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280-7963-00
DMZ637MP 27
English
26 DMZ637MP
280-7963-00
English
MD cannot be
loaded.
Sound skips or is
noisy.
Sound is bad
directly after
power is turned
on.
Another MD is already
loaded.
MD inserted wrongly.
MD is heavily scratched or
warped.
Water droplets may form on
the internal lens when the
car is parked in a humid
place.
Eject the MD before loading the new one.
Insert correctly.
Replace with an MD with no scratches.
Let dry for about 1 hour with the power on.
Problem
Cause Measure
MD
8. IN CASE OF DIFFICULTY
Power does not
turn on.
(No sound is
produced.)
No sound output
when operating
the unit with
amplifiers or
power antenna
attached.
Nothing happens
when buttons are
pressed.
Display is not
accurate.
No sound heard
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
Play list play is
not performed.
Fuse is blown.
Incorrect wiring.
Power antenna lead is
shorted to ground or
excessive current is required
for remote-on the amplifiers
or power antenna.
The microprocessor has
malfunctioned due to noise,
etc.
The speaker protection
circuit is operating.
MP3/WMA files are absent in
a disc.
Files are not recognized as
an MP3/WMA file.
File system is not correct.
Compact disc is dirty.
Compact 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 correct.
File name or extension is not
correct.
Replace with a fuse of the same amperage. If the
fuse blows again, consult your store of purchase.
Consult your store of purchase.
1. Turning the unit off.
2. Remove all wires attached to the power antenna
lead. Check each wire for a possible short to
ground using an ohm meter.
3. Turning the unit back on.
4. Reconnect each amplifier remote wire to the
power antenna lead one by one. If the amplifiers
turn off before all wires are attached, use an
external relay to provide remote-on voltage
(excessive current required).
1. Turn down sound volume. Function can also be
restored by turning the power off and on again.
(Speaker volume is reduced automatically when
the speaker protection circuit operates).
2. If the sound is muted again, consult our service
department.
Write MP3/WMA files onto the disc properly.
Use MP3/WMA files encoded properly.
Use ISO9660 level 1, 2, 3 or JOLIET or Romeo file system.
Clean the compact disc with a soft cloth.
Replace with a compact 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, 3 or JOLIET or Romeo file system.
Use alphanumeric/ASCII characters for MP3/WMA file name.
Use “.M3U” or “.ASX” for the file extension of a play list.
Problem
Cause Measure
CD/MP3
General
Press the reset button for
about 2 seconds with a thin
rod.
Reset button