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English
UDB275MP
Problem Cause Measure
CD/MP3/WMA DISC
No sound heard.
Sound skips or is noisy.
Sound is cut or skipped.
Noise is generated or
noise is mixed with
sound.
Sound is bad directly
after power is turned on.
Wrong filename.
MP3/WMA files are ab
-
sent in a disc.
Files are not recognized
as an MP3/WMA file.
File system is not cor-
rect.
Disc is dirty.
Disc is heavily scratched
or warped.
MP3/WMA files are not
encoded properly.
Water droplets may form
on the internal lens when
the car is parked in a
humid place.
File system is not cor
-
rect.
Write MP3/WMA files onto the disc properly.
Use MP3/WMA files encoded properly.
Use ISO9660 level 1, 2 or JOLIET or Romeo
file system.
Clean the disc with a soft cloth.
Replace with a disc with no scratches.
Use MP3/WMA files encoded properly.
Let dry for about 1 hour with the power on.
Use ISO9660 level 1, 2 or JOLIET or Romeo
file system.
WMA file has no sound
output and skip to next
track.
The song may be copy
protected
(
DRM
)
.
Disable DRM as describe in the chapter “To
disable DRM
(
Digital Rights Management
).
”
Troubleshooting