The document outlines the process for removing and upgrading system boards from servers. It involves: 1. Twitter technicians removing 20-40 servers from racks and handing them off to onsite technicians daily. 2. Technicians removing the system boards from the server chassis, packing them for shipment, and a carrier picking them up for rework to upgrade capacitors. 3. Once reworked, the system boards are shipped back and reinstalled into the server chassis by technicians. The servers then undergo power testing and are returned to Twitter.

2. Overview
Remove system boards together with all
internal components
Send boxed board offsite for rework.
Reinstall system boards into chassis upon
return.
Daily Volumes 20 or 40

3. Work Stream Overview
1. Twitter removes 20 to 40 servers from
racks and hands off to Onsight technician.
2. Technicians removes system boards from
server chassis.
3. Technicians pack system boards for
shipment.
4. Carrier pick up from Twitter arrives at
Data Center to exchange motherboards

4. Workstation

5. Phase 1
Power Testing
De-install System board
Packaging and Shipping of System
board

6. Servers given from Twitter, ready to
dismantle

7. Power Testing Server Units

8. System board in anti-static bag ready to be
packaged and sent for rework

9. Phase 2
System board Exchange

10. System boards packaged and ready for shipment
to be reworked with capacitor upgrades

11. Reworked System board Exchange

12. Phase 3
System board to Chassis Assembly
and Power Tests

13. Reworked system boards received and ready to
re-install system boards back into chassis

14. Rack of server chassis awaiting installation of
reworked system boards

15. Re-Installation of Reworked system boards and
servers ready for power testing

16. Phase 4
BIOS Testing and Return upgraded
units back to Twitter

17. Power Testing Server Units after Re-install

18. BIOS Test: The final process before returning
Servers to Twitter

19. BIOS
(HP PROLIANT)

20. Updated Servers ready for Server racks

21. 1000 of 3000 Servers Completed

22. Troubleshooting and Diagnostic Testing of
problems we had during the process of
completing the project

23. Power Failure

24. System board failure

25. Broken Heat Sink

26. Tear-down process of swapping components
from defective system boards to a new one

27. Removing CPU for Motherboard swap

28. CPU Swap from defective system board

29. System board returned with bad heat sink

30. Fun Fact
I used this single Torx screwdriver to de-install,
Re-install 800 motherboards in a four month
duration