Replacing The Microprocessor - Lenovo ThinkCentre 8290 Hardware Maintenance Manual

17. Lower the microprocessor retainer.
18. Lock the retainer with the small handle to secure the microprocessor in the
19. The new retention bracket has an adhesive surface to attach it to the new
20. Reinstall the heat sink on the microprocessor by aligning the screws with the
21. Reconnect the heat sink and fan assembly cable to the system board. See
22. Install the new system board into the chassis and align the screw holes with
23. Reconnect all disconnected cables to the system board.
24. Replace the hard disk drive. See "Replacing the hard disk drive" on page 131.
25. Install the drive bay assembly and connect the power and signal cables to the
26. Reinstall any PCI adapter cards that were removed. See "Replacing a PCI
27. Replace the fan duct on the microprocessor fan.
28. Go to "Completing the FRU replacement." on page 135.

Replacing the microprocessor

Note: The new microprocessor is shipped with a new heat sink. Make sure to use
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Hardware Maintenance Manual
socket.
system board. The adhesive surface is protected by a peel-off film. To install
the new retention bracket, peel off the film, push the posts through the holes
in the system board until secure against the board.
screw holes in the retention bracket. Tighten the four screws that secure the
heat sink and fan assembly to the system board.
"Identifying parts on the system board (Types 8293, 8294, and 8295" on page
114 or "Identifying parts on the system board (Types 9217, 9218, and 9219" on
page 115.
those in the chassis. Insert and tighten the screws the were removed
previously.
drives.
adapter" on page 118.
the new heat sink when installing the new microprocessor.
1. Remove the cover. See "Removing the cover" on page 112.
2. Lift the fan duct off the microprocessor fan.