Troubleshooting - AKG DMM 12BC User Instructions

Troubleshooting

7 Troubleshooting
78
RISK OF INJURY!
Only authorised personnel may open the device for troubleshooting.
ATTENTION
Problem
No sound
No sound with sinusoidal
feed
Distorted signal
reproduction
If the error persists despite these instructions, contact AKG Acoustics GmbH or your AKG
dealer immediately.
Possible cause
Power supply cable is not Connect power supply cable to
connected to unit unit
Power switch off Turn power switch to on
position
Unit is not connected to Connect output channel to
amplifier amplifier
Microphone or auxiliary Connect microphone or
equipment not connected to auxiliary device to unit
unit
Volume control set to Turn up volume control
minimum
Volume controls set to mute Cancel muting by pressing
rotary knob
Pre-amplification not set Set gain control on rear panel
correctly to correct pre-amplification
Phantom power is switched off Switch on phantom power for
condenser microphone
external potentiometer set to Turn up external potentiometer
minimum
Automix algorithm suppressing Exclude channel from automix
constant signal algorithm
Pre-amplification not set Set gain control on rear panel
correctly to correct pre-amplification
Volume control turned up too Turn down volume
far
Input signal level too high Reduce input signal
Remedy
DMM 12BC