Replacing The Microprocessor (Types 7393, 7394, And 7395) - Lenovo 3000 J 7387 Hardware Maintenance Manual

Replacing the microprocessor (Types 7393, 7394, and 7395)

Note: A thermal grease syringe is required to complete the microprocessor
100
Lenovo 3000 J Series
installation. Make sure the grease syringe is available before beginning the
procedure. The FRU number for the thermal grease is 91P8835.
1. Remove the left-side cover. See "Removing the covers" on page 84.
2. Lay the computer on the right side to make the system board and
microprocessor accessible.
3. Disconnect the heat sink and fan assembly cable from the system board. See
"Identifying parts on the system board" on page 87.
4. Remove the four 1 screws securing the heat sink and fan assembly to the
system board. Notice that there is a retention bracket on the back side of the
system board.
5. Lift the heat sink and fan assembly off the failing system board. Lay the heat
sink on its side so that the thermal grease does not touch anything.