Lenovo M57e - ThinkCentre - 9481 Hardware Maintenance Manual page 86

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. On the new system board, release the lever securing the microprocessor 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.
18. Holding the microprocessor with your fingers, position the microprocessor so 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.
19. Lower the microprocessor straight down into the system board socket of the new system board.
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ThinkCentre Hardware Maintenance Manual