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Troubleshooting
What appears to be trouble is not always serious. Please check the following points before calling
a service center.
Problem
Cause
Corrective action
General
Unit can not power on
Unit fuse blown.
Install new fuse with correct rating.
Car battery fuse blown.
Install new fuse with correct rating.
Illegal operation
Reset the unit.
No/low audio output
Improper audio output connection.
Check wiring and correct.
Volume set too low.
Increase volume level.
Speakers damaged.
Replace speakers.
Heavily biased volume balance.
Adjust the channel balance to center
position.
Speaker wiring is in contact with metal part of
car.
Insulate all speaker wiring connections.
Poor sound quality or
distortion
Pirated disc is in use.
Use original disc.
Speaker power rating does not match unit.
Replace speakers.
Wrong connections.
Check wiring and correct.
Speaker is shorted.
Check wiring and correct.
Unit resets itself when
engine is off
Incorrect connection between ACC and BATT.
Check wiring and correct.
TFT monitor
Warning information is
shown at all times
Parking break wiring is not correct.
Check wiring and correct.
Flashing image or
interference appears on
screen
The color system of DVD disc does not match the
monitor.
Adjust the color system of the DVD disc
playing back or the monitor in use.
Pirated disc is in use.
Use original disc.
Video cable damaged.
Replace cables.
Improper video signal connections.
Check wiring and correct.
Disc playback
Cannot insert disc
A disc is already inside the unit.
Eject current disc and insert new one.
Disc does not play back
Disc is warped or scratched.
Use disc in good condition.
Disc is dirty or wet.
Clean disc with soft cloth.
Incompatible disc is used.
Use compatible disc.
Disc is inserted upside down.
Insert disc with label side up.
Disc region code is not compatible with unit.
Use disc with proper region code.
PBC cannot be used during
VCD playback
PBC is not available on the disc.
Use disc with PBC available.
Repeat or search function is
invalid during VCD playback
PBC is on.
Turn PBC off.
Summary of Contents for M-DVD4000
Page 1: ...USER MANUAL M DVD4000...
