Lenovo ThinkCentre 8700 Hardware Maintenance Manual page 106

16. On the new system board, release the lever securing the microprocessor
17. Holding the microprocessor with your fingers, position the microprocessor so
18. Lower the microprocessor straight down into the system board socket of the
19. To secure the microprocessor in the socket, close the microprocessor retainer
20. Install the retention module for the heat sink and fan assembly on the system
21. Install the heat sink and fan assembly on the new system board.
22. Reconnect the heat sink and fan assembly cable to the system board. See the
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Hardware Maintenance Manual
b. Do not drop anything onto the microprocessor socket while it is exposed.
The socket pins must be kept as clean as possible.
retainer and then pivot the retainer until it is fully open.
Note: There will be a black plastic cover on the microprocessor retainer to
protect the socket on the new system board. Remove the black plastic
cover and place it on the microprocessor socket of the failing system
board when you complete this procedure.
that the notches on the microprocessor are aligned with the tabs in the
microprocessor socket on the new system board.
Important
To avoid damaging the microprocessor contacts, do not tilt the
microprocessor when installing it into the socket.
new system board.
and lock it into position with the small handle.
board.
system board illustration for your machine type at "Identifying parts on the
system board" on page 89.