Troubleshooting - Crown XLS Series Operation Manual

XLS Series Power Amplifiers

5 Troubleshooting

Operation Manual
CONDITION: Normal operation.
POSSIBLE REASON:
• This is normal operation for your amp.
CONDITION: No power to the
amplifier.
POSSIBLE REASON:
• The amplifier's Power switch is off.
• The amplifier is not plugged into the power
receptacle.
• The amplifier's high-voltage power supply cir-
cuit breaker has tripped. Verify that the AC
mains voltage is correct, then press the Circuit
Breaker button on the back panel.
CONDITION: Distorted sound.
POSSIBLE REASON:
• Input signal level is too high. Turn down your
amplifier Level controls. NOTE: Your amplifier
should never be operated at a level which
caused the Clip LEDS to illuminate constantly.
CONDITION: No sound.
POSSIBLE REASON:
• The amplifier has just turned on and is still in
the 4-second turn-on delay.
• The amplifier is in "fault" mode. A Fault status
can be triggered when one of the amplifier's
protection circuits is activated. First disconnect
your speakers from the affected channels(s)
one by one to determine if one of the loads is
shorted. If the indicators return to normal sta-
tus, then try a different speaker or cable to
determine where the short is occurring. If no
short can be found, turn off the amp and allow
the amp to cool. If indicators do not return to
normal after restarting your amp, check the fuse
and replace if necessary, or return amp to
Crown or an authorized Crown Service Center
for servicing.
• No input signal.
• Input signal level is very low.
• Level controls are turned down.
• Speakers not connected.
KEY
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