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PowerBook G4 (1GHz/867MHz) Troubleshooting - 17
Misc. Symptoms Symptom Charts
The Date and Time settings reset all the time
Note: Resetting the power manager or PRAM resets the date and time.
1. Do a backup battery test:
• Set the date and time.
• Perform a Shut Down from the Apple menu or Special menu.
• Remove the main battery and disconnect the power adapter for 10 minutes.
• Connect the power adapter, insert the battery, and power on the computer.
• If the date and time were lost the backup battery may be dead or discharged.
• Remove the main battery from the unit and leave the PowerBook plugged in
for at least 5 hours.
Note: If a discharged main battery is installed in the computer, recharging the
backup battery may take up to 48 hours to completely charge. It is okay to use
it while it is charging.
• If the date and time still reset, replace the backup battery.
2. If not the backup battery, replace logic board.
Note: For main and backup battery part numbers, refer to article 11751:
Macintosh Family: Batteries and Part Numbers.
AirPort Card installed and received a -3278 error
1. Use Software Update control panel or see the Apple Software Updates web page to
make sure the latest version of AirPort software is installed.
2. Boot using Mac OS All extensions setting.
3. Reseat AirPort Card.
4. Remove and reinstall the AirPort software.
5. Replace with known-good AirPort Card.
6. Replace logic board.
The microphone is not working
1. Check the Sound control panel and verify that the selection for input is the built-in
microphone.
2. Check the signal level and level meter and adjust the gain.
3. Remove Sound Preferences from the Preferences folder and restart.
4. Reset PRAM (Press the power button, then hold down the Option-Command-P-R
keys until you hear the startup chime at least one additional time after the initial
startup chime).
Warning: Resetting the PRAM will permanently remove a RAM disk, if present,
and all of its contents. You will also need to reset the date and time (using the
Date & Time control panel).