Replacing The Microprocessor; Types 8702, 8706, 8970, 8972, 8980, 8982, 8992, 8994, 9276, 9278, 9286, 9288, 9378, 9380, 9628, 9632, And 9649 - Lenovo ThinkCentre 8700 Hardware Maintenance Manual

Replacing the microprocessor

The procedure to replace the microprocessor varies depending upon the machine
type.
Types 8702, 8706, 8970, 8972, 8980, 8982, 8992, 8994, 9276,
9278, 9286, 9288, 9378, 9380, 9628, 9632, and 9649
Important
The heat sink and microprocessor might be very hot. Make sure these
components are cool enough to safely handle before continuing this
procedure.
1. Remove the cover. See "Removing the cover" on page 87.
2. Lift the fan duct off the heat sink fan.
3. Disconnect the heat sink and fan assembly cable from the system board. See
the system board illustration for your machine type at "Identifying parts on
the system board" on page 89.
4. Remove the four screws securing the heat sink and fan assembly to the system
board.
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 2 from the system board, lift the small handle
3 and open the retainer 1 .
Chapter 8. Replacing FRUs (desktop computers)
105