Problem Possible cause Potential solution
Phantom power is disabled for
an electret or condenser
microphone.
Enable the phantom power
supply or use a dynamic
microphone.
Connection jumper is missing
between Insert out and Insert
in to connect the power
amplifier input to the pre-
amplifier output.
Replace jumper or use a short
cable with two RCA plugs.
Music player control is in pause
or mute mode.
Press the play / mute button to
begin playback.
Sound is distorted or
noisy
Audio cable is loose and/or not
connected properly.
Connect the audio cable to the
line input jack of the DJ audio
mixer.
Jacks and/or jack plugs are
dirty.
Wipe away dust or dirt and
reinsert jack plugs.
Unit does not work The power cord is
disconnected or unit has been
switched off.
Insert the power cord and
switch on the unit.
Customer service
If a fault cannot be resolved, please contact your supplier or system integrator, or go directly
to your Bosch representative.
9.1
Plena All-in-One System Troubleshooting | en 43
Bosch Security Systems B.V. Installation and Operating Manual 2014.09 | V1.2 |
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