Troubleshooting - VDO TR711U-BU Owner's Manual

Troubleshooting

n Troubleshooting
The following checklist can help you solve
some problems which you may encounter when
using the unit. Before consulting it, check the
Problem
General
The unit will not switch on.
No sound.
The unit or screen does not work normally.
Mode TUNER
Unable to receive stations.
Poor quality reception of radio station.
Preset stations are lost.
Mode USB
Unable to insert USB device.
The USB device cannot be read.
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connections and follow the instructions in the user
manual. Do not use the unit in abnormal condition,
for example without sound, or with smoke or foul
Possible cause
Car ignition is not on.
Cable is not properly connected.
Fuse is burnt.
Volume is set at minimum or the mute function is on.
The unit system is unstable.
The antenna is not connected properly.
The antenna is not fully extended or it is broken.
The battery cable is not properly connected.
The USB device has been inserted the wrong way
round.
NTFS format is not supported.
smell can cause fire or electric shock, immediately
stop using it and call the store where you
purchased it.
Solution
Turn your car key in the ignition.
Check cable connection.
Replace fuse with a new fuse of the same capacity.
Check the volume or switch the mute function off.
Press the RESET button.
Connect the antenna properly.
Fully extend the antenna and if broken, replace it
with a new one.
Connect the permanent live on the unit to the
permanent live on the vehicle.
Insert it the other way around.
Check that the file system is in FAT or FAT32 format.
Due to different formats, some models of storage
devices or MP3 players may not be read.
TR711U-BU RADIO / USB MP3 / WMA 12V
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