For access, remove these FRUs in order:
Remove the ac power jack cable (a).
When installing: Make sure the connectors are attached firmly.
Remove the CPU support plate.
When installing: When attaching the system board to the frame, adjust the placement with the small projection (a). Then secure the system board with the screws.
In step (10), remove the system board and the PC Card/ExpressCard slots assembly from the structure frame together.
In step (11) and (12), remove IEEE 1394 sub card.