00031120.DOC, Version 1.0
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PROTECT
active during stabilisation period after switching on or when one of the
protective circuits started
When operating the amplifying system, please make sure that the loudspeakers always sound well. When
distorsions can be heard, either the amplifier or the loudspeaker is overloaded. Overloads can quickly lead to
amplifier or speaker damage.
In order to avoid damage, please reduce the volume immediately when distortions can be heard. When
speaker-systems are destroyed by overload, the guarantee becomes void.
Always check the sound pressure level with a meter in order to keep to the threshold.
If you want to switch off the system,
switch off the amplifier first
and then the pre-amplifiers in order to
avoid acoustic shocks on the speakers.
7. PROBLEM CHART
PROBLEM:
CAUSE:
REMEDY:
No power.
• The power-cord is not connected.
• Check the power-cord and any
extension-cables.
No sound.
• The power-cord of the respective
device is not connected properly or
not connected at all.
• The connection-socket or the plug is
dirty.
• Check the power-cord and if the
plugs are tightly connected with the
sockets.
• Clean the socket and/or the plug.
Noise.
• The input-signal is too strong.
• Reduce the input-signal via the Gain-
control.
Fan does not work, LEDs
do not light up
• The power-cord is not connected.
Please check if the power is available
PROTECT LED lights up
permanently
• Inputs receive DC-voltage.
• Amplifier is overheated due to
impurities.
• Impedance of speakers too low
• Short-circuit in speaker connection or
in speakers
• Technical default of amplifier
• Switch amplifier off and have the
device checked by a service-
technician.
• Clean the fan-grille.
• Connect other speakers.
• Check speakers.
• Switch amplifier off and have the
device checked by a service-
technician.
8. CLEANING AND MAINTENANCE
Disconnect from mains before starting maintenance operation!
DANGER TO LIFE!
We recommend a frequent cleaning of the device. Please use a soft lint-free and moistened cloth. Never use
alcohol or solvents!
There are no servicable parts inside the device except for the fuse. Maintenance and service operations are
only to be carried out by authorized dealers.
