Bedienungsanleitung Gemini XGA-4000 (Seite 16 von 23) (Deutsch, Englisch, Französisch, Spanisch)

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Symptom Cause Solution

Unit does not produce sound.

Power led does not light.

•Powerswitchnotinonposition.

•Powercablenotconnectedtoamplierortooutlet.

•ACoutletnotactive.

•Mainamplierfusedefective.

•Movepowerswitchtoonposition.

•Connectpowercabletoacsupply.

•Checkconditionofoutlet.

•Replaceampliermainpowerfuseonrearpanelwithcorrecttypeandrating.

•Ifthefuseblowsasecondtimediscontinueuseandcontactaqualiedcustomerservicetechnician

Power led lights, but no sound

isproducedbytheamplier.

•Noinputsourcesignal.

•Inputsourcenotconnected.

•Inputconnectingcabledefective.

•Speaker(s)notconnected.

•Speakercabledefective.

•Speakersystem(s)inoperative.

•Amplier’slevelcontrolsaresettozero.

•Checkforproperfunctionofinputsourcedevice.

• Check input cables and connections. Replace questionable cables with known good cables.

•Checkspeakercablesandconnections.Replacequestionablecableswithknowngoodcables.

•Checkoperatingconditionandstatusofspeakersystem(s).

•Besurethelevelcontrolsareproperlyset.

Sound is present but volume

is too low even though source

device is set to a high level.

•Amplierinputlevelcontrolsaresettoolow.

•Wrongpinconnectionsincables.

•Adjustlevelcontrolsasperinstructions.

•Usecorrectcables(asshownonbackofunit).

Loud 60 cycle hum is heard at

all times through the speaker

systems.

•Improperordefectivegroundconnectionatinputs.

•Improperordefectivegroundatinputsourcedevice(s).

•Improperordefectivegroundconnectiononacoutlet.

•Groundloopthroughaclineconnection/rackmounting.

•Checkforproperaclinegroundonpowerampandallinputdevices.

•Checkinputcablesforallsourcedevicesandsignalprocessingaswellasinputcablestopower

amplier.Checkpositionofgroundliftswitchasperinstructionsforliftingtheground.

•NeverlifttheAClinegroundonthepoweramplier.Ifyouarenottotallyfamiliarwithgroundlift-

ingorunicationprocedures,donotattemptthemwithoutrstconsultingyourdealeroraqualied

sound technician for more Information on grounding. Improperly done, such procedures can pose a

safetyand/orrehazard.

Sound is distorted. •Distortionoccurringinsourcedevice.

•Inputlevelissettoohigh.

•Checkclipindicatorsoninputsourcedevicesandresetlevelsifnecessarytoeliminatedistortion.

•Adjustlevelcontrolsasperinstructions.

Protect led remains lit or goes

on and off intermittently after

usingamplierforashort

time.

•Unitisoperatingatexcessivelyhightemperature.

•Extremelylowspeakerimpedance.

•Shortinspeakerconnectors,speakercableorspeaker

system.

•Checkthatamplierisadequatelyventilatedonthefrontandrearpanelswheretheairventsand

fansarelocated.Ifoverheated,lettheampliercooldownbeforeapplyinganinputsignal.

•Checkthepositionofoperationmodeswitch.Besurethatthespeakerconnectionsaremadein

accordance with the switch setting.

•Verifyspeakersystemimpedances.Besurethetotalspeakersystemimpedanceisatleast2ohms

per channel when the operation mode switch is in the stereo position. If the switch is in the bridge

mode, the impedance must be at least 4 ohms. If you are not sure of your total speaker impedance

load, contact your dealer for more information.

•Checkconditionofspeakercables.

•Ifusingbarewireconnectionsontheoutputsoftheamplier,besurethatnostrandsfromonecon-

nector are touching any other connector.

Fuse blows intermittently. •Speakerloadimpedanceistoolow.

•Typeorratingofthefuseisnotcorrect.

•Checkforshortsontheoutputs.

•Checkyourspeakerimpedance(infofromdealer).

•Checkthatthefusetypeandratingiscorrect.

Protect led(s) stay on with no

speakers connected and with

theampliercooleddown.

•Failedamplier. •Contactthegeminicustomerservicedepartmentoryourauthorizeddealertospeaktoaqualied

service technician.

Power led lights but there is

no sound from one or both

channels.

•SecondaryDCfusesareblown(oneitheroneorboth

channels) indicating failed a failed channel or channels.

•Ifonlyonechannelfails,thesecondmaystilloperate,buttheunitshouldbeservicedassoonas

possible.ContacttheGeminiservicedepartmentoryourauthorizeddealertospeaktoaqualied

customer service technician.

Troubleshooting

Solucióndeproblemas•Dysfonctionnements•Fehlerbeseitigung

Gemini XGA-4000 Seite 16

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