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1、COLORMONITORSyncMaster753DF(DF17K*)SyncMaster755DF(DF17J*)SERVICEManualCOLORMONITORCONTENTS1.Precautions2.ProductSpecifications3.Disassembly&Reassembly4.Alignment&Adjustments5.Troubleshooting6.ExplodedView&PartsList7.ElectricalPartsList8.BlockDiagram
2、9.WiringDiagram10.SchematicDiagramsSamsungElectronicsCo.,Ltd.May2000PrintedinKoreaP/N:BH68-00129G-011Precautions1-1SafetyPrecautionsWARNINGS2.Inspectallprotectivedevicessuchasnonmetallic1.Forcontinuedsafety,donotattempttomodifythecontrolknobs,insulat
3、ingmaterials,cabinetbacks,circuitboard.adjustmentandcompartmentcoversorshields,2.DisconnecttheACpowerbeforeservicing.isolationresistor-capacitornetworks,mechanicalinsulators,etc.3.Whenthechassisisoperating,semiconductorheatsinksarepotentialshockhazar
4、ds.3.LeakageCurrentHotCheck(Figure1-1):WARNING:Donotuseanisolationtransformerduring1-1-1ServicingtheHighVoltageVRthistest.andCRT:UsealeakagecurrenttesterorameteringsystemthatcomplieswithAmericanNationalStandardsWARNING:AhighvoltageVRreplacedinthewron
5、gInstitute(ANSIC101.1,LeakageCurrentfordirectionmaycauseexcessiveX-rayAppliances),andUnderwritersLaboratories(ULemissions.PublicationUL1410,59.7).Caution:Whenreplacingthehighvoltage4.Withtheunitcompletelyreassembled,plugtheACadjustmentVR,itmustbefixe
6、dbyalinecorddirectlyintoa120VACoutlet.Withthesolderingironafteritisproperlyset.unit’sACswitchfirstintheONpositionandthen1.Whenservicingthehighvoltagesystem,removeOFF,measurethecurrentbetweenaknownearththestaticchargebyconnectinga10kohmresistorground(
7、metalwaterpipe,conduit,etc.)andallinserieswithaninsulatedwire(suchasatestexposedmetalparts,including:metalcabinets,probe)betweenthechassisandtheanodelead.screwheadsandcontrolshafts.Thecurrent2.IftheHVVRrequiresadjustment,(a)Replacethemeasuredshouldno
8、texceed0.5milliamp.ReverseVRandadjustthehighvoltagetothespecification.thepower-plugprongsintheACoutletandrepeat(b)Useasolderingirontomelttheadjustmentcapthetest.ontheHVVRtopreventanymovement.(READINGSHOULD3.WhentroubleshootingamonitorwithexcessivelyN
