Troubleshooting
64
AMM 10
ATTENTION
RISK OF INJURY!
Only authorised service personnel may open the device for troubleshooting.
Problem
Problem
Problem
Problem
Possible cause
Possible cause
Possible cause
Possible cause
Remedy
Remedy
Remedy
Remedy
No sound
Plug of PSU 10 is not
connected to MASTER
CONTROL
Connect PSU 10
Voltage at modules less than ±
10.9 V
Reduce cable length
No earth potential, metal drain
wire has been cut
Use new CAT5 cable
Cable not properly connected
Connect bus cable correctly
LINE OUT module is not
connected to amplifier
Connect output module to
amplifier
Microphone or auxiliary device
not connected
Connect microphone or
auxiliary device to unit
Selector switch on MIC/LINE or
MIC/ZOOM is set to LINE input
Set selector switch to MIC
Volume control set to minimum Turn up volume control
Phantom power is switched off Switch on phantom power for
condensor microphone
Distorted signal
reproduction
Volume control turned up too
far
Turn down volume
Input signal level too high
Reduce input signal
Selector switch on MIC/LINE or
MIC/ZOOM is set to MIC input
Set selector switch to LINE
Indeterminate malfunction
Voltage at modules less than ±
10.9 V
Reduce cable length
Cable not properly connected
Connect bus cable correctly
No earth potential, metal drain
wire has been cut
Use new CAT5 cable
Earth loop due to earthing of
external equipment
Use TRAFO IN or TRAFO OUT
transformer modules
If the error persists despite these instructions, contact AKG Acoustics GmbH or your AKG
dealer immediately.
7
Troubleshooting
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