索尼KLV-46F300A液晶彩电维修手册

5B6E056B0DBC8C3EA98124D4035F0D2DAA0CF7903190433B89A3B4E280BF52152952806CB7B5A285Ver.DATACONTENTS1.02007.09Issued1.12007.11AdditionofKLV-40F310A/46F310AModels.(P.1toP.3,P.1-1toP.1-7,P2-1,P.3-1toP.3-9)1.22008.01CorrectionandAdditionofpartsnumberforSEC.3EXPLODEDVIEWS.(P.3-3,P.3-4)MODELNAME:KLV-40/46F300A,40/46F310ASERVICEMANUALPARTSNo.:9-834-179-03MODIFICATIONHISTORY*Bluecharactersarelinking.5B6E056B0DBC8C3EA98124D4035F0D2DAA0CF7903190433B89A3B4E280BF52152952806CB7B5A285LCDColorTVWAX3CHASSISChinaModelKLV-40F300A/46F300ASERVICEMANUALKLV-40F310A/46F310A5B6E056B0DBC8C3EA98124D4035F0D2DAA0CF7903190433B89A3B4E280BF52152952806CB7B5A285KLV-40/46F300A,40/46F310A(CH)2SPECIFICATIONS5B6E056B0DBC8C3EA98124D4035F0D2DAA0CF7903190433B89A3B4E280BF52152952806CB7B5A285KLV-40/46F300A,40/46F310A(CH)35B6E056B0DBC8C3EA98124D4035F0D2DAA0CF7903190433B89A3B4E280BF52152952806CB7B5A285KLV-40/46F300A,40/46F310A(CH)4CAUTIONTheseservicinginstructionsareforusebyqualifiedservicepersonnelonly.Toreducetheriskofelectricshock,donotperformanyservicingotherthanthatcontainedintheoperatinginstructionsunlessyouarequalifiedtodoso.WARNING!!Anisolationtransformershouldbeusedduringanyservicetoavoidpossibleshockhazard,becauseoflivechassis.Thechassisofthisreceiverisdirectlyconnectedtotheacpowerline.!SAFETY-RELATEDCOMPONENTWARNING!!ReplaceallcomponentswithSonypartswhosepartnumbersappearasshowninthismanualorinsupplementspublishedbySony.WARNINGSANDCAUTIONSSAFETY-RELATEDCOMPONENTWARNINGItisessentialthatallcriticalpartsbereplacedonlywiththepartnumberspecifiedintheelectricalpartslisttopreventelectricshock,fire,orotherhazard.NOTE:Donotmodifytheoriginaldesignwithoutobtainingwrittenpermissionfromthemanufactureroryouwillvoidtheoriginalpartsandlaborguarantee.USECAUTIONWHENHANDLINGTHELCDPANELWhenrepairingtheLCDpanel,besureyouaregroundedbyusingawristband.WhenrepairingtheLCDpanelonthewall,theLCDpanelmustbesecuredusingthe4mountingholesontherearcover.1)Donotpressonthepanelorframeedgetoavoidtheriskofelectricshock.2)Donotscratchorpressonthepanelwithanysharpobjects.3)Donotleavethemoduleinhightemperaturesorinareasofhighhumidityforanextendedperiodoftime.4)DonotexposetheLCDpaneltodirectsunlight.5)Avoidcontactwithwater.Itmaycauseashortcircuitwithinthemodule.6)DisconnecttheACpowerwhenreplacingthebacklight(CCFL)orinvertercircuit.(Highvoltageoccursattheinvertercircuitat650Vrms.)7)AlwayscleantheLCDpanelwithasoftclothmaterial.8)Usecarewhenhandlingthewiresorconnectorsoftheinvertercircuit.Damagingthewiresmaycauseashort.9)ProtectthepanelfromESDtoavoiddamagingtheelectroniccircuit(C-MOS).5B6E056B0DBC8C3EA98124D4035F0D2DAA0CF7903190433B89A3B4E280BF52152952806CB7B5A285KLV-40/46F300A,40/46F310A(CH)5SAFETYCHECK-OUTAftercorrectingtheoriginalserviceproblem,performthefollowingsafetychecksbeforereleasingthesettothecustomer:1.Checktheareaofyourrepairforunsolderedorpoorlysolderedconnections.Checktheentireboardsurfaceforsoldersplashesandbridges.2.Checktheinterboardwiringtoensurethatnowiresare“pinched”ortouchinghigh-wattageresistors.3.Checkthatallcontrolknobs,shields,covers,groundstraps,andmountinghardwarehavebeenreplaced.Beabsolutelycertainthatyouhavereplacedalltheinsulators.4.Lookforunauthorizedreplacementparts,particularlytransistors,thatwereinstalledduringapreviousrepair.Pointthemouttothecustomerandrecommendtheirreplacement.5.Lookforpartswhich,thoughfunctioning,showobvioussignsofdeterioration.Pointthemouttothecustomerandrecommendtheirreplacement.6.Checkthelinecordsforcracksandabrasion.Recommendthereplacementofanysuchlinecordtothecustomer.7.Checktheantennaterminals,metaltrim,“metallized”knobs,screws,andallotherexposedmetalpartsforACleakage.Checkleakageasdescribedbelow.LeakageTestTheACleakagefromanyexposedmetalparttoearthgroundandfromallexposedmetalpartstoanyexposedmetalparthavingareturntochassis,mustnotexceed0.5mA(500microamperes).Leakagecurrentcanbemeasuredbyanyoneofthreemethods.1.Acommercialleakagetester,suchastheSimpson229orRCAWT-540A.Followthemanufacturers’instructionstousetheseinstructions.2.Abattery-operatedACmilliampmeter.TheDataPrecision245digitalmultimeterissuitableforthisjob.3.MeasuringthevoltagedropacrossaresistorbymeansofaVOMorbattery-operatedACvoltmeter.The“limit”indicationis0.75V,soanalogmetersmusthaveanaccuratelowvoltagescale.TheSimpson’s250andSanwaSH-63TRDareexamplesofpassiveVOMsthataresuitable.Nearlyallbattery-operateddigitalmultimetersthathavea2VACrangearesuitable(seeFigureA).HowtoFindaGoodEarthGroundAcold-waterpipeisaguaranteedearthground;thecover-plateretainingscrewonmostACoutletboxesisalsoatearthground.Iftheretainingscrewistobeusedasyourearthground,verifythatitisatgroundbymeasuringtheresistancebetweenitandacold-waterpipewithanohmmeter.Thereadingshouldbezeroohms.Ifacold-waterpipeisnotaccessible,connecta60-to100-watttrouble-light(notaneonlamp)betweenthehotsideofthereceptacleandtheretainingscrew.Trybothslots,ifnecessary,tolocatethehotsideontheline;thelampshouldlightatnormalbrillianceifthescrewisatgroundpotential(seeFigureB).ToExposedMetalPartsonSet0.15µFEarthGroundACVoltmeteroo(0