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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

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

AT7000 Manual

Possible Cause(s)

The power cable is not inserted

100% into the AC input connector.

Circuit breaker is open (AC wall

outlet)

Chassis breaker 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

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.

Reset chassis breaker.

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,

Zone or Bus

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.

Rev-11/19