Apple G4 - page 74

PowerBook G4 (1GHz/867MHz) Logic Board - 7

10. Remove the ﬁve identical (bronze colored) T8 screws.

Note: When reassembling the computer, do not overtighten the screws.

Contents

Main Page Keyboard Removing the Installed Keyboard Page Page Page Installing the Replacement Keyboard Page Page Memory Card Page Page Removing the Installed Memory Card Installing the Replacement Memory Card Page Page Bottom Case Removing the Bottom Case Page Page Installing the Replacement Bottom Case Page Page AirPort Card Page Page Page Removing the Installed AirPort Card Installing the Replacement AirPort Card Page Page Page Page Hard Drive Backing Up Your Data Page Page Page Removing the Installed Hard Drive Page Installing the Replacement Hard Drive Page Page Page Page Modem Filter Board Page DC-In Board Page Page Page Inverter Board Page Page Modem Page Page Page Page Page Page Page Page Page Page Page Backup Battery Page Page Logic Board Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Primary Fan Page Page Secondary Fan Page PC Card Cage Page Page Rib Frame and Heat Exchanger Page Page Page Page Page Page Page Page Bulb Wire Cable Page Page I/O Door Page Display Module Page Page Page Top Case Page Page Page Symptom Charts How to Use the Symptom Charts Startup The computer will not power on (no fan movement, hard drive spin up and display is not lit) Memory error message appears on the screen inch (or shorter) PC-133 compliant, SO-DIMM memory cards. Flashing question mark appears on the screen System shuts down intermittently System shuts down almost immediately after startup System crashes or hangs intermittently Error Beeps Computer beeps once at startup Computer beeps twice at startup Computer beeps three times at startup If symptom repeats, replace logic board. AirPort Card AirPort Card not recognized Battery Battery will not eject The battery won't charge Display Display latch not working Bright Up to 3 Dark Up to 5 Combination Up to 7 Bright 4 or more Dark 6 or more Combination 8 or more Page Hard Drive Internal hard drive will not initialize If in Mac OS X: If in Mac OS 9: to Article 31077: Hard Drive Data Recovery & Warranty Implications, for important information. Modem No modem dial tone Modem does not respond (gets dial tone) Optical Drive The optical drive does not accept CD or DVD disc (mechanical failure) PC Card PC Card will not insert into the PC Card slot Ports The FireWire or USB port is not recognizing devices A USB device not recognized by computer with the manufacturer of the adapter for compatibility. Sound No sound from speaker(s) Distorted sound from speakers Video No display, or dim display, but computer appears to operate correctly No video on an external VGA device connected to the external monitor (DVI- I) port Misc. Symptoms Latch not working The Date and Time settings reset all the time AirPort Card installed and received a -3278 error The microphone is not working Page Screw Reference Sheet Page Page Page Page Page Exploded View