no proper grounding point is available, wear ESD gloves. Lay clock signal cables or install clock signal cables by referring to Installing the Clock Signal Cables. Procedure Step 1 Attach temporary labels to the new cable for easy identification. It is recommended that content of the temporary label be identical with that of the old label. Step 2 Lay out the new clock signal cable according to the original routing or according to the new routing requirements on site. Step 3 Disconnect the clock signal cable from the port. Step 4 Connect the new clock signal cable to the original ports. Step 5 Replace the temporary labels on the new cable with the engineering labels. Content of the engineering label must be consistent with that of the temporary label. For details, see Attaching an Engineering Label to a Signal Cable. Step 6 Bind the new clock signal cables. Step 7 After replacing the clock signal cable, check the items in Table 8-6. Table 8-6 Checklist for clock signal cable replacement Item Result Action Cable connection is correct. Yes Check the next item. No Remove the cable and reconnect it. The connectors of the clock signal cable are properly inserted into the ports. Yes Check the next item. No Secure the connectors. Yes End the check. No Clear these alarms by referring to the alarm online help on the LMT. If the faults persist, contact Huawei for technical support. Alarms related to the clock signal cable are cleared. ----End 8-12 Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. Issue 05 (2011-05-19)
  • 146. BSC6900 GSM Site Maintenance Guide 8 Replacing the Cables Follow-up Procedure Dispose of the replaced clock signal cable to prevent environmental pollution. 8.6 Replacing a Y-Shaped Clock Cable This section describes how to replace a Y-shaped clock cable. It takes about 5 to 20 minutes to replace a Y-shaped clock cable, depending on the installation position of the Y-shaped clock cable. Prerequisite l The tools and items required for replacing a Y-shaped clock cable are ready. The tools and items are ESD wrist strap and diagonal pliers. l The required materials are ready. The materials are cable ties or wax strings. l A new Y-shaped clock cable is ready. Context CAUTION To protect the components from electrostatic discharge, wear an ESD wrist strap properly. Ensure that the ESD wrist strap is properly connected to the ESD connector on the cabinet. If no ESD wrist strap or no proper grounding point is available, wear ESD gloves. CAUTION Replacing the Y-shaped clock cable triggers a clock alarm and leads to a failover of the SCUa. Lay Y-shaped clock cables or install Y-shaped clock cables by referring to Installing the YShaped Clock Cables. Procedure Step 1 Confirm the number, length, and type of the clock cables to be replaced. Attach temporary labels to the new cables to distinguish them from others. The content on the temporary label should be identical to the content on the engineering label of the Y-shaped clock cable to be replaced. Step 2 Ensure that the Y-shaped clock cable is connected to an SCUa in standby mode. Before replacing the Y-shaped clock cable connecting to the active SCUa, switch the SCUa from the active state to the standby state. Step 3 Disconnect the Y-shaped clock cable from the ports. Step 4 Lay out the new Y-shaped clock cable according to the original route. Step 5 Connect the new Y-shaped clock cable to the original ports. Issue 05 (2011-05-19) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. 8-13
  • 147. BSC6900 GSM Site Maintenance Guide 8 Replacing the Cables Step 6 Replace the temporary label on the new cable with the engineering label. The content on the engineering label of the new Y-shaped clock cable must be identical to the content on the engineering label of the original Y-shaped clock cable. For details, see Attaching an Engineering Label to a Signal Cable. Step 7 Bind the new Y-shaped clock cable. Step 8 After replacing the Y-shaped clock cable, check the items listed in Table 8-7. Table 8-7 Checklist for the new Y-shaped clock cable Item Result Action Check whether the physical connection is correct. Yes Go to the next item. No Remove the Y-shaped clock cable and reconnect it. Check whether the connector of the Yshaped clock cable is properly inserted into the port. Yes Go to the next item. No Secure the insertion. Check whether alarms related to the clock cable are cleared. Yes End the check. No 1. Handle the alarm by referring to the alarm help information on the LMT. 2. If the alarms persist, contact Huawei Customer Service Center. ----End Follow-up Procedure Dispose of the replaced Y-shaped clock cable in an environment-friendly way. 8.7 Replacing an Inter-TNUa Cable This section describes how to replace an inter-TNUa cable. It takes five to twenty minutes to replace an inter-TNUa cable depending on the installation position. Prerequisite l l The required materials are ready. The materials are cable ties or wax strings. l 8-14 The tools are ready, including the ESD wrist strap, flat-head screwdriver, and diagonal pliers. A new inter-TNUa cable is ready. Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. Issue 05 (2011-05-19)
  • 148. BSC6900 GSM Site Maintenance Guide 8 Replacing the Cables Context CAUTION To protect the components from electrostatic discharge, wear an ESD wrist strap properly. Ensure that the ESD wrist strap is properly connected to the ESD connector on the cabinet. If no ESD wrist strap or no proper grounding point is available, wear ESD gloves. CAUTION Replacing the inter-TNUa cable disrupts the TDM switching services between the two subracks that are connected by the inter-TNUa cable. Lay inter-TNUa cables or install inter-TNUa cables by referring to Installing the Inter-TNUa Cables. Procedure Step 1 Confirm the quantity, length, and type of the inter-TNUa cables to be replaced. Attach temporary labels to the new cables for easy identification. The content on the temporary label should be identical with the content on the engineering label of the inter-TNUa cable to be replaced. Step 2 Remove the fastening screws from the inter-TNUa cable connector without using any tools, and then remove the cable. Step 3 Lay out the new inter-TNUa cable according to the original routing, or according to the new routing requirements on site. Step 4 Connect the new inter-TNUa cable to the original ports without using any tools. Step 5 Replace the temporary labels on the new inter-TNUa cable with the engineering labels. The content on the engineering label of the new inter-TNUa cable must be identical with the content on the engineering label of the original inter-TNUa cable. For details, see Attaching an Engineering Label to a Signal Cable. Step 6 Bind the new inter-TNUa cable. Step 7 After replacing the inter-TNUa cable, check the items listed in Table 8-8. Table 8-8 Checklist for inter-TNUa cable replacement Item Action Cable connection is correct. Issue 05 (2011-05-19) Result Yes Check the next item. No Remove the inter-TNUa cable and reconnect it. Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. 8-15
