APart CHAMP-3D [20/24] Warninganderrormessagesshownonthelcddisplay

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WarninganderrormessagesshownontheLCDdisplay

•SUBAMPSHUTDOWN:thesubwooferamplifierhasshutdownduetoanerror:over-

temperature,supplyvoltageerrororshortcircuitontheoutput.

•SUBAMPDCERROR:thesubwooferamplifierhasencounteredaDCoffseterrorandhasshut

down.

•LEFTAMPSHUTDOWN:theleftchannelamplifierhasshutdownduetoanerror:supply

voltageerrororshortcircuitontheoutput.

•RIGHTAMPSHUTDOWN:therightchannelamplifierhasshutdownduetoanerror:supply

voltageerrororshortcircuitontheoutput.

•LEFTAMPDCERROR:theleftchannelamplifierhasencounteredaDCoffseterrorandhas

shutdown.

•RIGHTAMPDCERROR:therightchannelamplifierhasencounteredaDCoffseterrorandhas

shutdown.

•INVALIDEXT.VOL:theexternalvolumecontroloptionhasbeenenabledwhilenoexternal

volumecontrolispresentattherearconnector,ortheexternalvolumepotentiometervalueis

outofrange.

•INPUTOVERLOAD:theanaloginputisoverloaded,thiscanbecausedbyanincompatible

systemconfigurationoraseveregroundloop.

•SUBAMPOVERLOAD:thesubwooferamplifierisbeingoverloaded,duetoextremelylowload

impedanceorashortcircuit.

•LEFTAMPOVERLOAD:theleftchannelamplifierisbeingoverloaded,duetoextremelylow

loadimpedanceorashortcircuit.

•RIGHTAMPOVERLOAD:therightchannelamplifierisbeingoverloaded,duetoextremelylow

loadimpedanceorashortcircuit.

Whenoneoftheabovementionederrorshasoccurred,westronglyadvisetoswitchoftheunit.

Thendisconnectallinputsandoutputsandpoweronagain.Incaseexternalvolumecontrol

isenabled,disabletheexternalvolumecontrolinthesettingsmenuandcheckiftheerrorstill

occurs.Incaseoverheatingisthecauseoftheerror,waitforafewhoursandallowtheamplifier

tocooldown.Incasethemainssupplyispermanentlyoutofrange,theamplifierwillnotpassits

initialpower-onself-testsandwillnotswitchon.Firsttracethecauseoftheerror,removetheerror

situationandpoweronagain.

Whenthereisatemporaryproblemwiththemainssupplyvoltage,causedbyaspikeorvoltage

dip,theunitwillpowerdownandrestart.Inthiscase,duringpoweronselftest,therewillbean

additionalmessage“WatchdogReset”intheRS232startuptextdump.