Crown m120 Manuale Utente

CONDITION: Power indicator is 
off.

•

The amplifier has lost AC power.

•

The amplifier’s Power switch is off.

•

The amplifier’s power cord is not plugged 

in at either end.

The amplifier’s circuit breaker has tripped. 
Allow the amplifier to cool; remove excessive 
loads, and press the reset switch on the front 
panel.

CONDITION: No input signal (Signal 
indicator is not flashing even though audio is 
applied).

•      Input signal level is very low.
•      Master audio from mixer turned down.
•      Input cable broken or not plugged in.

•

The amplifier has just been turned on and 

is still in the 4-second turn-on delay.

•

The heatsinks are too hot.

•

The transformer thermal protection is 

activated.

•

The amplifier output wires have devel-

oped a short circuit.

•

The amplifier output stage has stopped 

operating.  Refer the unit to an authorized 
Crown Service Center.

The fault status of the amplifier can also be 
monitored remotely by attaching a signal 
device to the Fault jack located on the ampli-
fier back panel. See the Advanced Features 
and Options section for more detail.

•

 Load is wired incorrectly or Stereo/Mono mode 

switch is set incorrectly.  Check both.

•

Input signal level is too high. Turn down your 

amplifier level controls, or turn down the input 
signal, until the clip LED goes out.

Note: If sound is distorted but clip LED is not flash-
ing, check mixer levels and gain staging, mixer clip 
lights, and pads built into microphones.

•

Speakers not connected. Make sure the Neutrik 

NL4 connector is fully seated and locked.

The amplifier output level is so high that the breaker 
has tripped. Try to identify and correct the problem 
before resetting the breakers. If the problem persists, 
refer the unit to an authorized Crown Service Center.