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MC402
14
Troubleshooting
Problem
The device will not switch on. The vehicle is not switched
No sound.
The device or display are not
functioning correctly.
The device will not play any
disks.
When the disc is playing, the
sound is interrupted by
vehicle vibrations.
The radio receives no radio
stations.
The radio reception is only
very weak.
The preset radio stations are
no longer stored when
restarting the radio.
EN
Cause
on.
The cables have not been
connected correctly.
The fuse is faulty.
The volume is set to
minimum.
The sound is muted.
The reverse gear is engaged
when the reverse mute
function is activated.
The system is unstable (e.g.
the on-screen display is
frozen).
The disc has not been
correctly inserted.
The disc is dirty or damaged. Clean the disc and check for
The device has been fitted at
an angle of more than 30° to
the horizontal.
The aerial is not properly
connected.
The aerial is not fully
extended.
The aerial is damaged.
The battery cable is not
properly connected.
Troubleshooting
Remedy
Switch the ignition to
ACC/ON or START.
Check whether the cables
are correctly connected.
Replace the fuse with a new
one of the same type (5 A).
Check the volume.
Switch the sound on again.
If required, disable the
reverse mute function.
Reset the system by pressing
the RESET button.
The disc must be inserted
with the label facing
upwards.
damage.
Fit the device at an angle of
under 30° to the horizontal.
Fit the unit so it is firm and
secure.
Connect the aerial correctly.
Extend the aerial fully.
Check the aerial for damage
and replace if necessary.
Connect the battery cable
correctly.
63
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