  • 149. BSC6900 GSM Site Maintenance Guide 8 Replacing the Cables Item Result Action The connectors of the cable are properly inserted into the port. Yes Check the next item. No Secure the connector. Alarms related to transmission cables are cleared. Yes End the check. No 1. Clear the alarms by referring to the alarm online help on the LMT. 2. If the alarms persist, contact Huawei for technical support. ----End Follow-up Procedure Dispose of the replaced inter-TNUa cable to prevent short circuit and environmental pollution. 8.8 Replacing an EMU RS485 Communication Cable This section describes how to replace the RS485 communication cable. It takes about five minutes to replace the RS485 communication cable. Prerequisite l The tools are ready, including the ESD gloves, diagonal pliers, and flat-head screwdriver. l The required materials are ready, including cable ties or wax strings. l A new RS485 communication cable is ready. Context CAUTION To protect the components from electrostatic discharge, wear an ESD wrist strap properly. Ensure that the ESD wrist strap is properly connected to the ESD connector on the cabinet. If no ESD wrist strap or no proper grounding point is available, wear ESD gloves. Lay RS485 communication cables or install RS485 communication cables by referring to Installing the EMU RS485 Communication Cables. Procedure Step 1 Lay out the new signal cable according to the original routing, or according to the new routing requirements on site. 8-16 Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. Issue 05 (2011-05-19)
  • 150. BSC6900 GSM Site Maintenance Guide 8 Replacing the Cables Step 2 On the EMU side, remove the DB9 male connector on one end of the EMU RS485 communication cable from the DB9 female socket on the EMU. Step 3 On the BSC6900 side, remove the RJ45 connector on the other end of the EMU RS485 communication cable from the J1 port on the power distribution box of the BSC6900 cabinet. Step 4 According to the original cable positions, connect a new RS485 communication cable to the EMU and the power distribution box. Step 5 Attach engineering labels to the new RS485 communication cable. For details, see Attaching an Engineering Label to a Signal Cable. The content on the engineering label of the new RS485 communication cable must be identical with that on the engineering label of the original RS485 communication cable. Step 6 Power on the EMU. Step 7 Test the EMU by referring to the manual delivered with the EMU. Step 8 If the LEDs on the front panel of the EMU indicate abnormal communication on the serial port, check the connection. ----End Follow-up Procedure Dispose of the replaced RS485 communication cable properly to prevent environmental pollution. 8.9 Replacing a Signal Cable to the Alarm Box This section describes how to replace a signal cable connected to the alarm box. It takes five to twenty minutes to replace a signal cable depending on the installation position of the alarm box. Prerequisite l The tools are ready. The tools are the ESD gloves, ESD wrist strap, and diagonal pliers. l The materials are ready. The materials are cable ties. l A new signal cable is ready. Context CAUTION To protect the components from electrostatic discharge, wear an ESD wrist strap properly. Ensure that the ESD wrist strap is properly connected to the ESD connector on the cabinet. If no ESD wrist strap or no proper grounding point is available, wear ESD gloves. Issue 05 (2011-05-19) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. 8-17
  • 151. BSC6900 GSM Site Maintenance Guide 8 Replacing the Cables CAUTION Communication between the alarm box and the LMT PC is disrupted during the replacement. Procedure Step 1 Lay out the new signal cable according to the original routing or according to the new routing requirements on site. Step 2 Loosen the DB9/DB25 connector and then remove the signal cable from the LMT that reports alarms. Step 3 On the alarm box side, power off the alarm box, unlock the alarm box, remove the front panel, and then disconnect the signal cable. Step 4 Connect the new signal cable to the LMT PC and the alarm box by referring to the original connection of the signal cable. Step 5 Reinstall the front panel and lock the alarm box. Step 6 Attach engineering labels to the new signal cable. The content of the new label must be the same as the content of the old one. Step 7 Power on the alarm box. Step 8 Test the alarm box by referring to the manual delivered with the alarm box. Step 9 If the LEDs on the front panel of the alarm box indicate abnormal communication on the serial port, check the connection. ----End Follow-up Procedure Dispose of the replaced signal cable properly to prevent environmental pollution. 8.10 Replacing the Monitoring Signal Cable for the Power Distribution Box This section describes how to replace a monitoring cable of the power distribution box. It takes about 10 minutes to replace a monitoring cable. Prerequisite l l The materials are ready. The materials are cable ties or wax strings. l 8-18 The tools are ready. The tools are the ESD wrist strip, diagonal pliers, and Phillips screwdriver. A new monitoring cable is ready. Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. Issue 05 (2011-05-19)
