Replacing The System Board (Types 7387, 7388, And 7389) - Lenovo 3000 J 7387 Hardware Maintenance Manual

Replacing the system board (Types 7387, 7388, and 7389)

10. Lift the heat sink and fan assembly off the failing system board. Lay the heat
1. Remove only the left-side cover. See "Removing the covers" on page 84.
2. Lay the computer on the right side to make the system board accessible.
3. Remove any adapter cards installed in the PCI connectors. See "Replacing a
PCI adapter" on page 91.
4. Carefully take note of the location of all cable connections on the system
board and disconnect all cables. See "Identifying parts on the system board"
on page 87.
5. Remove the screws that secure the system board to the chassis.
6. Lift the system board out of the chassis.
7. Remove the retention module from the rear of the failing system board.
8. Remove the memory modules from the failing system board and install them
in the same location on the new system board.
9. Rotate handle 1 to release the heat sink clamp and then disengage the
clamp from the heat sink and fan assembly.
sink on its side so that the thermal grease does not come in contact with
anything.
Chapter 8. Replacing FRUs (Types 7387, 7388, 7389, 7393, 7394, and 7395)
97