Apple Mac 8600 - Manual (Page 88)

Troubleshooting Symptom Charts/Miscellaneous - 25
Miscellaneous
No sound from
speaker
1 Verify that volume setting in Control Panel is 1 or above.
2 Clear parameter RAM. Hold down <Command> <Option> <P>
<R> during startup but before "Welcome to Macintosh"
appears. Verify speaker is plugged into logic board.
3 Replace speaker.
4 Replace logic board. Retain customer’s DIMMs.