三星显示器_DP15H_17L维修手册(同750S)

COLORMONITORDP15HS/HTDP17LS/LTManualSERVICECOLORMONITORCONTENTSEXITEXITMENU1.Precautions2.ProductSpecifications3.Disassembly&Reassembly4.Alignment&Adjustments5.Troubleshooting6.ExplodedView&PartsList7.ElectricalPartsList8.BlockDiagram9.WiringDiagram10.SchematicDiagramsSamsungElectronicsCo.,Ltd.May1999PrintedinKoreaCodeNo.:BH68-00129ACopyright©1999bySamsungElectronicsCo.,Ltd.Allrightsreserved.Thismanualmaynot,inwholeorinpart,becopied,photocopied,reproduced,translated,orconvertedtoanyelectronicormachinereadableformwithoutpriorwrittenpermissionofSamsungElectronicsCo.,Ltd.DP15H*/DP17L*ServiceManualFirsteditionMay1999.PrintedinKorea.TrademarksSamsungisaregisteredtrademarkandDP15H*/DP17L*andMacMasterCableAdapteraretrademarksofSamsungElectronicsCo.,Ltd.Macintosh,Centris,Quadra,DuoDock,andPowerMacintosharetrademarksofAppleComputer,Inc.Allothertrademarksarethepropertyoftheirrespectiveowners.iiDP15H*/DP17L*WARNINGS1.Forcontinuedsafety,donotattempttomodifythecircuitboard.2.DisconnecttheACpowerbeforeservicing.3.Whenthechassisisoperating,semiconductorheatsinksarepotentialshockhazards.1-1-1ServicingtheHighVoltageVRandCRT:WARNING:AhighvoltageVRreplacedinthewrongdirectionmaycauseexcessiveX-rayemissions.Caution:WhenreplacingthehighvoltageadjustmentVR,itmustbefixedbyasolderingironafteritisproperlyset.1.Whenservicingthehighvoltagesystem,removethestaticchargebyconnectinga10kohmresistorinserieswithaninsulatedwire(suchasatestprobe)betweenthechassisandtheanodelead.2.IftheHVVRrequiresadjustment,(a)ReplacetheVRandadjustthehighvoltagetothespecification.(b)UseasolderingirontomelttheadjustmentcapontheHVVRtopreventanymovement.3.WhentroubleshootingamonitorwithexcessivelyHV,avoidbeingunnecessarilyclosetothemonitor.Donotoperatethemonitorforlongerthanisnecessarytolocatethecauseofexcessivevoltage.4.Highvoltageshouldalwaysbekeptattheratedvalue,nohigher.OnlywhenhighvoltageisexcessiveareX-rayscapableofpenetratingtheshelloftheCRT,includingtheleadinglassmaterial.OperationathighvoltagesmayalsocausefailureoftheCRTorhighvoltagecircuitry.5.WhentheHVregulatorisoperatingproperly,thereisnopossibilityofanX-rayproblem.MakesuretheHVdoesnotexceeditsspecifiedvalueandthatitisregulatingcorrectly.6.TheCRTisespeciallydesignedtoprohibitX-rayemissions.ToensurecontinuedX-rayprotection,replacetheCRTonlywithonethatisthesameorequivalenttypeastheoriginal.7.HandletheCRTonlywhenwearingshatterproofgogglesandaftercompletelydischargingthehighvoltageanode.8.DonotlifttheCRTbytheneck.1-1-2FireandShockHazard:Beforereturningthemonitortotheuser,performthefollowingsafetychecks:1.Inspecteachleaddresstomakecertainthattheleadsarenotpinchedorthathardwareisnotlodgedbetweenthechassisandothermetalpartsinthemonitor.2.Inspectallprotectivedevicessuchasnonmetalliccontrolknobs,insulatingmaterials,cabinetbacks,adjustmentandcompartmentcoversorshields,isolationresistor-capacitornetworks,mechanicalinsulators,etc.3.LeakageCurrentHotCheck(Figure1-1):WARNING:Donotuseanisolationtransformerduringthistest.UsealeakagecurrenttesterorameteringsystemthatcomplieswithAmericanNationalStandardsInstitute(ANSIC101.1,LeakageCurrentforAppliances),andUnderwritersLaboratories(ULPublicationUL1410,59.7).4.Withtheunitcompletelyreassembled,plugtheAClinecorddirectlyintoa120VACoutlet.WiththeunitÕsACswitchfirstintheONpositionandthenOFF,measurethecurrentbetweenaknownearthground(metalwaterpipe,conduit,etc.)andallexposedmetalparts,including:metalcabinets,screwheadsandcontrolshafts.Thecurrentmeasuredshouldnotexceed0.5milliamp.Reversethepower-plugprongsintheACoutletandrepeatthetest.Figure1-1.LeakageCurrentTestCircuit1-1-4ProductSafetyNoticesSomeelectricalandmechanicalpartshavespecialsafety-relatedcharacteristicswhichareoftennotevidentfromvisualinspection.Theprotectiontheygivemaynotbeobtainedbyreplacingthemwithcomponentsratedforhighervoltage,wattage,etc.Partsthathavespecialsafetycharacteristicsareidentifiedbyonschematicsandpartslists.Asubstitutereplacementthatdoesnothavethesamesafetycharacteristicsastherecommendedreplacementpartmightcreateshock,fireand/orotherhazards.Productsafetyisunderreviewcontinuouslyandnewinstructionsareissuedwheneverappropriate.Componentsidentifiedbyonschematicsandpartslistsmustbesealedbyasolderingironafterreplacementandadjustment.DP15H*/DP17L*1-11Precautions1-1SafetyPrecautions!DEVICEUNDERTESTTESTALLEXPOSEDMETALSURFACES(READINGSHOULDNOTBEABOVE0.5mA)LEAKAGECURRENTTESTER2-WIRECORDALSOTESTWITHPLUGREVERSED(USINGACADAPTERPLUGASREQUIRED)EARTHGROUND1.Servicingprecautionsareprintedonthecabinet,andshouldbefollowedclosely.2.AlwaysunplugtheunitÕsACpowercordfromtheACpowersourcebeforeattemptingto:(a)removeorreinstallanycomponentorassembly,(b)disconnectPCBplugsorconnectors,(c)connectalltestcomponentsinparallelwithanelectrolyticcapacitor.3.Somecomponentsareraisedabovetheprintedcircuitboardforsafety.Aninsulationtubeortapeissometimesused.Theinternalwiringissometimesclampedtopreventcontactwiththermallyhotcomponents.Reinstallallsuchelementstotheiroriginalposition.4.Afterservicing,alwayscheckthatthescrews,componentsandwirin