  • 152. BSC6900 GSM Site Maintenance Guide 8 Replacing the Cables Context CAUTION To protect the components from electrostatic discharge, wear an ESD wrist strap properly. Ensure that the ESD wrist strap is properly connected to the ESD connector on the cabinet. If no ESD wrist strap or no proper grounding point is available, wear ESD gloves. Procedure Step 1 Attach temporary labels to the new cable for easy identification. It is recommended that content of the temporary label be consistent with that of the old label. Step 2 Lay out the monitoring cable. Step 3 Remove the monitoring cable to be replaced from the port. Step 4 Connect the new monitoring cable to the original ports. Step 5 Replace the temporary labels on the new cable with the engineering labels. Content of the engineering label must be consistent with that of the temporary label. For details, see Attaching an Engineering Label to a Signal Cable. Step 6 Bind the monitoring cable. Step 7 After replacing the monitoring cable of the power distribution box, check the items in Table 8-9. Table 8-9 Checklist for monitoring cable replacement Item Result Action Yes Check the next item. No Remove the monitoring cable and connect the cable again. The connectors of the monitoring cable are properly inserted into the port. Yes Check the next item. No Secure the connector. LEDs on the panel properly indicate the running of power distribution box. Yes Check the next item. No Contact Huawei for technical support. Yes End the check. No Clear these alarms by referring to the alarm online help on the LMT. If the faults persist, contact Huawei for technical support. Cable connection is correct. Alarms related to the monitoring cable are cleared. Issue 05 (2011-05-19) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. 8-19
  • 153. BSC6900 GSM Site Maintenance Guide 8 Replacing the Cables ----End Follow-up Procedure Dispose of the replaced monitoring cable to prevent environmental pollution. 8.11 Replacing the Monitoring Signal Cable for the Independent Fan Subrack This section describes how to replace a monitoring signal cable for the independent fan subrack. It takes about 10 minutes to replace a monitoring signal cable for the independent fan subrack. Prerequisite l The tools are ready. The tools are the ESD wrist strip, diagonal pliers, and Phillips screwdriver. l The materials are ready. The materials are cable ties or wax strings. l A new monitoring signal cable for the independent fan subrack is ready. Context CAUTION To protect the components from electrostatic discharge, wear an ESD wrist strap properly. Ensure that the ESD wrist strap is properly connected to the ESD connector on the cabinet. If no ESD wrist strap or no proper grounding point is available, wear ESD gloves. Procedure Step 1 Attach temporary labels to the new cable for easy identification. It is recommended that content of the temporary label be identical with that of the old label. Step 2 Lay out the new monitoring signal cable for the independent fan subrack. Step 3 Disconnect the monitoring signal cable to be replaced from the port. Step 4 Connect the new monitoring signal cable to the corresponding port. Step 5 Replace the temporary labels on the new cable with the engineering labels. The content of the engineering label must be consistent with that of the temporary label. For details, see Attaching an Engineering Label to a Signal Cable. Step 6 Bind the monitoring signal cable to other cables. Step 7 After replacing the monitoring signal cable, check the items in Table 8-10. 8-20 Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. Issue 05 (2011-05-19)
  • 154. BSC6900 GSM Site Maintenance Guide 8 Replacing the Cables Table 8-10 Checklist for monitoring signal cable replacement Item Result Action Yes Go to the next item. No Remove the monitoring signal cable and connect the cable again. The connectors of the monitoring signal cable are securely connected to the ports. Yes Go to the next item. No Secure the connectors of the monitoring signal cable. The LEDs on the panel of the independent fan subrack correctly indicate the state of the fan box. Yes Go to the next item. No Contact Huawei for technical support. Yes End the check. No Clear the alarms by referring to the alarm online help on the LMT. If the alarms persist, contact Huawei for technical support. Cable connection is correct. Alarms related to the monitoring signal cable are cleared. ----End Follow-up Procedure Dispose of the replaced monitoring signal cable properly to prevent environmental pollution. Issue 05 (2011-05-19) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. 8-21
  • 155. BSC6900 GSM Site Maintenance Guide 9 LEDs on the Boards 9 LEDs on the Boards About This Chapter This chapter describes the LEDs on the BSC6900 boards. 9.1 LEDs on the DPUa Board There are three LEDs on the DPUa board: RUN, ALM, and ACT. 9.2 LEDs on the DPUc Board There are three LEDs on the DPUc board: RUN, ALM, and ACT. 9.3 LEDs on the DPUd Board There are three LEDs on the DPUd board: RUN, ALM, and ACT. 9.4 LEDs on the EIUa Board There are three LEDs on the EIUa board: RUN, ALM, and ACT. 9.5 LEDs on the FG2a Board Among all the LEDs on the FG2a board, RUN, ALM, and ACT indicate the status of the FG2a board, and other LEDs indicate the status of Ethernet ports. There are two LEDs at each Ethernet port: LINK and ACT. 9.6 LEDs on the FG2c Board Among all the LEDs on the FG2c board, RUN, ALM, and ACT indicate the status of the FG2c board, and other LEDs indicate the status of Ethernet ports. There are two LEDs at each Ethernet port: LINK and ACT. 9.7 LEDs on the GCUa Board There are three LEDs on the panel of the GCUa board: RUN, ALM, and ACT. 9.8 LEDs on the GOUa Board There are three LEDs on the GOUa board: RUN, ALM, and ACT. 9.9 LEDs on the GOUc Board There are five types of LEDs on the GOUc board: RUN, ALM, ACT, LINK (optical port LED), and ACT (optical port LED). 9.10 LEDs on the MDMC Board There are two LEDs on the MDMC board: RUN and ALM. 9.11 LEDs on the OIUa Board Issue 05 (2011-05-19) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. 9-1
  • 156. BSC6900 GSM Site Maintenance Guide 9 LEDs on the Boards There are four LEDs on the OIUa board: RUN, ALM, ACT, and LOS. 9.12 LEDs on the OMUa/OMUb Board There are five types of LEDs on the OMUa/OMUb board: RUN, ALM, ACT, OFFLINE, and HD. 9.13 LEDs on the PAMU Board There are two LEDs on the PAMU board: RUN and ALM. 9.14 LEDs on the PEUa Board There are three LEDs on the PEUa board: RUN, ALM, and ACT. 9.15 LEDs on the POUc Board There are four types of LEDs on the POUc board: RUN, ALM, ACT, and LOS. 9.16 LEDs on the SCUa Board Among all the LEDs on the SCUa board, RUN, ALM, and ACT indicate the status of the SCUa board, and other LEDs indicate the status of Ethernet ports. There are two LEDs at each Ethernet port: LINK and ACT. 9.17 LEDs on the TNUa Board There are three LEDs on the TNUa board: RUN, ALM, and ACT. 9.18 LEDs on the XPUa Board Among all the LEDs on the XPUa board, RUN, ALM, and ACT indicate the status of the XPUa board, and other LEDs indicate the status of Ethernet ports. There are two LEDs at each Ethernet port: LINK and ACT. 9.19 LEDs on the XPUb Board Among all the LEDs on the XPUb board, RUN, ALM, and ACT indicate the status of the XPUb board, and other LEDs indicate the status of Ethernet ports. There are two LEDs at each Ethernet port: LINK and ACT. 9-2 Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. Issue 05 (2011-05-19)
  • 157. BSC6900 GSM Site Maintenance Guide 9 LEDs on the Boards 9.1 LEDs on the DPUa Board There are three LEDs on the DPUa board: RUN, ALM, and ACT. Table 9-1 describes the LEDs on the DPUa board. Table 9-1 LEDs on the DPUa board LED Color Status Description RUN Green ON for 1s and OFF for 1s The board is functional. ON for 0.125s and OFF for 0.125s The board is in loading state. ON There is power supply, but the board is faulty. OFF There is no power supply, or the board is faulty. OFF There is no alarm. ON or blinking There is a fault alarm. ON The board is functional. OFF The board is loading software or it is abnormal. ALM ACT Red Green 9.2 LEDs on the DPUc Board There are three LEDs on the DPUc board: RUN, ALM, and ACT. Table 9-2 describes the LEDs on the DPUc board. Table 9-2 LEDs on the DPUc board LED Status Description RUN Green ON for 1s and OFF for 1s The board is functional. ON for 0.125s and OFF for 0.125s The board is in loading state. ON There is power supply, but the board is faulty. OFF Issue 05 (2011-05-19) Color There is no power supply, or the board is faulty. Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. 9-3
  • 158. BSC6900 GSM Site Maintenance Guide 9 LEDs on the Boards LED Color Status Description ALM Red OFF There is no alarm. ON or blinking There is a fault alarm. ON The board is functional. OFF The board is loading software or it is abnormal. ACT Green 9.3 LEDs on the DPUd Board There are three LEDs on the DPUd board: RUN, ALM, and ACT. Table 9-3 describes the LEDs on the DPUd board. Table 9-3 LEDs on the DPUd board LED Color Status Description RUN Green ON for 1s and OFF for 1s The board is functional. ON for 0.125s and OFF for 0.125s The board is in loading state. ON There is power supply, but the board is faulty. OFF There is no power supply, or the board is faulty. OFF There is no alarm. ON or blinking There is a fault alarm. ON The board is functional. OFF The board is loading software or it is abnormal. ALM ACT Red Green 9.4 LEDs on the EIUa Board There are three LEDs on the EIUa board: RUN, ALM, and ACT. Table 9-4 describes the LEDs on the EIUa board. 9-4 Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. Issue 05 (2011-05-19)
  • 159. BSC6900 GSM Site Maintenance Guide 9 LEDs on the Boards Table 9-4 LEDs on the EIUa board LED Color Status Description RUN Green ON for 1s and OFF for 1s The board is functional. ON for 0.125s and OFF for 0.125s The board is in loading state. ON There is power supply, but the board is faulty. OFF There is no power supply, or the board is faulty. OFF There is no alarm. ON or blinking There is a fault alarm. ON The board is in active mode. OFF The board is in standby mode. ALM ACT Red Green 9.5 LEDs on the FG2a Board Among all the LEDs on the FG2a board, RUN, ALM, and ACT indicate the status of the FG2a board, and other LEDs indicate the status of Ethernet ports. There are two LEDs at each Ethernet port: LINK and ACT. Table 9-5 describes the LEDs on the FG2a board. Table 9-5 LEDs on the FG2a board LED Color Status Description RUN Green ON for 1s and OFF for 1s The board is functional. ON for 0.125s and OFF for 0.125s The board is in loading state. ON There is power supply, but the board is faulty. OFF There is no power supply, or the board is faulty. OFF There is no alarm. ON or blinking There is a fault alarm. ON The board is in active mode. OFF The board is in standby mode. ALM ACT Issue 05 (2011-05-19) Red Green Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. 9-5
  • 160. BSC6900 GSM Site Maintenance Guide 9 LEDs on the Boards LED Color Status Description LINK (at the Ethernet port) Green ON The link is well connected. OFF The link is disconnected. ACT (at the Ethernet port) Green OFF There is no data transmission over the Ethernet port. Blinking There is data transmission over the Ethernet port. 9.6 LEDs on the FG2c Board Among all the LEDs on the FG2c board, RUN, ALM, and ACT indicate the status of the FG2c board, and other LEDs indicate the status of Ethernet ports. There are two LEDs at each Ethernet port: LINK and ACT. Table 9-6 describes the LEDs on the FG2c board. Table 9-6 LEDs on the FG2c board LED Color Status Description RUN Green ON for 1s and OFF for 1s The board is functional. ON for 0.125s and OFF for 0.125s The board is in loading state. ON There is power supply, but the board is faulty. OFF There is no power supply, or the board is faulty. OFF There is no alarm. ON or blinking There is a fault alarm. ON The board is in active mode. OFF The board is in standby mode. ON The link is well connected. OFF The link is disconnected. OFF There is no data transmission over the Ethernet port. ALM ACT Red Green LINK (at the Ethernet port) ACT (at the Ethernet port) 9-6 Green Orange Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. Issue 05 (2011-05-19)
  • 161. BSC6900 GSM Site Maintenance Guide LED 9 LEDs on the Boards Color Status Description Blinking There is data transmission over the Ethernet port. 9.7 LEDs on the GCUa Board There are three LEDs on the panel of the GCUa board: RUN, ALM, and ACT. Table 9-7 describes the LEDs on the GCUa board. Table 9-7 LEDs on the GCUa board LED Color Status Description RUN Green ON for 1s and OFF for 1s The board is functional. ON for 0.125s and OFF for 0.125s The board is in loading state. ON There is power supply, but the board is faulty. OFF There is no power supply, or the board is faulty. OFF There is no alarm. ON or blinking There is a fault alarm. ON The board is in active mode. OFF The board is in standby mode. ALM ACT Red Green 9.8 LEDs on the GOUa Board There are three LEDs on the GOUa board: RUN, ALM, and ACT. Table 9-8 describes the LEDs on the GOUa board. Table 9-8 LEDs on the GOUa board LED Status Description RUN Green ON for 1s and OFF for 1s The board is functional. ON for 0.125s and OFF for 0.125s Issue 05 (2011-05-19) Color The board is in loading state. Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. 9-7
