iMac and Mac OS 9: No Sound or Startup Chime Heard

At startup, no chime is heard, nor are any beep sounds or other audio sources.

Products affected:

iMac, Mac OS 9

Solution:

• Verify the system volume setting in the Sound portion of the Monitors & Sound control panel is not muted. The start-up chime on the iMac is controlled through software sound controls, allowing the volume of the startup chime to be adjusted.
• Verify the audio cable is properly connected if a RAM upgrade was recently performed. Following the RAM install directions in the Mac OS Info Center, look at Step 10 for a diagram depicting the audio cable.
• If the cable is connected correctly, you may consider having the computer inspected by an Apple-authorized service provider.