FR line
1.-Power connector plugged
incorrectly.
2.-burnt fuse
3.-Power cord in bad condition
1.-Fail on preamplifier elements
2.-Signal cable in bad condition
1.-Other components in your system
are distorting sound
1.-System has reached its
performance limit and power
controllers are permanently on
1.-Ground lift swith position
2.-Signal cable in bad condition
3.-Lighting and sound system share
the same phase
4.-Non balanced signal is sent thru
long cables
1.-make sure you hear the "click".
2.-Replace with same type. If it
continues burning take the unit to
the technical service.
3.-Check the integrity of the cable
and connectors. Replace if
necessary.
1.-Check the correct performace of
preamplifier elements.
2.-Check the integrity of the cable
and connectors. Replace if
necessary.
1.-Check and correct gains on those
components.
1.-Reduce output gain from the
mixing desk.
1.-Check that only one speaker has
the switch in GND and all others in
lift.
2.-Check the integrity of the cable
and connectors. Replace if
necessary.
3.-Use separate phases for lighting
and sound systems.
4.-Use balanced signal with correct
cables (pin codes on page3).
TROUBLESHOOTING
Power does not turn on
No sound
Sound distortion at low levels
Low quality sound
Buzzing and noises on the unit