  • 162. BSC6900 GSM Site Maintenance Guide 9 LEDs on the Boards LED There is no power supply, or the board is faulty. OFF There is no alarm. There is a fault alarm. ON The board is in active mode. OFF Green There is power supply, but the board is faulty. ON or blinking ACT Description OFF Red Status ON ALM Color The board is in standby mode. 9.9 LEDs on the GOUc Board There are five types of LEDs on the GOUc board: RUN, ALM, ACT, LINK (optical port LED), and ACT (optical port LED). Table 9-9 describes the LEDs on the GOUc board. Table 9-9 LEDs on the GOUc board LED Color Status Description RUN Green ON for 1s and OFF for 1s The board is functional. ON for 0.125s and OFF for 0.125s The board is in loading state. ON There is power supply, but the board is faulty. OFF There is no power supply, or the board is faulty. OFF There is no alarm. ON or blinking There is a fault alarm. ON The board is in active mode. OFF The board is in standby mode. ON The link is well connected. OFF The link is disconnected. ALM ACT LINK (optical port LED) 9-8 Red Green Green Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. Issue 05 (2011-05-19)
  • 163. BSC6900 GSM Site Maintenance Guide 9 LEDs on the Boards LED Color Status Description ACT (optical port LED) Green OFF There is no data transmission over the Ethernet port. Blinking There is data transmission over the Ethernet port. 9.10 LEDs on the MDMC Board There are two LEDs on the MDMC board: RUN and ALM. Table 9-10 describes the LEDs on the MDMC board. Table 9-10 LEDs on the MDMC board LED Color Status Description RUN Green ON for 1s and OFF for 1s The MDMC board is functional and communicates with the SCUa board properly. ON for 0.25s and OFF for 0.25s The MDMC board is not working or it does not communicate with the SCUa board properly. OFF The power supply to the MDMC board is abnormal or the power distribution box does not work properly. OFF There is no alarm. ON The power distribution box is faulty. During the self-check of the MDMC board, however, the ALM LED is also ON. This indicates that the ALM LED is functional. ALM Red 9.11 LEDs on the OIUa Board There are four LEDs on the OIUa board: RUN, ALM, ACT, and LOS. Table 9-11 describes the LEDs on the OIUa board. Table 9-11 LEDs on the OIUa board LED Status Description RUN Issue 05 (2011-05-19) Color Green ON for 1s and OFF for 1s The board is functional. Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. 9-9
  • 164. BSC6900 GSM Site Maintenance Guide 9 LEDs on the Boards LED OFF There is no alarm. There is a fault alarm. ON The board is in active mode. The board is in standby mode. ON The STM-1 port does not receive signals properly. OFF Green There is no power supply, or the board is faulty. OFF LOS There is power supply, but the board is faulty. ON or blinking Green The board is in loading state. OFF ACT Description ON Red Status ON for 0.125s and OFF for 0.125s ALM Color The STM-1 port receives signals properly. 9.12 LEDs on the OMUa/OMUb Board There are five types of LEDs on the OMUa/OMUb board: RUN, ALM, ACT, OFFLINE, and HD. Table 9-12 describes the LEDs on the OMUa/OMUb board. Table 9-12 LEDs on the OMUa/OMUb board LED Color Status Description RUN Green ON for 1s and OFF for 1s The board is functional. ON for 0.125s and OFF for 0.125s The board is being started. ON There is power supply, but the board is faulty. OFF There is no power supply, or the board is faulty. OFF There is no alarm. ON or blinking There is a fault alarm. ON The board is in active mode. OFF The board is in standby mode, or the board is disconnected. ALM ACT 9-10 Red Green Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. Issue 05 (2011-05-19)
  • 165. BSC6900 GSM Site Maintenance Guide 9 LEDs on the Boards LED Color Status Description OFFLINE Blue ON The board can be removed. OFF The board cannot be removed. ON for 0.125s and OFF for 0.125s The board is being switched over to the other working mode. OFF There is no read or write operation on the hard disk. Blinking The hard disk is being read or written. HD Green 9.13 LEDs on the PAMU Board There are two LEDs on the PAMU board: RUN and ALM. Table 9-13 describes the LEDs on the PAMU board. Table 9-13 LEDs on the PAMU board LED Color Status Description RUN Green ON for 1s and OFF for 1s The PAMU board is functional and communicates with the SCUa board properly. ON for 0.25s and OFF for 0.25s The PAMU board is faulty or it does not communicate with the SCUa board properly. OFF The power supply to the PAMU board is abnormal or the power distribution box does not work properly. OFF There is no alarm. ON The power distribution box is faulty. During the self-check of the PAMU board, however, the ALM LED is also ON. This indicates that the ALM LED is functional. ALM Red 9.14 LEDs on the PEUa Board There are three LEDs on the PEUa board: RUN, ALM, and ACT. Table 9-14 describes the LEDs on the PEUa board. Issue 05 (2011-05-19) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. 9-11
  • 166. BSC6900 GSM Site Maintenance Guide 9 LEDs on the Boards Table 9-14 LEDs on the PEUa board LED Color Status Description RUN Green ON for 1s and OFF for 1s The board is functional. ON for 0.125s and OFF for 0.125s The board is in loading state. ON There is power supply, but the board is faulty. OFF There is no power supply, or the board is faulty. OFF There is no alarm. ON or blinking There is a fault alarm. ON The board is in active mode. OFF The board is in standby mode. ALM ACT Red Green 9.15 LEDs on the POUc Board There are four types of LEDs on the POUc board: RUN, ALM, ACT, and LOS. Table 9-15 describes the LEDs on the POUc board. Table 9-15 LEDs on the POUc board LED Color Status Description RUN Green ON for 1s and OFF for 1s The board is functional. ON for 0.125s and OFF for 0.125s The board is in loading state. ON There is power supply, but the board is faulty. OFF There is no power supply, or the board is faulty. OFF There is no alarm. ON or blinking There is a fault alarm. ON The board is in active mode. OFF The board is in standby mode. ON The STM-1 port does not receive signals properly. ALM ACT LOS 9-12 Red Green Green Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. Issue 05 (2011-05-19)
