User Manual

Aero-38 Manual del usuario/ User´s manual 55
PROBLEM CAUSE SOLUTION
1- Turn down the mixer's output.
3.14 TROUBLESHOOTING
No sound from the unit.
The presence LED
indicator(s) do(es) not light up.
SIGNAL
1- The signal source is sending
no signal.
2- Defective cable.
1- Check that the mixer or sound
source is sending signal to the UNIT.
2- Check that the cable from the
sound source to the UNIT is
connected correctly. Replace the
cable if defective.
Full power cannot be obtained.
The LED indicator(s) never
light(s) up.
LIMIT
1- The signal source does not have
a hot enough output.
1- If using a mixer, use the balanced
output if available. Use a professional
mixer with a hotter output.
Sound is distorted.
The LED indicator(s) is/are not
on, or only light up occasionally.
LIMIT
1- The mixer or signal source
is distorting.
1- Turn mixer channel gains down.
Check that none of your signal
sources are distorting.
Sound is distorted and very loud.
One or more LED indicators
light up.
LIMIT
1- The system is overloaded and
has reached maximum power.
Hum or buzz when a mixer
is connected to the unit.
1- The console probably has
un-balanced outputs. You may
be using an incorrect un-balanced
to balanced cable.
2- The mixer and the powered
speaker are not plugged into
the same mains outlet.
3- The audio signal cable is too
long or too close to an AC cable.
1- Read the appendix of this manual
to make a correct un-balanced to
balanced cable.
2- Connect the mixer and the unit
to the same mains outlet.
3- Use a cable that is as short as
possible and/or move the audio
signal cable away from mains cables.
Hum or buzz when using lighting
controls in the same building.
1- The audio signal cable is too
long or too close to the lighting cable.
2- On a sound system with three-
phase AC, the lighting equipment
and the UNIT are connected to
the same phase.
1- Move the audio signal cable away
from lighting cables. Try to find out
at what point the noise is leaking
into the system.
2- Connect the sound system to
a different phase than the lights.
You may need the help of an electrician
The power on LED indicator(s) do(es)
not light up when the power connector
is rotated and locked at the
ON position.(LOCK)
1 Bad or loose AC connection to
the UNIT or the mains outlet.
2 Faulty AC cable.
3 Blown Fuse.
1- Check you connections.
2- Check the cables, connectors
and AC power with a suitable
mains tester.
3- Replace fuse on fuse holder with
one of the same type. If it blows again,
take the unit to a service centre.