Important Note: This is a part of the original Emergency Handbook. It has been renamed the Troubleshooting Handbook and substantially revised. Click Here to go to the current Troubleshooting Handbook.

Problems With Sound and Video is part of Chapter 2: Problems With Sound and Video, part of the iMac Emergency Handbook, pp: 41-42.)

• If headphones are connected to the computer, make sure they are firmly connected. Ensure the volume control on your headphones is not turned down too low.
• If you do not have headphones connected to the computer, make sure that nothing else is plugged into the computer's sound output port.
• If you are using a CD-ROM disc over a network, you won't be able to hear the audio portion.
• Make sure that the correct sound source is selected in the Monitors & Sound control panel or in the Sound Source module in the Control Strip.
• Make sure the volume is turned up in the Monitors & Sound control panel.
• Make sure the volume is turned up in the AppleCD Audio Player. With the program open, drag the volume control slider up, use the volume controls on your computer, or press the Up Arrow key on your keyboard.
• The CD may have been paused. Click the Play/Pause button in the AppleCD Audio Player. Audio stops playing when you double-click a CD-ROM disc icon.
• You can't open data files on a CD-ROM disc and listen to audio tracks on it at the same time.

Audio CD begins playing automatically when inserted.

• The computer will automatically begin playing audio CDs when they are inserted. To turn off this feature, use the QuickTime Settings control panel.

Sound comes out of computer's speakers even though headphones are plugged in.

• Plug your headphones into one of the headphone jacks on the front of the computer.

Sound in headphones is odd.

• Your computer has 3D Surround Sound, which doesn't work well through headphones. To turn it off, open the Monitors & Sound control panel and click the Sound icon. Click to remove the X from the Enabled checkbox.

Can't record from audio CD.

• Check your computer's sound input port to see if a microphone or other device is connected.
• You may need to reset the sound options in the Monitors & Sound control panel. See the information on sound in Mac OS Help (choose Help from the Finder's Help menu).

Can't record with microphone.

• If you're using your monitor's built-in microphone to record, use the Monitors & Sound control panel to mute the monitor's speakers. In the same control panel, make sure that the sound input is set to the monitor's built-in microphone.
• If you're using an external microphone plugged into your computer, make sure your sound input source is set to External Microphone. Open the Monitors & Sound control panel, click the Sound icon, and choose External Microphone from the Sound Input pop-up menu.

"QuickDraw 3D could not be found" message appears.

Make sure that the following files are in the Extensions folder (inside the System Folder):

• QuickDraw 3D
• QuickDraw 3D RAVE
• QuickDraw 3D Viewer
• QuickDraw 3D IR

• Quit other open applications.
• Reduce the amount of memory allocated to the application. Follow these steps:
  
  1. Select the application's icon in the Finder.
  2. Choose Get Info from the File menu.
  3. Type a lower number in the box for Preferred Size.
• Install more memory (RAM). See the online documentation that came with your computer for instructions on how to do this.

To view the other sections of Chapter 2: Problems Using Your Computer, click on any of the links below:

• article 43039: Problems with Applications, Documents and Memory
• article 43040: Problems with Hard Disks, CDs, and Other Storage Media
• article 43041: Problems with USB Devices
• article 43042: Problems Printing
• article 43043: Performance and Other Problems
• article 43044: Problems with Networks and File Sharing