Apple 5260 Manual De Usuario
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Troubleshooting
Symptom Charts/Audio - 7
Crackling noise is
present when
playing sounds other
than system beeps
and not in “play
through” mode
1 If static noise varies while adjusting volume with Sound
control panel, use Audio Volume Extension 1.1 or later.
Note:
Audio Volume Extension is available from standard
Apple software update sites.
2 Replace logic board.