Replacement Procedure

Note: If replacing the top case, remove the keyboard and transfer it to the replacement top case.

1.Verify the thermal pad shown here is in place. If not, check whether it is stuck under the removed top case and replace. If not, install a new pad.

2.Visually check to verify that all cables (highlighted below) are connected and routed correctly with nothing raised up or incorrectly over a component.

Top Case

PowerBook G4 (17-inch) Take Apart - 19

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Apple Powerbank G4 manual Replacement Procedure