Apple Powerbank G4 guide

2. Turn the computer over. Disconnect the cables shown.

3. Remove the twelve screws.

72 - PowerBook G4 (17-inch) Take Apart

Logic Board

Image 74

Apple Powerbank G4 manual

Contents

 Service Source PowerBook G4 17-inch  Service Source Take Apart Overview New ProceduresGeneral Information Important Notes Tools Serial Number Location Zero Insertion Force Connectors To release the ﬂex cable To connect a ﬂex cable Battery Part Location Preliminary Steps Procedure Memory Door Memory Cards Procedure Page Page Page Page Top Case Part Location Preliminary Steps Page Page Page Replacement Procedure Page Page Page Page Page Page Page Page Page Page Page Page Keyboard Procedure Page Page Page Replacement Procedure Page Page Page Hard Drive Procedure Page Sound Board Procedure Page SuperDrive Procedure Page Backup Battery Board Procedure Modem Procedure PC Card Cage AirPort Extreme Assembly Procedure Page Page Page Page Bluetooth Procedure Page Speakers Procedure Page DC-In Board Procedure Page Page Logic Board Preliminary Steps Page Page Replacement Procedure Page Page Page Page Page Page Page Display Panel Assembly Procedure Page Page Page Page Replacement Procedure Page Page Page Page Page Page Heatsink and Fan Assembly Procedure Bottom Case Assembly Procedure  Service Source Troubleshooting Wire and Flex Cables Cable or Flex Cable Name Signals Running Through It Cable or Flex Cable Name Signals Running Through It Potential ﬂex cable and connector issues ZIF connector locking Bar Broken connectors on the ﬂex cable Cable is not secured straight Cables nicked or crimped Apple Hardware Test 2.0.1 AHT Hardware Troubleshooting Tools and TipsApple Service Diagnostic ASD General Information PowerBook G4 17-inch Troubleshooting Resetting the Power Manager Unit PMU Power-on pads on logic board PMU NMI and PMU Reset pads on logic board Caps lock LED power check Customer forgot password Software Troubleshooting Tips and ToolsLogin window and account Safe Mode Knowledge Base Articles Hardware Symptom Charts How to Use the Symptom Charts Power Adapter Note Startup Page Prohibitory Sign Kernel Panic dialog box Flashing question mark appears on the screen System shuts down intermittently System shuts down almost immediately after startup Computer beeps once at startup Error BeepsApplication Quits, Kernel panic or other booting problems Computer beeps four times at startup Computer beeps twice at startupComputer beeps three times at startup AirPort connection is slow AirPort Extreme CardAirPort Extreme Card not recognized Battery wont charge BatteryBattery will not eject Bluetooth Bluetooth Card not recognized by other devices Display Display latch not working Hard Drive Internal hard drive will not initialize No keyboard illumination KeyboardNo response from any key on keyboard Microphone is not working MicrophoneHalf keyboard is illuminated Modem does not respond can hear dial tone ModemNo modem dial tone Optical Drive Difﬁculty writing to optical media PC Card does not mount to the desktop PC CardPC Card will not insert into the PC Card slot USB port is not recognizing devices FireWire port is not recognizing devicesPorts USB device not recognized by computer Sound No sound from speakers Distorted sound from speakers Cursor intermittently does not move or moves erratically Cursor does not move when you are using trackpadTrackpad Video Sleep LED does not come on when lid is closed Misc. SymptomsDate and Time settings reset all the time Feet came off the bottom casePage  Service Source Views PowerBook G4 17-inch Exploded View