Service Reference Guide

Service Reference Guide F–9
Troubleshooting Without Diagnostics
Audio
Problem Possible Solution
Sound does not come out of the
speaker.
Software volume control is turned down electronically, or
CD-ROM volume control on the front or back of the
computer is turned down. Double–click on the speaker icon
located on the taskbar, then set the volume by adjusting the
volume slider.
CD or DVD volume control on the front of the computer may
be turned down. Increase the volume by turning the volume
control dial.
External speakers not turned on. Turn on the speakers.
External speakers plugged into wrong jacks. Refer to the
Computer User’s Guide or sound card documentation for
proper speaker connection.
Audio cable not connected. Connect audio cable between
CD or DVD drive and the system board.
Noise or silence comes from the
speakers or headphones.
Computer may not detect correct speaker/headphone type
or output or analog–to–digital auto–sense is not engaged.
1. If using digital speakers with a stereo jack, use the
stereo–to–mono adapter to engage the auto–sense
feature.
2. If a the stereo–to–mono adapter is not available, use the
multimedia device properties to manually switch the
audio signal from analog to digital.
3. If the headphones have a mono jack, use the
multimedia device properties to manually switch the
system to analog out.
✎
If you set digital as the Output mode, the internal speaker
and external analog speakers will no longer output audio
until you switch back to an auto–sense or analog mode.
If you set analog as your Output Mode, external digital
speakers will not function until you change the output
mode back to auto–sense or digital mode.