  • 167. BSC6900 GSM Site Maintenance Guide LED 9 LEDs on the Boards Color Status Description OFF The STM-1 port receives signals properly. 9.16 LEDs on the SCUa Board Among all the LEDs on the SCUa board, RUN, ALM, and ACT indicate the status of the SCUa board, and other LEDs indicate the status of Ethernet ports. There are two LEDs at each Ethernet port: LINK and ACT. Table 9-16 describes the LEDs on the SCUa board. Table 9-16 LEDs on the SCUa board LED Color Status Description RUN Green ON for 1s and OFF for 1s The board is functional. ON for 0.125s and OFF for 0.125s The board is in loading state. ON There is power supply, but the board is faulty. OFF There is no power supply, or the board is faulty. OFF There is no alarm. ON or blinking There is a fault alarm. ON The board is in active mode. OFF The board is in standby mode. ON The link is well connected. OFF The link is disconnected. OFF There is no data transmission over the Ethernet port. Blinking There is data transmission over the Ethernet port. ALM ACT Red Green LINK (at the Ethernet port) Green ACT (at the Ethernet port) Green 9.17 LEDs on the TNUa Board There are three LEDs on the TNUa board: RUN, ALM, and ACT. Issue 05 (2011-05-19) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. 9-13
  • 168. BSC6900 GSM Site Maintenance Guide 9 LEDs on the Boards Table 9-17 describes the LEDs on the TNUa board. Table 9-17 LEDs on the TNUa board LED Color Status Description RUN Green ON for 1s and OFF for 1s The board is functional. ON for 0.125s and OFF for 0.125s The board is in loading state. ON There is power supply, but the board is faulty. OFF There is no power supply, or the board is faulty. OFF There is no alarm. ON or blinking There is a fault alarm. ON The board is in active mode. OFF The board is in standby mode. ALM Red ACT Green 9.18 LEDs on the XPUa Board Among all the LEDs on the XPUa board, RUN, ALM, and ACT indicate the status of the XPUa board, and other LEDs indicate the status of Ethernet ports. There are two LEDs at each Ethernet port: LINK and ACT. Table 9-18 describes the LEDs on the XPUa board. Table 9-18 LEDs on the XPUa board LED Color Status Description RUN Green ON for 1s and OFF for 1s The board is functional. ON for 0.125s and OFF for 0.125s The board is in loading state. ON There is power supply, but the board is faulty. OFF There is no power supply, or the board is faulty. OFF There is no alarm. ON or blinking There is a fault alarm. ALM 9-14 Red Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. Issue 05 (2011-05-19)
  • 169. BSC6900 GSM Site Maintenance Guide 9 LEDs on the Boards LED Color Status Description ACT Green ON The board is in active mode. OFF The board is in standby mode. ON The link is well connected. OFF The link is disconnected. OFF There is no data transmission over the Ethernet port. Blinking There is data transmission over the Ethernet port. LINK (at the Ethernet port) Green ACT (at the Ethernet port) Green 9.19 LEDs on the XPUb Board Among all the LEDs on the XPUb board, RUN, ALM, and ACT indicate the status of the XPUb board, and other LEDs indicate the status of Ethernet ports. There are two LEDs at each Ethernet port: LINK and ACT. Table 9-19 describes the LEDs on the XPUb board. Table 9-19 LEDs on the XPUb board LED Color Status Description RUN Green ON for 1s and OFF for 1s The board is functional. ON for 0.125s and OFF for 0.125s The board is in loading state. ON There is power supply, but the board is faulty. OFF There is no power supply, or the board is faulty. OFF There is no alarm. ON or blinking There is a fault alarm. ON The board is in active mode. OFF The board is in standby mode. ON The link is well connected. OFF The link is disconnected. OFF There is no data transmission over the Ethernet port. ALM ACT Red Green LINK (at the Ethernet port) ACT (at the Ethernet port) Issue 05 (2011-05-19) Green Orange Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. 9-15
  • 170. BSC6900 GSM Site Maintenance Guide 9 LEDs on the Boards LED Status Description Blinking 9-16 Color There is data transmission over the Ethernet port. Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. Issue 05 (2011-05-19)
  • 171. BSC6900 GSM Site Maintenance Guide 10 DIP Switches on Components 10 DIP Switches on Components About This Chapter This chapter describes the DIP switches on the boards and subracks of the BSC6900. 10.1 DIP Switch on the Subrack The DIP switch on a subrack is used to set the number of the subrack. 10.2 DIP Switches on the EIUa Board The EIUa board provides five DIP switches, namely, S1, S3, S4, S5, and S6. 10.3 DIP Switch on the MDMC Board The MDMC board provides an S2 DIP switch. 10.4 DIP Switch on the PAMU Board The PAMU provides an SW1 DIP switch. 10.5 DIP Switches on the PEUa Board The PEUa board provides five DIP switches, namely, S2, S4, S6, S8, and S10. 10.6 DIP Switch on the PFCU Board The PFCU board has one DIP switch, which is named SW1 and consists of four bits. The DIP switch is used to set the address of the PFCU board. When the PFCU board is configured in a fan box of the service subrack, the address of the PFCU board is set to 1. When the PFCU board is configured in the independent fan subrack, the address of the PFCU board is set to 4. 10.7 Pins on the PFCB Board The PFCB board provides eight pairs of pins for jumpers. After being connected to jumpers, these pins are used to set the address and working mode of the PFCB board. The settings of these pins depend on the installation position of the PFCB board. Issue 05 (2011-05-19) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. 10-1
  • 172. BSC6900 GSM Site Maintenance Guide 10 DIP Switches on Components 10.1 DIP Switch on the Subrack The DIP switch on a subrack is used to set the number of the subrack. Location of the DIP Switch The DIP switch is located on the lower back of the subrack. For details on the location of the DIP switch, see Components of the Subrack. Appearance Figure 10-1 shows the cover plate for the DIP switch on the subrack. Figure 10-1 Cover plate for the DIP switch on the subrack Description about the DIP Switch The DIP switch on the subrack has eight bits numbered in ascending order from 1 to 8. The higher the bit is, the more significant it is. Table 10-1 describes the bits. 10-2 Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. Issue 05 (2011-05-19)
