Lenovo M57e - ThinkCentre - 9481 Hardware Maintenance Manual page 88

5. Lift the heat sink and fan assembly off the system board. Place the heat sink on its side so that the
thermal grease does not come in contact with anything.
Note: You might have to gently twist the heat sink to free it from the microprocessor.
6. To remove the microprocessor
Important: Touch only the sides of the microprocessor. Do not touch the gold contacts on the bottom.
7. Lift the microprocessor straight up and out of the socket.
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ThinkCentre Hardware Maintenance Manual
2 from the system board, lift the small handle 3 and open the retainer 1 .