Troubleshooting - Velleman 8040 Mode D'emploi

TROUBLESHOOTING

Symptom
No sound coming from the speakers.
Auto power memory is erased.
Hum or noise is coming from the
speaker.
The button is not reacting and/or no
LED indication is functioning.
Possible cause
The power amplifier is turned off.
Bypass is used as input.
A power failure has occurred. The
power-cord has been disconnected.
The amplifier has been turned off
manually.
To make sure the
source of hum, disconnect all input
leads. Use good quality audio leads.
Check the AC Power earth connec-
tion. The power amplifier is too close
to other magnetic field like a power
adapter or other AC 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.
Troubleshooting
amplifier is the
9