Apple FW800 manual Cable or Flex Cable Name Signals Running Through It

Cable or Flex Cable Name	Signal(s) Running Through It
Main battery cable	Connects main battery to logic board
Modem flex (to logic board)	Modem control and data
Optical drive flex (to logic board)	Optical data, power, and control signals
PC Card cage flex (to logic board)	PC card data and power
Power Button cable	Power-on signal
RJ-11 cable (to modem)	Analog phone signal
Right USB flex	Right USB signal and power
Sleep LED cable (to logic board)	Power to sleep LED
Sound/DC-in board flex (to logic board)	Bluetooth data
	Left USB connector
	Left ambient light sensor
	Digital audio in/out
Sound/DC-in board cable harness	Power to system and main battery
(to logic board)
Speaker assembly wire harness	Left speaker
	Right speaker
	Mid range speaker
	Internal microphone
Trackpad flex	Trackpad data and power
	Power on button
	Keyboard backlight power

2 - PowerBook G4 (15-inch FW800) Troubleshooting General Information