44
Problem: The unit can be operated normally,
but very few stations or none at all
can be picked up.
Cause:
The antenna system or antenna cable is
faulty.
Remedy:
Check the antenna lead for good contact
at the antenna socket (at the wall) and in
the back of the receiver.
Check that the antenna cable is not
damaged, and has no sharp bends
(kinks). If necessary, fit a new cable.
As a test, try using the system with the
trailing antenna supplied with the
receiver. If you can now receive stations
reasonably well, we recommend that you
call out an expert antenna technician to
check your antenna system.
Problem: Nothing on the screen.
Cause:
Display switched off.
Remedy: Switch the display on again (see 'Dis-
play Functions').
Problem: No output signal at the loudspeakers,
LEDs over the
and
buttons flash alternately
(PROTECTION circuit tripped).
Cause 1:
The PROTECTION circuit has cut in due
to overheating or excessive levels.
Remedy:
Reduce volume; if the receiver does not
switch on again automatically after about
20 seconds it has become too hot and
should be left for a few minutes to cool
off.
Cause 2:
Short circuit in the loudspeaker cables,
e.g. projecting wire ends at the speaker
terminals, or mechanical damage to the
cable.
Remedy:
Check speaker leads and terminals,
twist wire ends together neatly, replace
damaged cable.
Cause 3:
Excessive levels due to poor earth
contact.
Remedy:
Unplug input lead and wait to see if the
receiver switches on again automati-
cally. If so, check and replace input
leads as necessary.
Problem: When volume is very high the unit
switches off repeatedly.
Cause 1:
Overheating due to bad ventilation.
Remedy:
Remove obstructions to ventilation.
Cause 2:
Overheating due to inadequate loud-
speaker impedance.
Remedy:
The impedance of each speaker must
not be lower than 4 Ω (that means - DIN
rating – an impedance minimum
>3.2 Ω).
Problem: Flat sound image, insufficient bass
response.
Cause:
The loudspeaker cables are not connec-
ted "in phase".
Remedy:
Refer to the wiring diagram, check the
connections between the loudspeaker
leads and speakers, and the speaker
terminals on the receiver. Correct where
necessary.
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