Rolsen_lcd_tv_RL-17S10 液晶电视维修

RL-17S10SERVICEMANUALPAGE:1COLORTFT-LCDTVSERVICEMANUALMODEL:RL-17S10CAUTION!!BEFORESERVICINGTHETFT-LCDTV,READTHESAFETYPRECAUTIONSINTHISMANUAL.RL-17S10SERVICEMANUALPAGE:2CONTENTSContents------------------------------------------------------------------------2SafetyPrecautions----------------------------------------------------------3ServicingPrecautions------------------------------------------------------4Specifications-----------------------------------------------------------------5ControlDescriptions--------------------------------------------------------10ExternalIn/OutPorts--------------------------------------------------------13Adjustment---------------------------------------------------------------------14BlockDiagram-----------------------------------------------------------------18SchematicDiagram----------------------------------------------------------19WaveForm----------------------------------------------------------------------20Troubleshooting---------------------------------------------------------------25ReplacementPartsList-----------------------------------------------------27PCBLayout---------------------------------------------------------------------34ExplodedView-----------------------------------------------------------------39RL-17S10SERVICEMANUALPAGE:3SAFETYPRECAUTIONSLeakageCurrentHotCheck(SeebelowFigure)PlugtheACcorddirectlyintotheACoutlet.DonotusealineIsolationTransformerduringthischeck.Connect1.5K/10wattresistorinparallelwitha0.15uFcapacitorbetweenaknowngoodearthground(WaterPipe,Conduit,etc.)andtheexposedmetallicparts.MeasuretheACvoltageacrosstheresistorusingACvoltmeterwith1000ohms/voltormoresensitivity.ReverseplugoftheACcordintotheACoutletandrepeatACvoltagemeasurementsforeachexposedmetallicpart.Anyvoltagemeasuredmustnotexceed0.75voltRMS,whichis,correspondsto0.5mA.Incaseanymeasurementisoutofthelimitsspecified,thereispossibilityofshockhazardandthesetmustbecheckedandrepairedbeforeitisreturnedtothecustomer.LeakageCurrentHotCheckcircuit!!ImportantSafetyNotice!!Manyelectricalandmechanicalpartsinthischassishavespecialsafety-relatedcharacteristics.ThesepartsareidentifiedbyintheSchematicDiagramandReplacementPartsList.ItisessentialthatthesespecialsafetypartsshouldbereplacedwiththesamecomponentsasrecommendedinthismanualtopreventShock,Fire,orotherHazards.Donotmodifytheoriginaldesignwithoutpermissionofmanufacturer.RL-17S10SERVICEMANUALPAGE:4SERVICINGPRECAUTIONSCAUTION!!Beforeservicingreceiverscoveredbythisservicemanual,readandfollowtheSAFETYPRECAUTIONSonpage3ofthispublication.GeneralServicingPrecautions1.AlwaysunplugthereceiverACpowercordfromACpowersourcebefore;Removingorreinstallinganycomponent,circuitboardmoduleoranyotherreceiverassembly.Disconnectingorreconnectinganyreceiverelectricalplugorotherelectricalconnection.Connectingatestsubstituteinparallelwithanelectrolyticcapacitorinthereceiver.CAUTION!!Awrongpartsubstitutionorincorrectpolarityinstallationofelectrolyticcapacitorsmayresultinanexplosionharzard.2.Donotspraychemicalsonornearthisreceiveroranyofitsassemblies.3.Donotdefectanyplug/socketvoltageinterlockswithwhichreceiverscoveredbythisservicemanualmightbeequipped.4.Alwaysconnectthetestreceivergroundleadtothereceiverchassisgroundbeforeconnectingthetestreceiverpositivelead.Alwaysremovethetestreceivergroundleadlast.5.DonotconnectthetestfixturegroundstraptopowersupplyheatsinkinthisreceiverElectrostaticallySensitive(ES)DevicesSomesemiconductor(solidstate)devicescanbedamagedeasilybystaticelectricity.SuchcomponentscommonlyarecalledElectrostaticallySensitive(ES)Device.ExamplesCircuitBoardFoilRepairExcessiveheatappliedtothecopperfoilofanyprintedcircuitboardwillweakentheadhesivethatbondsthefoiltothecircuitboardcausingthefoilthseparatefromor“lift-off”theboard.Thefollowingguidelinesandproceduresshouldbeflollowedwheneverthisconditionisencountered.AtICConnectionsTorepairadefectivecopperpatternatICconnectionsusethefollowingproceduretoinstallajumperwireonthecopperpatternsideofthecircuitboard.(UsethistechniqueonlyonICconnections.)1.Carefullyremovethedamagedcopperpatternwithasharpknife.(Removeonlyasmuchcopperasabsolutelynecessary.)2.Carefullyscratchawaythesolderresistandacryliccoating(ifused)fromtheendoftheremainingcoopperpattern.3.Bendasmall“U”inoneendofasmallguagejumperwireandcarefullycrimpitaroundtheICpin.4.Routethejumperwirealongthepathoftheout-awaycopperpatternandletitoverlapthepreviouslyscrapedendofthegoodcopperpattern.Soldertheoverlappedareaandclipoffanyexcessjumperwire.RL-17S10SERVICEMANUALPAGE:5SPECIFICATIONSNote:Specificationsandothersaresubjecttochangewithoutnoticeforimprovement.1.Scope.Thisdocumentisthespecificationof17.1”TFT-LCDColorTV.2.Power1)PowerrequirementDC12V/5.0A2)AC/DCAdapter.InputFrequency:50/603InputVoltage:AC110VAC240V(10%)OutputVoltage:DC12V3)PowercordUseULlistedandCSAcertifieddetachablepowercordtype:SVT,3-conductors,18AWGforAC120Varea.UseVDElisteddetachablepowercordtype:H05VV-F,3-conductors,18AWGforAC220~240Varea.3.TuningsystemFS,181Channel4.Soundoutput1.5W+1.5WrmsStereo(M