This document discusses maintaining and troubleshooting peripheral devices. It outlines common issues with display devices like monitors being dark or flickering, as well as solutions like checking for power problems or refresh rate issues. Input device issues covered include keys sticking on keyboards or mice not working, and maintenance techniques like cleaning debris. Adapter card troubleshooting is also addressed, such as cards working in some slots but not others. The objectives are to learn how to troubleshoot these peripheral devices and their common problems.

1. Maintaining And
Troubleshooting
Peripheral Compound

2. In this session, you will learn to:
 Troubleshoot display devices
 Maintain and troubleshoot input
devices
 Troubleshoot adapter cards
 Troubleshoot multimedia devices
Objectives

3. The common display device issues are:
1. Monitor is dark or power indicator light is not lit.
Troubleshooting Display Devices
Power problem

4. 2. No image displayed on the monitor.
Troubleshooting Display Devices
Checked
Disconnected

5. 3. Monitor flickers or is distorted.
Troubleshooting Display Devices
Incorrect display adapter may be used.
Safe mode and verify through Device Manager
Refresh rate may be
too low or too high
Degauss(demagnetize) the monitor

6. 3. Monitor turns itself off.
Troubleshooting Display Devices

7. 4.Application problem
Screen goes blank, flickers, or acts bizarrely when a specific
application is active.
Troubleshooting Display Devices
You may need to change the
resolution
or color depth from display
settings

8. 5. Monitor is on, but display is all white.
Troubleshooting Display Devices
Multiple bent or broken pins

9. 6. Monitor crackles or whines.
Crackles- making sharp sound like burning.
Whines- annoying crying voice.
Troubleshooting Display Devices
Move the monitor away
from sources of EMI

10. 8.Physical damage, internal or external.
Troubleshooting Display Devices
It is generally more economical
and certainly safer to replace
the device rather than attempting repair.

11. Before maintaining and troubleshooting
input devices, you need to understand the
following:
 Common input device issues
 Input device maintenance techniques
Maintaining and Troubleshooting
Input Devices

12. The keyboard issues are:
1. Keys stick.

13. 2. User with physical limitations is currently unable to
use the standard keyboard.

14. 3.No input is sent when keys are pressed.

15. 4. Keyboard-related message or beep codes given during
computer boot.
Replace the keyboard

16. 5. Wrong characters are displayed on the screen when user
inputs information.

17. 6. Multimedia buttons not working properly.

18. 7. New keyboard won’t plug into the same port as the old
keyboard.

19. The pointing device issues are:
1. Mouse pointer jumps around on the screen.

20. 2. Wireless mouse is in use and mouse pointer is
jumping around or not moving.

21. 3. Mouse is not working.
Mouse connected after
the computer was
started.

22. The various techniques for input device maintenance
are:
Occasionally disconnect keyboards and mice and gently
wipe them clean.

23. The various techniques for input device maintenance
are:
Clean loose debris from inside a trackball or mouse.

24. The various techniques for input device maintenance
are:
Gently shake an upside-down keyboard to remove
debris.

25. The various techniques for input device maintenance
are:
Provide a clean, flat mouse pad or other mousing
surface.

26. The various techniques for input device maintenance
are:
To avoid spills that can damage input devices, keep food
and liquids away from computer systems.

27. The various techniques for input device maintenance
are:
Replace cordless device batteries regularly.

28. The common adapter card issues are:
1. Adapter seems to work fine until you replace the
system case.
Troubleshooting Adapter Cards

29. 2. Card works fine in another slot, but not in particular slot.

30. 3. Card tests fine and slot tests fine, but services are
unavailable.
Connected the Cable needed

31. 4. Services provided by the adapter or a device connected
to the adapter work intermittently.
Correct driver

32. The common multimedia device issues are:
1. No sound when speakers worked fine before.
Troubleshooting Multimedia Devices

33. 2. No sound when speakers never worked.
Drivers are not installed or are corrupt

34. 3. Microphone not working.
Connection
Volume

35. Summary
In this session, you learned that:
 Following are the common display device issues:
 Power issue.
 Connection or settings issue.
 Driver, magnetism, or interference issue.
 Color quality or resolution issue.
 Following are the input device maintenance techniques:
 Clean loose debris from inside a trackball or mouse.
 Gently shake an upside-down keyboard to remove debris.
 Following are the common adapter card issues:
 Card will not work in one slot.
 Card and slot test fine, but services unavailable.