Plextor PlexWriter 8/2/20, Руководство по эксплуатации

Страница: 51 / 76

5. Maintenance and Troubleshooting
PlexWriter 8/2/20 Operation Manual
47
Possible Cause
•
Software conflicts.
Solution
•
Disable all software from your Extensions folder except those absolutely needed
and the ones copied from the CD-ROM device driver disk. If the PlexWriter
drive functions correctly, enable extensions one at a time, restarting the
Macintosh after each installation, until the problem is solved.
Symptom
Low performance of CD-ROM application software, especially graphics and
animation.
Possible Cause
•
System set for Virtual Memory. If your Macintosh is using System 7 and is in
Virtual Mode, it may exhibit slow performance during real-time graphics and
animation. This is because your hard disk drive and PlexWriter drive must use
your computer’s SCSI bus almost simultaneously.
Solution
•
Remove Virtual Mode from the system and restart the Macintosh.
Troubleshooting Performance Problems
Symptoms
Low performance of CD-ROM application software.
Possible Cause
•
Defect or scratch on disc.
•
Disc dirty.
•
When the PlexWriter drive encounters a defect or scratch, it automatically
switches from top speed to slower throughput. It then reads data from the disc at
the auto-selected speed for a period of time. If no read errors are encountered, the
drive spins up to the top speed possible without read errors.
Solutions
•
This is normal operation, although you can try cleaning the disc as detailed on
page 40.
•
Replace the disc.
Troubleshooting Audio Problems
Symptoms
No sound from speakers when playing a CD disc.
Sound from headphones OK when playing same CD disc.
Possible Cause #1
•
Sound board required for playing through speakers.