Replacing the microprocessor (Types 7387, 7388, and 7389)
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. Rotate handle 1 to release the heat sink clamp and then disengage the
clamp from the plastic retention bracket.
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.
6. Lift the small handle 1.
104 Lenovo 3000 J Series