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Apple G4 manual  Service Source Troubleshooting

Models: G4

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Symptom Charts Error Beeps Bulb Wire Cable Misc. Symptoms Battery Procedure Backup Battery Replacement Notes PowerBook G4 1GHz/867MHz Modem  Service Source Take Apart

Page 114

Service Source

Troubleshooting

PowerBook G4 (1GHz/867MHz)

© 2002 Apple Computer, Inc. All rights reserved.

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Apple G4 manual  Service Source Troubleshooting

Page 113 Page 115

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Contents

Service Source PowerBook G4 1GHz/867MHz  Service Source Take Apart Removing the Installed Keyboard KeyboardTools Required Page Page Page Installing the Replacement Keyboard Page  Apple Computer, Inc Memory Card Opening the ComputerPage Page Removing the Installed Memory Card Installing the Replacement Memory Card Closing the Computer  Apple Computer, Inc Bottom Case Removing the Bottom CasePage Page Installing the Replacement Bottom Case Page  Apple Computer, Inc AirPort Card Page Page Page Removing the Installed AirPort Card Installing the Replacement AirPort Card Page Closing the Computer Page  Apple Computer, Inc Hard Drive Backing Up Your Data Opening the ComputerPage Page Page Removing the Installed Hard Drive Page Installing the Replacement Hard Drive Page Closing the Computer Page  Apple Computer, Inc Modem Filter Board ToolsPreliminary Steps Procedure DC-In Board PowerBook G4 1GHz/867MHz DC-In Board Replacement Notes PowerBook G4 1GHz/867MHz DC-In Board Inverter Board PowerBook G4 1GHz/867MHz Inverter Board PowerBook G4 1GHz/867MHz Inverter Board Modem PowerBook G4 1GHz/867MHz Modem PowerBook G4 1GHz/867MHz Modem PowerBook G4 1GHz/867MHz Modem PowerBook G4 1GHz/867MHz Modem Replacement Instructions Procedure Page Page Page Page Page Backup Battery PowerBook G4 1GHz/867MHz Backup Battery PowerBook G4 1GHz/867MHz Backup Battery Logic Board PowerBook G4 1GHz/867MHz Logic Board PowerBook G4 1GHz/867MHz Logic Board PowerBook G4 1GHz/867MHz Logic Board PowerBook G4 1GHz/867MHz Logic Board PowerBook G4 1GHz/867MHz Logic Board Remove the ﬁve identical bronze colored T8 screws PowerBook G4 1GHz/867MHz Logic Board PowerBook G4 1GHz/867MHz Logic Board PowerBook G4 1GHz/867MHz Logic Board PowerBook G4 1GHz/867MHz Logic Board PowerBook G4 1GHz/867MHz Logic Board PowerBook G4 1GHz/867MHz Logic Board PowerBook G4 1GHz/867MHz Logic Board PowerBook G4 1GHz/867MHz Logic Board PowerBook G4 1GHz/867MHz Logic Board PowerBook G4 1GHz/867MHz Logic Board Primary Fan PowerBook G4 1GHz/867MHz Primary Fan Replacement Procedure Secondary Fan PowerBook G4 1GHz/867MHz Secondary Fan PC Card Cage PowerBook G4 1GHz/867MHz PC Card Cage PowerBook G4 1GHz/867MHz PC Card Cage Rib Frame and Heat Exchanger PowerBook G4 1GHz/867MHz Rib Frame and Heat Exchanger PowerBook G4 1GHz/867MHz Rib Frame and Heat Exchanger PowerBook G4 1GHz/867MHz Rib Frame and Heat Exchanger PowerBook G4 1GHz/867MHz Rib Frame and Heat Exchanger PowerBook G4 1GHz/867MHz Rib Frame and Heat Exchanger Disconnect the audio cable at each end of the heat exchanger PowerBook G4 1GHz/867MHz Rib Frame and Heat Exchanger PowerBook G4 1GHz/867MHz Rib Frame and Heat Exchanger Bulb Wire Cable PowerBook G4 1GHz/867MHz Bulb Wire Cable PowerBook G4 1GHz/867MHz Bulb Wire Cable Door PowerBook G4 1GHz/867MHz I/O Door Display Module PowerBook G4 1GHz/867MHz Display Module Display module includes all three cables PowerBook G4 1GHz/867MHz Display Module Top Case PowerBook G4 1GHz/867MHz Top Case PowerBook G4 1GHz/867MHz Top Case  Service Source Troubleshooting Symptom Charts How to Use the Symptom ChartsStartup Memory error message appears on the screen Flashing question mark appears on the screen System shuts down intermittently System shuts down almost immediately after startup System crashes or hangs intermittently Computer beeps twice at startup Error BeepsComputer beeps once at startup Computer beeps three times at startup AirPort Card BatteryBattery will not eject Computer beeps four times at startup Battery wont charge Display Display latch not workingPage Internal hard drive will not initialize Hard DriveKeyboard No response from any key on keyboard No modem dial tone ModemOptical Drive Modem does not respond gets dial tone PC Card PC Card will not insert into the PC Card slot FireWire or USB port is not recognizing devices PortsUSB device not recognized by computer Sound No sound from speakers Video Distorted sound from speakers Misc. Symptoms Latch not working Date and Time settings reset all the time AirPort Card installed and received a -3278 errorMicrophone is not working If symptom repeats, replace logic board Screw Reference Sheet Screw Locator Secondary Fan Logic Board PC Card Cage Rib Frame and Heat Exchanger Exploded View

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