18
Symptom
Control device turned on,
but no operational display
on the amplifier
LED On does not light up
PRT LED lights up
LED green and LED red
turned on
No sound at all or at some
of the loudspeakers
LED green lightens up
LED red does not light up
Disturbing noise
Distorted reproduction
Cause
No +12 Volt on clamp Rem
Faulty mass connection
Faulty +12V connection
Internal fuses are defective
The electric current +12 Volt is less
than 7 Volt
Amplifier is defective
Warming-up phase in operation
Overload in the loudspeaker circuit
Short-out in the loudspeaker circuit
Amplifier overheated
Loudspeaker system connected
incorrectly
Signal entries not connected
Control device not correctly
connected
The cinch connection plugs have
contact to each other
Poor signal connection
Signal cables are located close to live
lines
The signal entry sensitivity is not
correctly adjusted.
Removal
Verify control cable connection
Verify all cable connections
Verify the connection cables
Fuses should be replaced by qualified personnel
Charge the battery
Repair by service personnel only
Wait 3 seconds for the amplifier to reach normal
operation
Verify the total impedance of the loudspeakers
Remove the short-out
Reduce amplifier volume and allow amplifier to
cool off
Examine and possibly replace the loudspeakers
Verify all connections
Examine control device
Isolate cinch plugs
Use good quality shielded signal cable
Modify cable placement
Using the directions in the manual readjust the
sensitivity.
Disturbance and Removal of Disturbance
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