Apple G4 (12-INCH DVI)

PowerBook G4 (12-inch) Take Apart - 35

Hall Effect Sensor Board and Cable: PowerBook G4

Hall Effect Sensor Board and

Cable: PowerBook G4 (12-inch

DVI)

Tools

This procedure requires the following tools:

• Phillips #0 screwdriver

• Black stick (or other nonconductive nylon or plastic flat-blade tool)

Part Location

Preliminary Steps

Before you begin, remove the following:

• Battery

• Memory door and memory card

• Keyboard

• Top case

Contents

Main Page General Information Overview Model Differences Tools Pictures in this Chapter Page Battery Page Feet Preliminary Step Tools Page Page Memory Door and Memory Card Page Page AirPort Extreme Card Page Page Page Page Keyboard Page Page Page Page Page Page Top Case Page Page Page Page Page Page Page Reed Switch Board and Cable: Page Page Page Hard Drive Page Page Page Modem Page Page Page DC-to-DC Board Page Page Page Page Heatsink and Fan Assembly: Page Page Page Page Heatsink: PowerBook G4 (12-inch DVI) Page Page Page Page Inner Frame: PowerBook G4 (12-inch) Page Page Page Page Page Page Page Page Page Inner Frame: PowerBook G4 (12-inch DVI) Page Page Page Page Page Page Page Page Page RJ11 Modem Board and Cable: Page Page RJ11 Modem Board and Cable: PowerBook G4 (12-inch DVI) Page Page Fan: PowerBook G4 (12-inch DVI) Page Page Sleep Light Page Logic Board Page Page Page Page Page DC-In Board Page Page Optical Drive Page Page Page Page Page Bluetooth Page Subwoofer Page Page Display Module Page Page Page Page Page Page Page Bottom Case Page Display Housing Page Page Page Page Page Page LCD Panel Page Page Page Inverter Board (and Antenna Cable Assembly) Page Page Page Page Page Page Page Display Bezel Page Page Symptom Charts AirPort communication erratic AirPort Extreme Card not recognized AirPort Extreme Card Battery Battery won't charge completely Battery won't charge Error Beeps Computer beeps four times at startup Computer beeps three times at startup Computer beeps once at startup Hard Drive Hard drive will not initialize No response from any key on keyboard Keyboard The internal hard drive does not spin Modem No modem dial tone The optical drive does not accept CD or DVD disc (mechanical failure) Optical Drive Ports FireWire or USB port not recognizing devices; or device not recognized by computer Sound Distorted sound from speakers No sound from speaker(s) Startup The computer will not power on The computer freezes during startup or a ashing question mark appears Display No display, or dim display, but computer appears to operate correctly Video (S-Video and Composite adapter) Display shows ghosting (signal reection) The display is rolling (PAL instead of NTSC) No video on an external device Video (RGB adapter) Bluetooth Misc. Symptoms The computer runs with battery, but not with the power adapter plugged into wall outlet The computer runs when plugged into a wall outlet but not on battery power The cursor does not move when you are using trackpad The microphone is not working The cursor intermittently does not move or moves erratically The latching mechanism that holds the display closed is not working Page Page PowerBook G4 (12-inch) Views - 1 Main Exploded View: PowerBook G4 (12-inch) 2 - PowerBook G4 (12-inch) Views Display Exploded View: PowerBook G4 (12-inch) PowerBook G4 (12-inch) Views - 3 Main Exploded View: PowerBook G4 (12-inch DVI) 4 - PowerBook G4 (12-inch) Views Display Exploded View: PowerBook G4 (12-inch DVI)