Apple Macintosh - Plextor 12-20C Using Manual

CHAPTER 12---- Troubleshooting

12.3 Apple Macintosh

Symptoms
Invalid Drive Specification
No Device Found
Drive Not Responding
Possible Cause and Solution
SCSI Address Conflicts with the Hard Disk Drive
This usually can be corrected by selecting another SCSI address (normally addresses 1 to
6) for your CD-ROM drive. Note: The Macintosh's hard disk uses address 0 and its
internal SCSI adapter uses address 7.
Symptom
Computer Does Not Respond
Possible Cause and Solution
INIT Conflicts
Remove all INITs except those absolutely needed from your System Folder and the
ones copied from the CD-ROM device driver disk. If the CD-ROM drive functions
correctly, reinstall the INITs one at a time, restarting the Macintosh after each one,
until the problem is solved.
Symptom
Low Performance of CD-ROM Application Software
Possible Cause and Solution
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
CD-ROM drive must use your computer's SCSI bus almost simultaneously. To remedy
this, remove Virtual Mode from the system and restart the Macintosh.
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12/20PLEX OPERATION MANUAL