Replacing The System Board - Lenovo E100 Hardware Maintenance Manual

Replacing the system board

Note: When replacing the system board a new retention module for the
94
Lenovo 3000 E100
microprocessor heat sink is required. Make sure you have a new retention
module before beginning this procedure.
1. Remove both side covers. See "Removing the covers" on page 86.
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 89.
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 85.
5. Remove the screws that secure the system board to the chassis.
6. Lift the system board out of the chassis.
7. Remove the memory modules from the failing system board and install them
in the same location on the new system board.
8. Remove the four screws 1 securing the heat sink and fan assembly to the
system board.
9. 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 come in contact with
anything.