Lenovo ThinkCentre M55 User Manual download pdf (Page 22)

16. On the new system board, release and pivot the locking lever, then pivot the

microprocessor retainer until it is open.

Note: There will be a black plastic cover on the retainer to protect the

microprocessor socket. Remove the black plastic cover and place it on the

microprocessor socket of the defective system board.

17. Position the microprocessor so that the notches on the microprocessor are

aligned with the tabs in the microprocessor socket.

Important

To avoid damaging the microprocessor contacts, do not tilt the

microprocessor when installing it into the socket.

18. Lower the microprocessor straight down into the microprocessor socket.

14 Hardware Replacement Guide

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Lenovo ThinkCentre M55 User Manual Page 22