12.1 PC Compatibles: Initial Installation
Symptoms
Additional Symptom
•
No sound when running a
CD-ROM program
No sound when playing an audio CD
Possible Causes and Solutions
Application Does Not Use CD-Audio
There are two types of audio you may encounter when using CD-ROMs:
1) Sound Card Audio:
This comes from data (e.g., .WAV or .MID files) that is transferred from your
CD-ROM disc via the SCSI host adapter into your computer and is translated
by your soundboard into sound. If you do not have a soundboard, you will
not be able to hear this form of audio.
2) CD Audio:
This comes from audio discs (like the ones used by your home stereo) that
are translated directly by your CD-ROM drive into sound. You do not need
a soundboard to hear this audio. You can hear this audio by plugging a set
of headphones or powered speakers into the headphone jack on the front
of your drive.
One reason, then, that you might not hear sound when playing a CD-ROM disc is
that a soundboard is required. These discs use only sound card audio, not CD Audio.
To help you determine if you are having a soundboard problem, or a CD Audio
problem, try playing an audio CD in your CD-ROM drive. If you can hear music
(through headphones or speakers connected to the headphone jack on the front of
your drive), the CD-ROM disc you are playing may require the use of a soundboard
in order to hear sound. If possible, check the manual that came with the CD-ROM
disc and see if the use of a soundboard is recommended or required.
If you have a soundboard and can hear an audio CD when it is played but cannot
hear sound when you play a CD-ROM disc, you may have configured your sound-
board incorrectly. Check the troubleshooting section of your soundboard manual for
further advice. If you have a soundboard but you cannot hear an audio CD when it
is played, check the following points:
CHAPTER 12 ---- Troubleshooting
48
ULTRAPLEX OPERATION MANUAL
