Lenovo E100 Hardware Maintenance Manual - Page 100
Replacing, system, board
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Replacing the system board Note: When replacing the system board a new retention module for the 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. 94 Lenovo 3000 E100