22
•
EN
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 or is defective.
•
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.
LED FAULT lights up
permanently.
•
Inputs receive DC voltage.
•
Amplifier is overheated due to
impurities or heat accumulation.
•
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.
•
Provide for sufficient air circulation.
•
Connect other speakers.
•
Check speakers.
•
Switch amplifier off and have the
device checked by a service
technician.
8
Cleaning and Maintenance
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. 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.
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.
Summary of Contents for MPVZ Series
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