ATI Technologies AT52XNC Owner's Manual - Page 11
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Appendix A - Troubleshooting Guide
Your ATI amplifier is designed for trouble free operation. If you follow the instructions in this manual you should enjoy
many years of high quality listening enjoyment. However, as with any sophisticated electronic device, there may be oc-
casional problems upon initial installation, or during the life of the unit. The items on the list below are a brief guide to
the minor problems that you may be able to correct yourself. Please be sure to thoroughly check all other connected
components such as speakers and preamplifiers, as well as cables. If the problem persists, please consult your installer,
dealer, distributor or us for assistance.
Problem
No power or front panel lights
No power or front panel lights
No power or front panel lights
Amplifier will not turn on or off when a
trigger cable is connected.
Amplifier turns on, but there is no audio
from one or more channels.
Amplifier turns on, but there is no audio
from one or more channels.
Amplifier turns on, but there is no audio
from one or more channels.
Audio levels differ.
No audio output
Appendix B - Model Fuse Ratings
All fuses are 5×20mm Time-Lag surge withstand ceramic body cartridge fuses. If needed, replace the fuse with the
same type and current rating for your model. Please contact ATI customer service if you need more information.
Model
Fuse Rating (120VAC)
Fuse Rating (240VAC)
Model
Fuse Rating (120VAC)
Fuse Rating (240VAC)
AT500NC Manual
Possible Cause(s)
The power cable is not inserted
100% into the AC input connector.
Circuit breaker is open (AC wall
outlet)
Chassis Fuse is open
Improper wiring of remote trigger
Input cables are not connected to
proper jack or are loose.
Input select switches are in the
wrong position.
Speakers are not connected
properly.
Improper settings or output levels
from processor or controller.
Overheating, DC at output, Cata-
strophic failure
AT528
AT527
NC
NC
20A
20A
12.5A
10A
AT523
AT522
NC
NC
10A
6.3A
5A
4A
10
Solution
Ensure that the AC cord is fully inserted into the
amplifier and that the wall outlet is active.
Check the AC outlet circuit breaker and reset, if
necessary, or contact your dealer.
Replace chassis fuse with the same type and current
rating.
Check voltage , polarity and connection of trigger
wire.
Check all input connections.
Check all input select switches and make sure they
are in the correct position for the connection type,
XLR or RCA
Check speaker connections at the amplifier and
speaker.
Check the settings on you preamp, processor or con-
troller.
The amplifier will turn off. For any but a cata-
strophic failure, the amplifier can be reset by remov-
ing the fault and completing the turn-on sequence
again.
AT526
AT525
NC
NC
16A
16A
8A
8A
AT544
AT543
NC
NC
20A
16A
12.5A
8A
AT524
NC
12.5A
6.3A
AT542
NC
12.5A
6.3A
Rev-05/18