ATI Technologies AT4000 Owner's Manual - Page 9
Browse online or download pdf Owner's Manual for Amplifier ATI Technologies AT4000. ATI Technologies AT4000 13 pages. 2 to 7-channel power amplifier
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Main Circuit Breaker
Your amplifier is supplied with a heavy-duty magnetic cir-
cuit breaker/power switch. If power to your amplifier is
interrupted, inspect the circuit breaker on the rear of the
unit. If the circuit breaker is in the off position you may
reset it to the on position to restore AC power. If the circuit
breaker immediately trips to the off position, unplug the
amplifier from the AC power source and contact the ATI
Service Department.
WARNING: Always turn off the amplifier and unplug the power cord
before making any electrical connections.
Protection Circuitry
Your ATI amplifier uses an advanced optically coupled
protection circuit that does not require fuses and is com-
pletely isolated from the audio path. In the event that the
amplifier senses a shorted speaker wire or other fault condi-
tion, the protection circuit will engage shutting down the
output and will sample the state of the amplifier every 7
seconds (nominal). The output will remain cut off as long
as the fault condition exists. The amplifier will return to
normal operation when the fault condition (short circuit,
etc.) is removed/repaired.
If this should occur, first check all speaker wire connec-
tions, both at the speakers themselves and at the speaker
terminals on the rear of the amplifier to verify that none of
the strands from any channel touch any other channel and
that none of the strands from a "positive" terminal touch
those from a "negative" terminal. Even a single stray wire
may cause the amplifier to go into the protection mode.
After checking all speaker connections, turn the unit back
on. If it continues to turn off, check your speakers to verify
they are operating properly. If all other potential sources of
trouble check out properly, please contact ATI for further
assistance and information.
Problem
Amplifier will not turn on
Amplifier will not turn on
Amplifier will not turn off
Amplifier turns on but no audio from one or more channels
No audio from one or more channels.
No audio from one or more channels.
Audio levels are not consistent
Audio plays, then cuts off
ATI Service Information
The AT4000 series amplifiers do not contain any user serviceable
parts. If you suspect a problem that may require service assis-
tance, please contact us at [email protected] or by telephone
at: (323) 278-0001 x 112 or your dealer or distributor. It is im-
portant that any repairs be performed only by a factory-
authorized service agent. This will assure proper service and
preserve the protection of your Limited Warranty. Keep your
sales receipt (proof of purchase) in a safe place so that it will be
available to verify your purchase date in the unlikely event you
experience a problem and need warranty service.
Care and Maintenance
Cleaning
When the unit becomes dirty, wipe it with a clean, soft, dry cloth.
If necessary, first wipe the surface with a soft cloth slightly
dampened with mild soapy water, then with a fresh cloth damp-
ened with clean water. Wipe dry immediately with a dry cloth.
NEVER use benzene, thinner, alcohol or any other volatile clean-
ing agent. Do not use abrasive cleaners, as they will damage the
finish of the metal parts. Avoid spraying insecticide, waxes, pol-
ishing agents or any aerosol product near the unit.
Troubleshooting
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 occasional problems
upon initial installation, or during the life of the unit. The items
below are a brief guide to the minor problems that you may be
able to correct yourself. If these solutions do not rectify a prob-
lem, of the problem persists, please contact us for assistance.
Solutions
Line cord disconnected
Plug line cord into outlet and amplifier
Master Power Switch turned off. Turn on Master Power Switch
Remote trigger cable not properly connected
Verify connection of trigger cable at both ends
Input cables not connected to proper jack or are loose
Check input connections
Input select switch in wrong position.
Change input select to correct (RCA or XLR) position.
Speakers or amplifier inputs are not properly connected
Check speaker and input connections at amp and speakers
Improper settings or output levels from processor or controller
Check the settings on your preamp, processor or controller
Speaker wires shorted
Check speaker connections for shorts at amp and speakers
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