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10 PROBLEM CHART
PROBLEM
No power.
• The
CAUSE
power cord is not connected.
REMEDY
the power cord and any
extension cables.
• Check
• The
power voltage does not match
the allowed working voltage.
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.
Fan does not work, LEDs • The power cord is not connected.
do not light up
Protect LED lights up • Inputs receive DC voltage.
permanently
• Check
the power voltage.
the power cord and if the
plugs are tightly connected with the
sockets.
• Clean the socket and/or the plug.
• Check
check if the power is
available
• Switch amplifier off and have the
device checked by a servicetechnician.
to • Clean the fan grille.
• Amplifier
is overheated due
impurities.
• Impedance of speakers too low
• Short-circuit in speaker connection or
in speakers.
• VHF signal at speaker output.
• Technical default of amplifier.
• Please
• Connect other speakers.
• Check speakers.
• Check signal source.
• Switch amplifier off and
device checked
technician.
by
a
have the
service
11 CLEANING AND MAINTENANCE
DANGER TO LIFE!
Disconnect from mains before starting maintenance operation!
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 serviceable parts inside the device except for the fuse. Maintenance and service operations are
only to be carried out by authorized dealers.
11.1 Replacing the fuse
If the fine-wire fuse of the device fuses, only replace the fuse by a fuse of same type and rating.
Before replacing the fuse, unplug mains lead.
Procedure:
Step 1: Open the fuseholder on the rear panel with a fitting screwdriver.
Step 2: Remove the old fuse from the fuseholder.
Step 3: Install the new fuse in the fuseholder.
Step 4: Replace the fuseholder in the housing.
Should you need any spare parts, please use genuine parts.
If the power supply cable of this device becomes damaged, it has to be replaced by a special power supply
cable available at your dealer. Should you have further questions, please contact your dealer.
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