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首页 SKYWORTH core fault bus summary

SKYWORTH core fault bus summary.doc

SKYWORTH core fault bus summary

心痛才能忘_
2018-12-26 0人阅读 举报 0 0 0 暂无简介

简介:本文档为《SKYWORTH core fault bus summarydoc》,可适用于社会民生领域

SKYWORTHcorefaultbussummarySKYWORTHmovementfaultbuslargecollectionreprintedunderthe:TseriesTVT,Tconfigurationtablemovement,T,T,T,T,T,T,T,T,T,T,T,T,T,TICCPU:TMPCsmallsignalprocessing:TBorTBCPUTV:TMPA,TMPA,TMPAorTMPAtypeseries,A,STV,TR,TMMS,NFMK,Tseries,Fseries,Aseries,TM,I,TI,TAA,SP,NK,,,,,,,MK,TAseries,NDseries,NFseries,TAseries,TF,TAA,TM,S,SP,NL,TAAThebusadjuststhevolumetotheminimum(),holdstheVOLkeyonthemachinepanel,andenterstheSmodebypressingthescreenkeyontheremotecontrolAtthispoint,theScharacterappearsintheupperrightcornerofthescreenRepeatthestepsabovetoentertheDmode,wherethe"D"characterappearsintheupperrightcornerofthescreenPresschannelselectitem,pressvolumekeytochangeparameters,pressnumbertoselectdebugitemPressthestandbybuttontoexittheDmodekeyThebusfaultphenomenon:tonormal,flybacklinesappearbluescreenMaintenanceTips:entertheSmaintenancestatus,repeattheaboveoperation,enterthefactoryDstatus,callupthefunction,andsettheprojectdatatocheckChangetheVMdatatothenormalvalue""ExitDmaintenancemode,flybacklinedisappearbluescreen,troubleshootingFaultphenomenon:colorTV,nopicturesilent,buthascharacterdisplayMaintenanceTips:enterthemaintenancemodeofS,accordingtotheprogrambuttontoviewtheadjustmentprojectdataisnormalandthenenterDmode,checkandadjusttheprojectdata,foundthatVMdatafromnormalerror,""to"",withthevolumekeydataoftheprojectwillbeadjustedto"TheTVwillreturntonormalandquitmaintenanceFaultphenomenon::Tmovement,colorTV,twotimesaftertheboot,nopicturesilent,butthescreenhascharacterstodisplay,themenuwillbesetoffafterthebluescreenThereissoundwithoutlightEntertheAVsignalisthecaseMaintenanceTips:enterthemaintenanceSstatus,pressthenumberkey"",enterthefaultselfinspectiondisplay,thescreenshowstheSYNCprojectisNG,normallyOKRepeattheaboveoperationintothefactoryinthestateofSD,accesstoprojectdataaccordingtotheprogrambutton,VM(videomode)dataandthemanufacturerdoesnotcorrespondtothedata,thedatais"",pressthevolumekeydatawillbechangedtothenormalvalueof""aftertheexitofstatemaintenanceReceiveTVandenterAV,imagesandaudioreturntonormalFaultphenomenon::TBmovement,colorTV,afterthebootisadarkbluescreen,pressthepaneloranykeyontheremotecontrollerareshutdownMaintenanceTips:replacethememoryFaultphenomenon,:Tmovement,colorTV,cannotshowtochannels,researchafternormal,butafterACshutdown,thenboot,thefaultisstillCheckhint:replacewithnewmemory(C)hardwarefaultcommonproblemFaultphenomenon::Tmovement,colorTV,intheAVstate,sometimesautomaticallyconvertedtoTVstate,twoorthreesecondslaterintotheAVstateOverhaultips:ZD(V)toVWvoltageregulator,orRandRarechangedtokFaultphenomenon,:Tmovement,colorTV,vulnerableR(kW)Overhaulhint:increasetheresistancepowertoWMalfunction,:Tmovement,colorTV,lowfrequencyend(centralone),sounddistortionMaintenanceprompt:apFcapacitorisconnectedbetweenRandC,andauHinductorisconnectedtotheneutralofthetwocapacitor,andtheCischangedtopFFaultphenomenon,:T,typemachine(Tmovement),receivestrongsignalsinthecentralandwhenthenoiseislargeMaintenanceTips:()R()ontherightsideofahighpassfiltercircuit,capacitanceinductancepF,uHisactuallyC(pF)topF,theotheronapFcapacitor,andthenintwoofacapacitorandinductoruH()ontheR,RFaultphenomenon::Tmovement,colorTV,whenreceivingstrongsignal,thereisreticularinterferenceMaintenanceTips:WreplacementprocedureswithWPanasonictunerThefaultphenomenonofcolorTV:T,intermittentsoundMaintenanceTips:CtouFceramiccapacitors,withC,removetheLifthefrequencyoffsetiscausedbynosound,checkthereliabilityandinweeksL,Ctuner,Cifthelocalmodulationsignalistoolow(notGB),thesoundfrequencyelectricroadCconnectedtotheTBterminalisdisconnectedwithemitterfollowercircuit,transistorSC,CtoVpower,ethroughnFceramiccapacitorconnectedtotheTBport,BupperandlowerbiasresistorsareK,ebyKresistancegroundingFaultphenomenon::Tmovement,colorTV,brightspotflashingafterstarting,butwithoutgratingOverhaulhint:changethejumperofshortcircuitRandRtoWresistorFaultphenomenon,:movement,colorTV,linenonsynchronizationOverhaulhint:changeCtouFVpolyestercapacitorMalfunction,:Tmovement,colorTV,characterjitterTroubleshootingtips:changeCfrompFtopFFaultphenomenon,:Tmovement,colorTV,TV,noimage,AVnormalMaintenanceTips:Cdamage,Cbyceramiccapacitorsinsteadofpolyestercapacitors,capacitanceconstantFaultphenomenon:,movement,colorTV,pincushiondistortionMaintenanceprompt:C(uFV)iseasytodamage,changeCtouFVnonpolarcapacitorMalfunction,:Tmovement,colorTV,AVstatus,imageshaveghostingInspectiontips:checktheAVsignallineenterthefactorymodeandsettheSVitemtoFaultphenomenon,:Tmovement,colorTV,bluescreenflashingOverhaulhint:changethesizeofthedecoderblockIC(TB),pinexternalresistanceR(K)andcapacitanceC(uF)andC(pF)Ifitisnotvalid,connectakresistorbetweenthefootoftheICandthegroundFaultphenomenon:TMtypemachine(Tmovement),inputDVDmachineY,uandVsignals,colorlightOverhaulhints:RandRontheAVboardwillbechangedtoWFaultphenomenon,:Tmovement,colorTV,oftenappear"BUSOFF"word,thenautomaticallyshutdownMaintenancetip:R(K)ontheCPUfootpatchMalfunctionSuperreceiverCPUin:TmovementisliabletodamageMaintenanceTips:changetheCPUoftheTcommonmachineandchangetheMODEdatafromtoFaultphenomenon,:Tmovement,colorTV,strongsignal,largemeshinterferenceMaintenanceTips:forPanasonictunerMalfunction,:,NF(Tmovement),thesoundset""ormute,thereisstillaloudspeakerintheexchangeofsoundInspectionhints:addashieldingline,shieldinglinefromthecircuitboardHtoDpoints,andcheckthepoweramplifiercircuitFaultphenomenon:typemachine(Tmovement),pronetohorizontalbrightlinefaultOverhaulhint:changeRtoWFaultphenomenon:NLtypemachine(Tmovement),wheninputtingSterminalsignal,theimageisirregularandasynchronousMaintenanceTips:Sterminalbadgroundingwirecanbewelded,solidFaultphenomenon::Tmovement,colorTV,narrowrangeMaintenanceTips:changeC(uFV)touFVFaultphenomenon::Tmovement,colorTV,sometimeshorizontalbrightlineappearsafterpoweronOverhaulhint:changeRtokWmetalfilmresistor,removeRatthesametimeMalfunction,:Tmovement,colorTV,soundinthenoise(thisphenomenonintheT,Tmovementmayoccur)Inspectionhints:()connectthegroundofthesoundICtothepartofthelinechangethemetalshelltotheacousticsurfacefilteranddisconnecttheIC(CD)ThenconnecttheshieldlinetotheinputoftheCFaultphenomenon,:Tmovement,colortvWhenthechillerisswitchedon,thefieldisjitterandcompressedThefollowingpointsareasfollows:()shortjumperC(orC),thenCnegativepole,andthepFVcapacitoronbothendsoftheR(II)aconductorbetweentheheatsinkandthegroundisplacedonthecircuitboard,andthewireisplacedonthecircuitboardIftheabovemethodisinvalid,replacetheSTVMalfunctionphenomenon:SFtypemachine(Tmovement),charactershakewhenstarting,changingoradjustingitemsMaintenancetip:addpFcapacitortotheCpoleofQ,andchangethecapacitancebetweenCandBpolestopFFaultphenomenon:SFtypemachine(Tmovement)characterjitterMaintenanceinstructions:connectthepFcapacitorontheRandconnectawirebetweenthegroundofCandCtoreducethedistributedcapacitanceMalfunctionphenomenon:TFtypemachine(Tmovement),repeatedfiringblockSTVMaintenanceprompt:replacingSTVchangingRtoKWattheendsofCandaVWregulatortubepositivegroundingMalfunctionphenomenon::TFtypemachine(Tmovement)hasreticulateinterferenceanddarkstripMaintenanceTips:changeTDAfeet(VIFAGC)capacitance,andajumperbetweentunerandahighpressurepackMalfunctionphenomenon:SFtypemachine(Tmovement)WatchTVprograms,openthesurroundsoundspeakerfunction,havefracturedIthasnothingtodowiththevolumesizeOverhaulhints:changeCorCtouFCorCtouFFaultphenomenon:MKtypecolorTV(Tmovement),characterjitterMaintenanceTips:changetheresistanceR(K)onthemainboardtojumperFaultphenomenon:TFtypemachine(Tmovement),Vregulatortubeisvulnerable,soastoappearpincushiondistortionfaultOverhaulhints:appropriatelyincreasetheCcapacitytoreducethereversevoltagedropandcurrentoftheregulatorDFaultphenomenon:TTmovement,colorTV,coolerbootdifficult,oncetheboot,theneverythingisnormalMaintenanceinstruction:theperformanceofDandDinthepositivefeedbackbranchoftheswitchingpowersupplyisnotgood,asshowninfigureItisrecommendedforfastrecoverydiodeFRFigpositivefeedbackcircuitFaultphenomenon,:TTmovement,colorTV,Bvoltage(V),uptoVMaintenancetip:asthepulsewidthmodulationcapacitorC(uFV)isveryclosetotheheatsinkoftheswitchtube,itiseasytolosecapacity,thusshorteningthecutofftimeoftheswitchtubeandincreasingtheBvoltageFaultphenomenon:TseriescolorTVsetTheindicatorlightisonNobootCheckprompt:theChasVvoltage,andtheCPUstandbycontrolterminalvoltageisnormalThisfaultismostlyR(kW)opencircuitAftertheRisopen,thestandbycontroltubeQcannotworkbecauseoflossofpowerAstheoriginalmachineRusinglessresistance,easytoopencircuit,itisrecommendedtoreplacetheWmetalfilmresistorFaultphenomenon,:T,T,Tmovement,colorTV,TV,AVstatusarenoimagesMaintenanceTips:ifthemeasuredsuperTMPAchip()orTMPA()footlinesyncpulseinput,theperipheralcircuitofthepartsare:TcoreinC(pF),TC(pF)inmovement,movementofTC(pF)Inaddition,afterthedatainmemoryerror,itisalsopronetothisfaultMalfunction,:Tmovement,colourTV,automaticshutdownMaintenanceprompt:ICresetterminal,footexternalcapacitorC(uF)leakage,newchangecanbeFaultphenomenon:TAAcolorTV(Tmovement),heatenginerearfieldjitter,compressionOverhaultips:IC(TMPA)feetexternaltantalumcapacitorC(uFV)polarityinstalled,thereverseaftertroubleshootingYseriescolorconfigurationlistofY,Y,YY,coreY,Y,YICCPU:LC:asmallsignalprocessingcircuit:LACPU:LCAorLC:asmallsignalprocessingcircuit:LA,ND,NSorLAmodelsNF,N,PD,PS,NF,YMK,Y,YMK,Y,YN,SF,SH,NX,TX,TAA,TXY,bus,YmovementadjustmentmethodY()pressthemenubuttonoftheremotecontrol(MENU)twotimes,entertheimagemenu()followedbythealternatekey(QVIEW)andmutekeys(MUTE)toenterthebus()accordingtothetimingkey(TIME)switchfactorymenu,pressthemenuthekeytoexit(MENU)TheY,Y,Y,Ymovementpressdownthemenukeyonthekeyboard,andthenpressthe,andkeysoftheremotecontroltoenterthebusEnterLASERVICEMENU,changePROGONitemdatafromto,andpresstheremotecontrolmenukeytoquitfactorymodebusfaultphenomenon,:YYmovement,colorTV,imagedimornoimage,displaywhitesquaretestsignalMaintenanceTips:enterthestatemaintenance,projectdataPATTERNimagetestselectioncheckintheMENUlmenudatafortheoutputsignalsofthewhitefield","dataoutputgrayfieldsignaldatais"",theoutputoftheblackfieldsignal,datafortheoutputsignalofthefieldcharacter"PATTERN,theprojectdatato"",fromtheimagetestconditionMalfunction,:Ymovement,colorTV,superreceiverfunctionloss,bandcontrolconfusionMaintenancetip:checkthefunctionsettingsmenuOPTION,selecttheTUNTYPEProjectmenu,itsoriginalvalueis"",thedataisrelatedtothebandvoltageChangetheTUNTYPEprojectdatato""hardwarefaultcommonproblemMalfunctionphenomenon::NFtypemachine(Ymovement),thesignaldoesnotstopatregularintervals,butitchangesbacktonormalafterchangingstageCheckprompt:connectKresistoronL,changeRtok,changeCtouFVFaultphenomenon:Ytypemachine(Ymovement),thereiscrossstripeinterferenceontheimageMaintenancetip:replacethepowerswitchandremovethetwojumpersattheSWFaultphenomenon:model(Ymovement),thereisahighfrequencywhistlingsoundinthesound,anditincreaseswiththevolumeMaintenancetip:addauFVcapacitortotheIC(LA)pintogroundFaultphenomenon,:Ymovement,colorTV,LAdamage,resultinginAVnoimageMaintenancetip:afterreplacingtheIC,addaVzenerdiodebetweentheAVinputofLAandthegroundFaultphenomenon,:Ymovement,colortvAutomaticswitchoverofAVTVOverhaultips:theregulatortubeZD(V)changedtoVFaultphenomenon,:Ymovement,colorTV,occasionallybluescreenMaintenanceTips:thedecoder(AFTOUT)andthefootexternalresistanceR(K)tokAGCtoUFtunercapacitorCV:predischargepipeBonpartialresistanceRtokWVCOLandKinperipheralresistance(uF)toCuFRtoKWRtoohmWRWtoAfterthechanges,resettheRFAGCvaluesThefaultphenomenonof:Ytypemachine(Ymachine),Si}differencemenuTroubleshootingtips:removeQ,C,ZD,J,R,andincreaseIC(LE)Faultphenomenon:inchflatscreenTVYmovementSoundvolumejumpMaintenancetip:addanFcapacitortotheB,e,andQpolesFaultphenomenon,:Ymovement,colorTV,remotecontrolshutdownhasbrightspotOverhaulhint:changeR()toKresistorFaultphenomenon,:Ymovement,colortv,AfterashutdownShorn"thump"soundMaintenanceTips:audiopoweramplifierLAtoaKfoottogroundresistanceMalfunction,:Ymovement,colorTV,volumesilent,at~whenthevolumejumplargerOverhaulhint:changeR(K)tokWFaultphenomenon,:Ymovement,colorTV,soundinthenoise,bluescreenflashingOverhaulhint:changeRl(n)toW,andC(uFV)touFVFaultphenomenon,:Ymovement,colorTV,shutdownhasbrightspotoverhaultips:changeR()tokWFaultphenomenon,:Ymovement,colorTV,AVstate,bluescreendissatisfiededgeOverhaulhint:changeRtokWFaultphenomenon::Ymovement,colorTV,blackscreen,butwithcharactersandaccompanyingsoundMaintenanceTips:changethenewversionofCPUcanbeFaultphenomenon::Ymovement,colorTV,TVhashighfrequencywhistlingsound,andchangeswiththevolumesizeOverhaultips:changetheCandCtouFpolyestercapacitorsFaultphenomenon::Ymovement,colorTV,individualimage,upperdistortionOverhaulhints:KandohmprecisionresistorsareconnectedinseriestoreplaceR(kW)Faultphenomenon,:Ymovement,colorTV,repeatedfiring,outputblockLA,LAMaintenancetip:inthepartofthemovementofcolorTV,thefieldoutputIC,footexternalcapacitorCqualityispoor,easytobreakdown,andaccompaniedbyRcircuitbreaker,asshowninfigureFigfieldoutputcircuitMalfunctionphenomenon::Y,Ymovement,colorTV,imagedilationaroundrightandleftCheckindication:thepeakabsorptioncapacitanceoftheswitchisC(nF)leakageWhenreplacing,weshouldchoose~pFkVhighqualitycapacitorMalfunctionphenomenon,:Ymovement,colorTV,runningtableInspectiontips:cutcopperfoilcoveredwithwhitepaintbetweenRandR,andconnectwithwireThefaultphenomenonof:NDTV(YSeries),thecoolerwhentheimagesoundnormal,aftertheenginetimingbluescreen,nomapdisplaystandardpatternaresilentMaintenanceTips:theoriginalbadperformancetunerThismachineisnotcommonlyusedintheTDQtypetunerfoottypeETSHIECVtuner,butthefootwithoutAFCfeetnarrowshelltunerThismachineisavailableTDCTalladdedtunerforsubstitution,firstwillsupplementtheheadsofthefeetwiththewireasshowninFigurecorrespondswiththegoodweldingcircuitboardintothehole,andinadditiontheheadoftheAFCKtwofootaccessresistanceAresistorconnectedtoV,theotherendconnectedwitharesistor,andtheadditionofhighground,thenfixed,checkandcorrect,thenpowertestmachineRemotecontroldigitaltunermovementdiagramwiringdiagramofopenuser,inthefactorypatternisaconductivepadadjustmentbutton,pressthisbuttonwillappearsixsubmenu:Item:workstatusdisplayofmainIConthewholemachineSecond:linearadjustmentoffieldThethirditem:linearadjustmentFourth:analogadjustmentThefifthitem:whitebalanceadjustmentThesixthitem:functionsettingsAfterenteringthesubmenu,selectthekeyaccordingtothechannelkey,changethevaluebypressingthevolumekey,andpresstheTVAVkeytoexitthefactorydebuggingstate,CRTrearprojectionmovement,withthefactoryremotecontrolCkeyoruserremotecontrolofthebottomrightcornerofthekeytoenterthemenu,theCHIPIOissetto,NUMissetto,READissettoK,youcanenterPressthechannelkeyoptiontoadjusttheparametersbyvolumekeyPressCagain,orreturntomainmenu,changeAFCto"X",canquit

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