  • 173. BSC6900 GSM Site Maintenance Guide 10 DIP Switches on Components Table 10-1 Description about the bits Bit Description 1-5 Bits 1 to 5 are used for setting the subrack number. Bit 1 is the least significant bit. If the bit is set to ON, it indicates 0. If the bit is set to OFF, it indicates 1. 6 Odd parity check bit 7 Reserved, undefined, generally set to ON 8 (the most significant bit) Reserved Principle of the DIP Switch Setting As the DIP switch uses odd parity check, the number of 1s in the eight bits must be an odd number. The method for setting the bits is as follows: 1. Set bit 1 to bit 5 as required. 2. Set bit 7 to ON. 3. Note that the setting of bit 8 remains unchanged. 4. Check the number of 1s in the seven bits of the DIP switch. l If the number of 1s is even, set bit 6 to OFF. l If the number of 1s is odd, set bit 6 to ON. Table 10-2 describes the setting of the DIP switch in the case. Table 10-2 Setting of the DIP switch Subr ack No. Bit 1 2 3 4 5 6 7 8 0 0 0 0 0 0 0 0 1 ON ON ON ON ON ON ON OFF 1 0 0 0 0 1 0 1 OFF ON ON ON ON OFF ON OFF 0 1 0 0 0 1 0 1 ON OFF ON ON ON OFF ON OFF 1 1 0 0 0 0 0 1 OFF OFF ON ON ON ON ON OFF 0 0 1 0 0 1 0 1 1 2 3 4 Issue 05 (2011-05-19) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. Setting of the DIP Switch 10-3
  • 174. BSC6900 GSM Site Maintenance Guide 10 DIP Switches on Components Subr ack No. Bit 2 3 4 5 6 7 8 ON ON OF F ON ON OFF ON OFF 1 0 1 0 0 0 0 1 OFF 5 1 ON OF F ON ON ON ON Setting of the DIP Switch OFF 10.2 DIP Switches on the EIUa Board The EIUa board provides five DIP switches, namely, S1, S3, S4, S5, and S6. Figure 10-2 shows the layout of the DIP switches on the EIUa board. Figure 10-2 Layout of the DIP switches on the EIUa board (1) Sub-board 10-4 (2) Bottom plate Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. Issue 05 (2011-05-19)
  • 175. BSC6900 GSM Site Maintenance Guide 10 DIP Switches on Components NOTE l When the 75-ohm coaxial cable is used, the signal transmission uses the E1 unbalanced mode. In this case, the TX end is grounded, that is, the corresponding bit of the DIP switch is set to ON. l When the 120-ohm twisted pair cable is used, the signal transmission uses the E1(T1) balanced mode. In this case, the TX end is not grounded, that is, the corresponding bit of the DIP switch is set to OFF. l All DIP switches of the EIUa board are on the front panel of the sub-board. The front panel is faced to and combined with the bottom plate, and so the DIP switches are hidden in between. Table 10-3 describes the DIP switches on the EIUa board. Table 10-3 Description of the DIP switches on the EIUa board DIP Switch Bit Description Setting for 75ohm Coaxial Cable Setting for 120-ohm Twisted Pair Cable S1 8 Impedance selection switch of E1s/T1s 0-7 ON OFF 7 Impedance selection switch of E1s/T1s 8-15 ON OFF 6 Impedance selection switch of E1s/T1s 16-23 ON OFF 5 Impedance selection switch of E1s/T1s 24-31 ON OFF 1-4 Reserved S3 1-8 TX ground switch of E1s/ T1s 0-7 ON OFF S4 1-8 TX ground switch of E1s/ T1s 8-15 ON OFF S5 1-8 TX ground switch of E1s/ T1s 16-23 ON OFF S6 1-8 TX ground switch of E1s/ T1s 24-31 ON OFF Table 10-4 describes the different DIP switches. Issue 05 (2011-05-19) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. 10-5
  • 176. BSC6900 GSM Site Maintenance Guide 10 DIP Switches on Components Table 10-4 Description of the different DIP switches DIP Switch Description E1/T1 impedance selection switch Used to select the logical transmission mode of the board and to notify the software of the current transmission mode E1/T1 TX ground switch Used to control the grounding of the transmitting end of the E1/T1 signals NOTE l The DIP switches are set for 75-ohm coaxial cables by default. l The setting for the DIP switches on the active board must be the same as that for the DIP switches on the standby board. l The RX end is not grounded either in balanced or in unbalanced mode. 10.3 DIP Switch on the MDMC Board The MDMC board provides an S2 DIP switch. Figure 10-3 shows the layout of the DIP switch on the MDMC board. Figure 10-3 DIP switch on the MDMC board With four bits, the DIP switch S4 is used to set the address of the MDMC board. To set the address, first remove the MDMC board and then set S2 as described in Table 10-5. Table 10-5 DIP switch on the MDMC board Address Setting of DIP Bit Description 0 1 (the most significant bit) ON 0 2 ON 0 3 ON 0 4 (the least significant bit) 10-6 Bit ON 0 Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. Issue 05 (2011-05-19)
  • 177. BSC6900 GSM Site Maintenance Guide 10 DIP Switches on Components NOTE In the BSC6900, the DIP switch on the MDMC board must be set as described in Table 10-5. 10.4 DIP Switch on the PAMU Board The PAMU provides an SW1 DIP switch. Figure 10-4 shows the layout of the DIP switch on the PAMU board. Figure 10-4 Layout of the DIP switch on the PAMU board With four bits, the DIP switch SW1 is used to set the address of the PAMU board. To set the address, first remove the PAMU board and then set the SW1 as described in Table 10-6. Table 10-6 DIP switch on the PAMU board Address Bit Setting of DIP Bit Description 0 1 (the most significant bit) ON 0 2 ON 0 3 ON 0 4 (the least significant bit) ON 0 NOTE In the BSC6900, the DIP switch on the PAMU board must be set as described in Table 10-6. 10.5 DIP Switches on the PEUa Board The PEUa board provides five DIP switches, namely, S2, S4, S6, S8, and S10. Figure 10-5 shows the layout of the DIP switches on the PEUa board. Issue 05 (2011-05-19) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. 10-7
  • 178. BSC6900 GSM Site Maintenance Guide 10 DIP Switches on Components Figure 10-5 Layout of the DIP switches on the PEUa board (1) Sub-board 10-8 (2) Bottom plate Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. Issue 05 (2011-05-19)
  • 179. BSC6900 GSM Site Maintenance Guide 10 DIP Switches on Components NOTE l All DIP switches are on the front panel of the sub-board. The front panel is combined with the bottom plate, so the DIP switches are not exposed. l DIP switches S2, S4, S6, S8, and S10 are set from the side. As shown in Figure 10-5, there are two square holes between DIP switches, one between S2 and S4, and the other between S8 and S6. Through the two holes, you can set S2, S4, S8, and S6. DIP switch S10 is located in the right corner of the subboard, and thus you can set S10 along the side.The direction of the arrow in Figure 10-5 is to turn inwards. To set the bits of S2, S4, S6, or S8 to ON, turn them inwards. To set the bits of S2, S4, S6, or S8 to OFF, turn them outwards. To set the bits of S10 to ON, turn them outwards. To set the bits of S10 to OFF, turn them inwards. l You can also run the SET E1T1 command on the LMT to set S10. If there is any inconsistency between the physical setting of S10 on the PEUa board and the setting of S10 by command, take the setting by command as the criterion. By default, the working mode of S10 is set to E1. You can also run the SET E1T1 command on the LMT to change the working mode of S10 from E1 mode to E1 balanced mode, E1 unbalanced mode, or T1 mode. When