Axxera AX490D Manuel du propriétaire télécharger pdf (Page 13)

Problem Cause Action

Unit will not turn

(no power LED

indicator)

+12Vwirenotconnectedorincorrect

voltage.REMwirenotconnectedor

incorrectvoltage

Checkconnectionsforproper

voltage(11~16VDC)

GNDwirenotconnected Checkconnectiontoground

Fuse(s)blown Replacefuse(s)

Unit has power -

LED is green (but

no sound)

Speakerwiresnotconnected Checkconnectionsatspeakers

Volumeturnedallthewaydown Increasevolumelevelatheadunit

Oneormorespeakerwirestouching

each other or touching chassis

ground

Insulateallbarespeakerwiresfrom

each other and chassis ground

Speaker(s)defectiveordamaged Check/replacespeaker(s)

Inputsignalnotconnected

Checkhighorlowlevelinputsfor

proper connection

Unit blows fuse(s)

Incorrectfuserating Usefuse(s)withcorrectrating

+12Vwiretouchingchassisground Checkforpinchedwire

Speaker(s)defectiveordamaged Check/replacespeaker(s)

Engine noise

Badgroundconnection

Makesureamplifierisgroundedto

clean bare metal

SignalgroundlooporRFI(radio

frequencyinterference)

Re-routeRCAcablesfromexisting

highcurrentwiring

LED illuminates

red

(protect mode)

Oneormorespeakerwirestouching

each other or touching chassis

ground

Insulateallbarespeakerwiresfrom

each other and chassis ground

Speaker(s)defectiveor

damagedinternally(shorted)

Check/replacespeaker(s)

Speakerloadlessthan2ohms

(stereo).Speakerloadlessthan4

ohms(bridged)

Adjustspeakerload-amplifierwill

not operate at less than 4 ohms

whenbridged

Distorted audio

output

Incorrectinputsignaltypeor

inputleveltoohigh

Checkconnectionsandreduce/

adjustinputlevel

Low audio output

Incorrectinputsignaltypeor

inputleveltoolow

Checkconnectionsandincrease/

adjustinputlevel

Weak bass Speaker(s)arewiredoutofphase

Check(+)and(-)speaker

connections

(Observecorrectpolarity)

INSTALLATION

Troubleshooting

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Axxera AX490D Manuel du propriétaire Page 13

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