Troubleshooting - Velleman 8021 Mode D'emploi

Troubleshooting

TROUBLESHOOTING
Symptom
No sound coming from the speakers
+6dB memory is erased
Distorted sound at phono/aux input
Hum or noise is coming from the
speakers
No button is reacting anymore and/or
no LED indication is functioning any-
more
The tape recorder, MD, CDR... is not
receiving a signal
8
Possible cause
Mute is on, press standby/mute but-
ton. The power amplifier is turned off.
Wrong source is selected
A power failure has occurred.
The power-cord has been discon-
nected.
Input is wrongly configured see P.4-5
To make sure the control amplifier is
the source of hum, disconnect all in-
put leads.
Use good quality audio leads.
Check the earth connection of the
phono or mains.
The control amplifier is too close to
the power amplifier or too close to
other magnetic field like a power
adapter or other mains operated unit.
Static electricity or lightning can
cause malfunction of the unit.
Disconnect the power-cord for about
10 seconds, this will reset the internal
processor.
Check the mains fuse, replace only
with indicated rating. A spare fuse is
located in the fuse holder.
The monitor function is not engaged,
press the desired input once again to
engage the monitor output.