Apple g4 Manual Do Utilizador
Troubleshooting
Symptom Charts/ Sound - 5 3
Sound
No sound from
computer’s internal
speaker
computer’s internal
speaker
1
Disconnect any microphones or external speakers.
2
Verify the volume is set appropriately in the Sound system
preference or Sound control panel and mute is not checked.
preference or Sound control panel and mute is not checked.
3
Mac OS 9: Start up with all third-party extensions off.
Troubleshoot the extensions.
Troubleshoot the extensions.
4
Clear parameter RAM. Hold down Command-Option-P-R
during startup until you hear a second startup chime.
during startup until you hear a second startup chime.
5
Verify the speaker cable is plugged into the logic board.
6
Plug headphones or external speakers into the external jack.
If the external jack works, replace the internal speaker. If
the external jack doesn’t work, replace the logic board.
If the external jack works, replace the internal speaker. If
the external jack doesn’t work, replace the logic board.