6 Troubleshooting

Problem

 

Possible Cause

 

Remedy

No sound.

1.

Power to mixer and/or amplifier is off.

1.

Switch power to mixer or amplifier on.

 

2.

Channel or master fader on mixer, or volume

2.

Set channel or master fader on mixer or volume

 

 

control on amplifier is at zero.

 

control on amplifier to desired level.

 

3.

Microphone is not connected to mixer or ampli-

3.

Connect microphone to mixer or amplifier.

 

 

fier.

 

 

 

4.

Cable connectors are seated loosely.

4.

Check cable connectors for secure seat.

 

5.

Cable is defective.

5.

Check cable and replace if damaged.

 

6.

No supply voltage.

6.

Switch phantom power on.

 

 

 

 

Phantom power supply: connect to power outlet

 

 

 

 

or insert battery

 

 

 

 

(batteries).

 

 

 

 

Check cable and replace if necessary.

 

 

 

 

 

Distortion.

1.

Channel gain control on mixer set too high.

1.

Turn gain control down CCW.

 

2.

Microphone too close to sound source.

2.

Move microphone further away from sound

 

 

 

 

source.

 

 

 

 

Switch preattenuation pad in.

 

 

 

 

 

8

 

 

 

AKG PERCEPTION 120/220

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AKG Acoustics 120, 220 manual Troubleshooting