200W mezclador-amplificador /
mixer-ampliifier Manual del usuario / User's manual
13
TROUBLESHOOTING
PROBLEM
CAUSE
SOLUTION
No sound from the unit.
The power on LED indicator (on the
front of the unit) does not light up
when the power switch is at the on
(“|”) position.
1 – Bad or loose AC connection to
the unit or the mains outlet.
2 – Faulty AC cable.
3 – Blown Fuse.
1 – Check your connections. Insert
the IEC plug securely into the unit’s
AC socket.
2 – Check the cables, connectors and
AC power with a suitable mains
tester.
3 – Replace fuse on fuse holder under
AC input with one of the same type
only. If it blows again, take the unit to
a service centre.
No sound from the unit.
The power on LED indicator (on the
front of the unit) is lit.
1 – The channel (
MIC or LINE) or the
main (
LEVEL) volume controls are set
too low.
1 - Turn up the volume for the
channel you are using (
MIC or LINE)
as well as the main
LEVEL control.
No sound from the unit.
The
SIGNAL presence LED indicator
does not light up when the channel
(
MIC or LINE) volume controls are at
maximum.
1 – The signal source is sending no
signal.
2 – Defective cable.
1 – Check that the mixer or sound
source is sending signal.
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
OVERLOAD indicator never lights
up.
1 - The channel (
MIC or LINE) or the
main (
LEVEL) volume controls are not
at maximum.
2 - The signal source does not have a
hot enough output.
1 – Turn the channel (
MIC or LINE) or
the main (
LEVEL) volume controls up.
2 – If using a mixer, use the balanced
output if available. Use a professional
mixer with a hotter output, or use a
preamplifier between the sound
source and the unit.
Sound is distorted and very loud. The
OVERLOAD LED indicator lights up.
1 – The system is overloaded and has
reached maximum power.
1 – Turn the channel (
MIC or LINE) or
the main (
LEVEL) volume controls
down.
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 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 A of this
manual to make a correct un-
balanced to balanced cable.
2 – Connect the mixer and the
powered speaker 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.
