Crown ce-1000 Guía Del Usuario

The Fault (RJ-11) jack, which looks like a telephone 
jack, is located on the back of your CE Series ampli-
fier (Figure 4.2). It gives you an easy way to 
remotely monitor the amplifier’s fault status. To set 
up a circuit that will cause an LED to light whenever 
a fault status occurs, you can simply use the sug-
gested circuit shown in Figure 4.3.

When using this circuit, the LED will glow under 
any of these conditions:

• 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 developed a short 
circuit.
• The limiter has been overdriven by > 6 dB for a 
long time.
• The amplifier output stage has stopped operating. 
Refer the unit to an authorized Crown Service Cen-
ter.
• The amplifier is turned off.

If you choose to design your own circuit to interface 
this signal to your system, note that this RJ jack is 
polarity sensitive. Pin 2 must be grounded, and Pin 
5 must be supplied with a positive voltage pull-up 
(positive with respect to ground). Refer to Figure 4.4 
for RJ jack pin assignments. The maximum signal 
that can be exposed to the Fault jack is 35VDC and 
10 mA. Best results are obtained with 10 mA LEDs.

The mating connector for the CE Series TX RJ-11 
jack contains 4 contact pins in a 6-slot case, as 
shown. For additional information please contact 
your local dealer or Crown Technical Support.