Lenovo 7848, Hardware Maintenance Manual

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12.
Lower the microprocessor retainer.
13. Lock the retainer with the small handle to secure the microprocessor in the
socket.
14. The new retention bracket has plastic one-way rings on the posts that insert
into the rear of the new system board. Install the new retention bracket by
aligning the posts on the module with the holes in the system board and
pushing the posts through the holes until the retention bracket is secure.
15. Install the heat sink and fan assembly on the new system board.
16. Install the new system board into the chassis and align the screw holes with
those in the chassis. Insert and tighten the screws that secure the system
board.
17.
Connect all the cables to the system board. See “Identifying parts on the
system board” on page 85.
18. Go to “Completing the FRU replacement” on page 107.
Chapter 8. Replacing FRUs (Type 7848)
103