Troubleshooting - Velleman 8020 Bedienungsanleitung

Troubleshooting

TROUBLESHOOTING
Symptom
No sound coming from the speakers
+6dB memory is erased
Hum or noise is coming from the
speakers
No button is reacting anymore and/
or no LED indication is functioning
anymore
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.
To make sure the control amplifier is
the source of hum, disconnect all
input 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 inter-
nal processor.
Check the mains fuse, replace only
with indicated rating. A spare fuse is
located in the fuse holder.
The monitor function is not en-
gaged, press the desired input once
again to engage the monitor output.