Apple Powerbank G4 Wire and Flex Cables, Cable or Flex Cable Name Signals Running Through It

General Information

Wire and Flex Cables

With the very thin enclosure design and dispersed circuit board, a large number of flex cables are used in this computer. In addition, there are a variety of wire cable harnesses as well. Many of these cables carry multiple types of signals. In the case of the DC-in board flex cable; the cable is forked with one path going to the Bluetooth board and the other to the DC-in board.

Here is a list of the cables and the signals that run across them. If you notice a group of functions not working, it is likely that the cable is not properly inserted or the connector is damaged.

Cable or Flex Cable Name	Signal(s) Running Through It
Bluetooth antenna cable (to diversity	Bluetooth radio signal
board in display panel assembly)
AirPort Extreme antenna cable (to	AirPort radio signal
diversity board in display panel assembly)
AirPort Extreme antenna jumper	AirPort radio signal
AirPort Extreme flex cable	AirPort data / control
Sound board flex cable	Sound in
	Sound out
	Internal speaker
	Internal microphone
	Sleep light
Speaker assembly cable	Left speaker
	Right speaker
	Internal microphone
DC-in board cable (to logic board)	Power to system and main battery
DC-in board flex cable	Bluetooth data
	Left USB connector
	Left ambient light sensor
Fan (left) cable (to logic board)	Power/control for left fan

General Information PowerBook G4 (17-inch) Troubleshooting - 1