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ULTRAPLEX 40X OPERATION MANUAL
CD-ROM Drive Set to Test Mode
Turn this switch OFF. The test mode is for factory use only. Always turn the
drive power OFF before changing the setting of the switches, Chapter 6.
CD-ROM Disc is Poorly Balanced
Poorly manufactured discs that are out-of-balance or discs with poorly
distributed ink on labeling will cause significant vibration at high speeds. Read
errors may also occur. Such out-of-balance conditions can also exist if the disc
label adds more weight to one area of the disc than another. Adhesive labels
may also cause out-of-balance conditions. Remove any adhesive labels on the
label side of the disc and clean the surface following instructions in Chapter
10. If there is no foreign substance on the disc, you may wish to contact the
disc manufacturer for a replacement.
In DOS or Windows (3.x, 95, 98, NT), use Plextor Manager to lower the drive
speed.
Symptom
• Low performance of CD-ROM application software
Possible Cause and Solution
Drive Automatically Set to Slower Throughput
Plextor’s drives are designed to automatically switch from top speed
throughput to slower speeds when they encounter a defect or a scratch on
your disc. The drive then will continue to read data from the disc at the
auto-selected speed for a period of time. If no read errors are encountered,
then the drive spins up to the top speed possible without read errors. It is also
possible that the disc is dirty. Please refer to page 43 for instructions on how
to clean your CD-ROM disc.
Symptoms
• Disc is ejected after being inserted
• ON/BUSY light flashes 4 times
Possible Cause and Solution
CD Is Unreadable
Plextor’s drives are designed to automatically eject any unreadable CD. Please
be sure that the CD-ROM disc or audio CD is “label-side” up in the tray. If not,
CHAPTER 12 — Troubleshooting
Summary of Contents for PX-40TSe
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