D.A.S. CSA Serie Manual Del Usuario página 23

APPENDIX E. Troubleshooting
The Power Switch is in the On position but the Power LED
indicators do not light up
The Power LED indicator lights up and the rest of LEDs do not.
The protection LEDs light up permanently.
"Power ON" LEDs light up but the "Signal" LEDs do not.
One or two Clip LEDs light up with no signal.
Excessive "Hum"
Serie CSA / CSA series
Check the fuse and replace it if necessary.
If the new fuse blows up again, take the unit to a service centre.
The thermal protection of the transformer is working. Allow the
amplifier to cool down. The cause might be prolonged overloading.
The amplifier might have suffered a momentary overloading. Turn
Off the amplifier, wait a few minutes and turn it On again.
Check that there isn't any short circuit in the wires or the
speakers.
Unplug the loads, turn the amplifier Off and, after waiting a few
minutes, turn it On again. If the amplifier does not work properly
take the unit to a service centre.
Check the signal cable and replace if defective.
Check the loads for a short circuit in the cables or the speakers.
All the electronic equipments must be connected to the same
earth connection. Check all the wires for faulty shielding. Balanced
lines are highly advisable. If possible do not connect the sound
equipment to the same mains phase as lights' equipment. Prevent
signal wires from running close to electromagnetic sources like
lighting equipment and others.
Manual del usuario / User's manual
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