5.Install the replacement DC-in board, and reassemble the computer.

Note: Insert a black stick into the USB port opening to guide the board into place.

6.Testing the computer should include using Bluetooth to connect to another computer. Check the function of the modem port, DC-in port and the left USB port.

DC-In Board

PowerBook G4 (17-inch) Take Apart - 69

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Apple Powerbank G4 manual