Symptom
Additional Symptom
•
CDR103----Not High Sierra Format
Occurs Regardless of the Discs Used
Possible Causes and Solutions
Incorrect Jumper Setting
You might have the block jumper set to ON. See page 18.
Hardware Conflict
If the SCSI interface board uses DMA channels, try changing the selected DMA
channel. See the instruction manual for your SCSI interface board.
Memory Manager Conflict
If the SCSI interface board uses memory-mapped addressing or has a BIOS, exclude
the addresses from the memory manager. See the instruction manual for your SCSI
interface board.
Incorrect Version of Microsoft CD-ROM Extensions
Version 2.00 or higher of MSCDEX is required to read a High Sierra or ISO 9660
format disc.
Symptom
Additional Symptom
•
Excessive Noise
CDR101 Error Message
•
Disc Heard Jumping
•
Excessive Vibration
Possible Causes and Solutions
Defective CD-ROM Disc
A fingerprint, contaminants, or deep scratches on the disc’s surface may prevent the
drive from reading data. See Chapter 10 to learn how to clean CD-ROM discs.
You should also review the low-performance symptom discussed on the next page.
CD-ROM Drive Set to Test Mode
Turn this switch OFF. The test mode is for factory use only. Always turn the drive OFF
before changing the setting of the switches. See Chapter 6.
CHAPTER 12 ---- Troubleshooting
ULTRAPLEX OPERATION MANUAL
57
