2.To remove the right ambient light sensor, remove the two screws, then lift up on the ambient light sensor board to disconnect it from the logic board (the connector is on the bottom of the board).

Note: The sensor assembly consists of two pieces: the sensor board and a lens cover.

Replacement Note: Assemble the replacement sensor board and lens cover before installation.

70 - PowerBook G4 (15-inch FW800) Take Apart

Ambient Light Sensor Boards

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Apple FW800 manual