IBM ThinkCentre 8105, Hardware Replacement Manual

Page: 20 / 38

17. Lower the microprocessor retainer
1
and then lower the lever
3
to secure
the retainer. Make sure the lever is securely locked into position.
Note: There will be a black plastic cover on the microprocessor retainer to
protect the socket on the new system board. When you lock the
microprocessor in position, remove the cover. Place the black cover on
the microprocessor retainer of the failing system board.
18.
Install the new system board and tray into the rear of the chassis until it is
fully seated.
19. Place the heat sink
1
into position and lower the lever
2
to secure the heat
sink.
20. Reinstall the memory modules on the new system board in the same location
as they were on the failing system board. See “Replacing a memory module”
on page 20.
21. Reconnect all cables that were disconnected from the system board. See
“Identifying parts on the system board” on page 4.
22. Reinstall the PCI riser that was removed. See “Replacing a PCI adapter” on
page 22.
23.
Reinstall the rear fan bracket assembly and connect the fan cable to the system
board.
24. Go to “Completing the parts replacement” on page 26.
12
Hardware Replacement Guide