you run the SET E1T1 command to set the support for balanced and unbalanced modes parameter to No and set the working mode of S10 to E1, you must also manually set the bits of S10 to set the working mode of S10 to E1 balanced mode or E1 unbalanced mode. l If signals are transmitted in E1 unbalanced mode, the signals are transmitted through the 75-ohm coaxial cable and the TX end of the cable is grounded, that is, the corresponding DIP bit is set to ON. If signals are transmitted in E1(T1) balanced mode, the signals are transmitted through the 120-ohm twisted pair cable and the TX end of the cable is not grounded, that is, the corresponding DIP bit is set to OFF. DIP switches S2, S4, S6, and S8 on the PEUa board are used to enable or disable the grounding of 0 to 31 E1s/T1s/J1s at the TX end. DIP switch S10 is used to set the working mode to E1 balanced mode, E1 unbalanced mode, T1 mode, or J1 mode. Table 10-7 describes S2, S4, S6, S8, and S10. Table 10-7 Description about DIP switches on the PEUa board DIP Switc h Bit Description Setting of DIP Switch Meaning S2 1-8 TX ground switch of E1s/T1s/J1s 24 to 31 ON Setting the working mode to E1 unbalanced mode OFF Setting the working mode to other modes ON Setting the working mode to E1 unbalanced mode OFF Setting the working mode to other modes ON Setting the working mode to E1 unbalanced mode S4 S6 Issue 05 (2011-05-19) 1-8 1-8 TX ground switch of E1s/T1s/J1s 16 to 23 TX ground switch of E1s/T1s/J1s 0 to 7 Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. 10-9
  • 180. BSC6900 GSM Site Maintenance Guide 10 DIP Switches on Components DIP Switc h Setting the working mode to E1 unbalanced mode Setting the working mode to other modes (ON, ON) Setting the working mode to E1 unbalanced mode Setting the working mode to E1 balanced mode Setting the working mode to T1 mode (OFF, OFF) DIP switch for setting the working mode, consisting of two bits ON (ON, OFF) 1-2 Setting the working mode to other modes (OFF, ON) S10 TX ground switch of E1s/T1s/J1s 8 to 15 Meaning OFF 1-8 Description Setting of DIP Switch OFF S8 Bit Setting the working mode to J1 mode NOTE All the DIP switches are set to E1 balanced mode by default, that is, all the bits of S2, S4, S6, and S8 are set to OFF. For S10, the first bit is set to OFF, and the second bit to ON. 10.6 DIP Switch on the PFCU Board The PFCU board has one DIP switch, which is named SW1 and consists of four bits. The DIP switch is used to set the address of the PFCU board. When the PFCU board is configured in a fan box of the service subrack, the address of the PFCU board is set to 1. When the PFCU board is configured in the independent fan subrack, the address of the PFCU board is set to 4. DIP Switch on the PFCU Board (in a Fan Box of the service subrack) Figure 10-6 shows the DIP switch on the PFCU board. 10-10 Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. Issue 05 (2011-05-19)
  • 181. BSC6900 GSM Site Maintenance Guide 10 DIP Switches on Components Figure 10-6 DIP switch on the PFCU board To set the address of the PFCU board, remove the fan box, and then set SW1 as described in Table 10-8. For how to remove the fan box, see 7.21 Replacing the Fan Box. After setting the DIP switch, the address of the PFCU board is 1. Table 10-8 DIP switch on the PFCU board (in a fan box of the service subrack) DIP Switch Bit Setting of DIP Switch Description SW1 1 (the least significant bit) OFF 1 2 ON 0 3 ON 0 4 (the most significant bit) ON 0 DIP Switch on the PFCU Board (in the Independent Fan Subrack) Figure 10-7 shows the DIP switch on the PFCU board. Figure 10-7 DIP switch on the PFCU board To set the address of the PFCU board, remove the fan box, and then set SW1 as described in Table 10-9. For how to remove the fan box, see 7.21 Replacing the Fan Box. After the setting, the address of the PFCU board is 4. Issue 05 (2011-05-19) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. 10-11
  • 182. BSC6900 GSM Site Maintenance Guide 10 DIP Switches on Components Table 10-9 DIP switch on the PFCU board (in the independent fan subrack) DIP Switch Bit Setting of DIP Switch Description SW1 1 (the least significant bit) ON 0 2 ON 0 3 OFF 1 4 (the most significant bit) ON 0 NOTE The DIP switch on the PFCU board of the BSC6900 must be set according to the preceding descriptions. 10.7 Pins on the PFCB Board The PFCB board provides eight pairs of pins for jumpers. After being connected to jumpers, these pins are used to set the address and working mode of the PFCB board. The settings of these pins depend on the installation position of the PFCB board. Pins on the PFCB Board (in a Fan Box of the service subrack) Figure 10-8 shows the pins on the PFCB board. Figure 10-8 Pins on the PFCB board To set the address of the PFCB board, first remove the fan box and then set the pins as described in Table 10-10. Table 10-10 Pins on the PFCB board (in a fan box of the service subrack) Pin Numb er 3-4 5-6 7-8 9-10 11-12 13-14 15-16 Connec ted to jumper 10-12 1-2 No No No No Yes No No No Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. Issue 05 (2011-05-19)
  • 183. BSC6900 GSM Site Maintenance Guide 10 DIP Switches on Components Pins on the PFCB Board (in the Independent Fan Subrack) Figure 10-9 shows the pins on the PFCB board. Figure 10-9 Pins on the PFCB board To set the address of the PFCB board, first remove the fan box and then set the pins as described in Table 10-11. Table 10-11 Pins on the PFCB board (in the independent fan subrack) Pin Numb er 1-2 3-4 5-6 7-8 9-10 11-12 13-14 15-16 Connec ted to jumper No No No No No No Yes No NOTE The pins on the PFCB board of the BSC6900 must be set according to the preceding descriptions. Issue 05 (2011-05-19) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. 10-13
  • 184. BSC6900 GSM Site Maintenance Guide 11 11 BSC6900 Site Maintenance Record BSC6900 Site Maintenance Record This chapter describes the BSC6900 site maintenance record. Table 11-1 presents the BSC6900 site maintenance record. Table 11-1 BSC6900 site maintenance record Site name: Maintenance Date: Time of fault occurring: Time of fault clearing: Person on duty: Operator: Maintenance type □ Replacing a board □ Replacing a cable □ Replacing the subrack, fan box, or power distribution box □ Routine cleaning □ Expanding the subrack or SPM □ Others Maintenance operations: Commissioning result: Issue 05 (2011-05-19) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. 11-1

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