Troubleshooting - Renkforce HEADUNIT CD-3994 Bedienungsanleitung

 ENGLISH

11. Troubleshooting

The CD tuner you have purchased is equipped with state-of-the-art technology and is safe to operate.
Nevertheless, problems or faults might occur.
Therefore, we would like to describe how to eliminate possible faults:
Problem
No playback, no display, and the
lights are out
Playback only through one
speaker.
Playback only through the front
or rear speakers.
In radio operation hardly any
stations can be received.
Problems during radio and CD
playback.
When you press a station button,
you only hear hissing.
Every time you switch off the CD
tuner, the station programming
gets lost.
Version 0/07
Always observe the safety instructions!
Solution
•
•
•
•
•
•
•
•
•
•
•
•
•
All other repairs than the ones described above must be carried out by an authorised
specialist only.
The vehicle fuse is defective. Look up the respective fuse in the
operation manual of your car. Check the fuse.
The fuse of the CD tuner is defective. Remove the CD tuner and
check the fuse.
The positive line/ground line is loose. Remove the CD tuner and
check the connections of the cables.
The balance control is wrongly adjusted. Adjust the balance
control as described.
Speaker connection has come loose. Remove the CD tuner and/
or speakers and check the connections.
The fader control is wrongly adjusted. Adjust the fader control.
The speaker connection has come loose. Remove the CD tuner
and/or speakers and check the connections.
The aerial is not pulled out completely. Pull out the aerial to its
full length.
The aerial connection has come loose. Remove the CD tuner and
check the connection.
The aerial is defective. Check the connection, grounding and
the aerial itself.
Interferences reach the CD tuner via the positive line. Install an
additional interference suppression coil into the positive line. If
necessary also equip the vehicle with spark-plug suppressor
sockets, distributor arms etc. to suppress interferences.
No station has been programmed. Program the stations as
described above.
The continuous positive line is not connected, or has come loose.
Connect or check the continuous positive line as explained in the
instructions or check whether the cable is correctly connected.
Check the fuse.