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.
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 |
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|
AirPort Extreme/Bluetooth antenna | AirPort/Bluetooth radio signals |
assembly |
|
(in display housing to diversity board) |
|
|
|
AirPort Extreme antenna cable extension | AirPort radio signal |
(to AirPort card cage) |
|
|
|
AirPort Extreme Flex (to logic board) | AirPort data / power |
|
|
Ambient Light Sensor (Left) cable | Light data from left side |
|
|
Bluetooth cable (to | Bluetooth data/power |
|
|
Blower, left cable (to logic board) | Power/control for left blower |
|
|
Blower, right cable (to logic board) | Power/control for right blower |
|
|
Hard drive flex (to logic board) | Hard drive control, data, and power |
|
|
Inverter cable (from display panel) | High voltage for backlight |
|
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Inverter/antenna cable (to logic board and | Display backlight control |
wireless modules) | AirPort radio signal |
| Bluetooth radio signal |
|
|
Keyboard backlight cable (on top case) | Power to keyboard backlight LEDs |
|
|
Keyboard flex (from keyboard) | Keyboard data and status lines |
|
|
LVDS cable (from display housing) | Video data to display panel |
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General Information | PowerBook G4 |
