Atlantic Technology A-2000 Gebruiksaanwijzing - Pagina 8

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1. Specifications

Troubleshooting

YourA-2000 is designed to provide years of trouble free operation.However,

aswithanysophisticatedelectronicdevice,theremaybeoccasionalproblems

uponinitialinstallation,orduringthelifeof theunit.Theitemsonthislistare

a brief guide to the minor problems that you may be able to correct yourself.

If thesesolutionsdonotrectifyaproblem,orif theproblempersists,contact

your Atlantic dealer/installer or us for assistance.

Protection Circuitry

Youramplifierusesadvancedprotectioncircuitrythatdoesnotrequirefuses.

In the event that the amplifier senses a shorted speaker wire, DC voltage

on an input connection or thermal overload creates a condition that could

potentiallycausedamagetotheunitortoyourspeakers,itwillautomatically

shut down. If this should happen, first check all speaker wire connections,

both at the speakers themselves and at the speaker terminals on the back of

theA-2000tomakecertainthatnoneof thestrandsfromanychanneltouch

another channel, and that none of the strands from a "positive" terminal

touch those from a "negative" terminal. Even a few stray wire strands can

cause the unit to go into protection mode.

After checking all speaker connections,turn the unit back on.If it continues

to turn off,disconnect the speakers one by one and try the amplifier again,

after disconnecting each one, to see if one speaker (or wire) is causing the

problem.If allpotentialsourcesof troublecheckoutOK,contactyourdealer

or us for further assistance and information.

Service Information

A-2000containsnouserserviceableparts.If yoususpectaproblemthatmay

require service assistance,contact yourAtlantic Technology dealer/installer

orusorbyphoneat781-762-6300.Itisimportantthatanyrepairsbecarried

out only by an authorized service agent.This will assure proper service and

Troubleshooting Guide

Problem

Amplifier will not turn on

Amplifier turns on, but no audio from

one or more channels

No audio from one or more channels

Audio levels differ

Audio plays, then cuts off

preserve the protection of your Limited Warranty/Free Extended Service

Agreement.Keepyoursalessliporreceiptinasafeplacewiththismanualas

wellasyourExtendedServiceAgreementcertificatesothatitwillbeavailable

to verify coverage,should you experience a covered problem.

A Few Words About Hum and Noise

Audible hum,or a discernable low frequency noise,is one of the most com-

mon problems in audio/video systems. This hum, which may be present

even when the volume is at a low level or when the power is off, is usually

caused by a situation known as a ground loop . A ground loop occurs when

there is a difference in ground voltage potential between two or more pieces

of equipmentinthesystem.Forexample,therecouldbeanelectricalground

for the main electrical service that is connected to a cold water pipe in the

basement and a ground rod driven into the earth outside the house for the

cable TV system. If two or more components are connected electrically

(through RCA cables, antenna leads, etc.) and they are also connected to

both ground systems (the house AC plugs and the cable TV system in our

example) multiple potential ground current paths exist.This can and often

does cause low-level noise, hum, and an increased possibility for damage

due to lightning strikes.

Thegrowingsophisticationof hometheatersystems,andtheincreasednum-

ber of components used to create these systems has dramatically increased

thepotentialforthepossibilityof groundloops.Whileitisnaturaltosuspect

that the components in your system are the cause of the hum,in many cases

the cause may be due to these other conditions.In particular,cable TV con-

nectionsfromoutsidethehouse(asnotedabove)havebecomeamajorsource

of hum.In most cases, one of the following suggestions should help you to

solve a hum problem in your system.Please try these steps in the sequence

shown,proceeding from one step to the next if the prior suggestion does not

eliminate the problem.

Solutions

Master Power Switch turned off (No power light LED)

Turn on Master Power Switch

Remote trigger cable not properly connected

Verify connection of trigger cable at both ends

Input plugs not connected to proper jack or are loose

Check input connections

Speakers not connected properly

Check speaker connections at amp and speaker

Improper settings or output levels from the processor or controller

Check the settings on your preamp, processor or controller

Amplifier shorted

Check speaker connections for short circuit at amp and speaker

A-2000 7 Channel Amplifier