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EN7220ServiceTHESEEN7220ServiceTHESEDOCUMENTSAREFORREPAIRSERVICEINFORMATIONONLY.EVERYREASONABLEEFFORTHASBEENMADETOENSURETHEACCURACYOFTHISMANUAL;WECANNOTGUARANTEETHEACCURACYOFTHISINFORMATIONAFTERTHEDATEOFPUBLICATIONANDDISCLAIMSRELIABILITYFORCHANGES,ERRORSORManufactureDate:Apr-09-1SERVICEMANUALEN7220Service2TableofTableof Revision 1.Monitor 2.LCDMonitor 3.OperationEN7220Service2TableofTableof Revision 1.Monitor 2.LCDMonitor 3.Operation 3.1General 3.2AdjustingThe 4.1InputSignal 4.2FactoryPresetDisplay 4.3PowerSupply 4.3.1Input/Output 4.3.2InverterMax 4.3.3InverterMin 4.4PanelSpecification(CPT 4.4.1Display 4.4.2Optical 4.4.3ParameterguidelineforCCFL 5.Block 5.1MonitorExploded 5.2SoftwareFlow EN7220Service35.3ElectricalBlock 5.3.1Scalar 5.3.2Inverter/Power 6. 6.1Scalar 6.2EN7220Service35.3ElectricalBlock 5.3.1Scalar 5.3.2Inverter/Power 6. 6.1Scalar 6.2Inverter/Power 6.3KeyPad 7.PCB 7.1Main 7.2Inverter/Power 7.3Keypad 8. 8.1EquipmentsandTools 8.2Trouble 8.2.1Main 8.2.2Power/Inverter 8.2.3KeyPad 9.White-Balance,Luminance 10.EDID 11.BOM EN7220Service4LCDDrivingTFTColorPixel0.264mm(H)x140˚(H)130˚ResponsetimeEN7220Service4LCDDrivingTFTColorPixel0.264mm(H)x140˚(H)130˚Responsetime25Sync.H/V30kHz–DisplayOver16millionDotMax.1280xPlug&VESAPowerONOFFMaximumScreenVertical:10.6”(270.336mm)PowerOperatingTemp:0°Cto40°CStorageTemp.-20°Cto60°COperatingHumidity:15%to90%Weight(N.W.) 6.6KgsEN7220ServiceTheEN7220ServiceTheLCDMONITORwillcontainamainboard,aninverter/powerboard,keypadboardandinternaladapterwhichhousetheflatpanelcontrollogic,brightnesscontrollogicandDDC.TheInverterboardwilldrivethebacklightofpanelandtheDC-DCAC-Videosignal,5HOSTForwhitebalanceadjustmentinfactorymodeCCFTMainPowerboardFlatPanelMonitorBlockEN7220ServiceOPERATINGGENERALPressthepowerbuttontoturnthemonitoronoroff.Theothercontrolbuttonsarelocatedatfrontpanelofthemonitor.Bychangingthesesettings,thepicturecanbeadjustedtoyourpersonalThepowercordshouldbeConnecttheEN7220ServiceOPERATINGGENERALPressthepowerbuttontoturnthemonitoronoroff.Theothercontrolbuttonsarelocatedatfrontpanelofthemonitor.Bychangingthesesettings,thepicturecanbeadjustedtoyourpersonalThepowercordshouldbeConnectthevideocablefromthemonitortothevideoPressthepowerbuttontoturnonthemonitor,thepowerindicatorwilllight---Thedescriptionsforfunctioncontrol6ResetContrastfromDigital-0-RecallContrastBacklight0-RecallBrightnessImageAdjustPicturePhasetoHorizontal-Line0-DoAutoAdjustpictureClockto0-DoAutoH.the0-DoAutoV.Adjusttheverticalpositionof0-DoAutoColorfromTheColorbesettoCool.fromEN7220Service7User/0-TheUserR/G/Bvalue(defaultis100)willnotbeUserGreenGainDigital-0-User/0-AutoConfigyModel)AutoAdjusttheH/VFocusandClockofDonotexecuteAutoreturntomainOSDH.EN7220Service7User/0-TheUserR/G/Bvalue(defaultis100)willnotbeUserGreenGainDigital-0-User/0-AutoConfigyModel)AutoAdjusttheH/VFocusandClockofDonotexecuteAutoreturntomainOSDH.the0-V.Adjusttheverticalpositionof0-AdjusttheOSD10-SetOSDdisplaylanguagewillbesettoSetOSDdisplaylanguageSetOSDdisplaylanguageSetOSDdisplaylanguageSetOSDdisplaylanguage简体中SetOSDdisplaylanguageSimplifiedShowtheresolution,H/VfrequencyandinputportofcurrentinputCleareacholdstatusofAuto-configurationandsettheDonotexecutereset,returnmainExitEN7220ServiceInput/OutputInputSignal8PINPINDetectDDC-SerialEN7220ServiceInput/OutputInputSignal8PINPINDetectDDC-SerialH-R-V-G-DDC-SerialB-VGAconnector EN7220Service4.2FactoryPresetDisplay9VESA+/-1800xNN832xNN840xNN1024x1056xPP1040xPPPPNNNNNNPPNNPPPPPPPPIBMEN7220Service4.2FactoryPresetDisplay9VESA+/-1800xNN832xNN840xNN1024x1056xPP1040xPPPPNNNNNNPPNNPPPPPPPPIBM+/-1900xNP800xNPMACNNNNEN7220ServicePowerSupplyInput4.3.2OutputInputVInputFOR4OutputFOR1FFOR1H.VNOH.VEN7220ServicePowerSupplyInput4.3.2OutputInputVInputFOR4OutputFOR1FFOR1H.VNOH.VInputVInputFOR4OutputFOR1FFOR1H.VNOH.VProtectdelay14EN7220ServicePanelSpecification4.4.2OpticalTheopticalcharacteristicsaremeasuredunderstableconditionsat25℃(RoomContrast--L--9---Image2--2φ-θ-φEN7220ServicePanelSpecification4.4.2OpticalTheopticalcharacteristicsaremeasuredunderstableconditionsat25℃(RoomContrast--L--9---Image2--2φ-θ-φ-θ--DisplayArea337.920(H)X270.336(V)(17.0-inchNumberof1280(H)X1024PixelPitch0.264(H)X0.264ColorpixelRGBverticalDisplayNormallywhite,Numberof16.2M(6Bit300cd/㎡(Typ.)(CenterpointLampcurrent=7.0SurfaceElectricalTotalModulePower6ModuleSize358.5(W)X296.5(H)X17.0ModuleWeightBacklightCCFL,4tables,edge-lightEN7220Service4.4.3ParameterGuideforCFLLamp--VLamp-EN7220Service4.4.3ParameterGuideforCFLLamp--VLamp--V--VLamplife--Continuous--ContinuousEN7220ServiceEN7220ServiceBlockMonitorExplodedEN7220Service5.2SoftwareFlow12Y3N45 Y67N8Y9NYNNYYNEN7220Service5.2SoftwareFlow12Y3N45 Y67N8Y9NYNNYYNYNYEN7220ServiceEN7220ServiceMCUIstheeepromProgramtheeeprombydefaultGetthePWMvalueofbrightnessfromIsthepowerkeyClearallglobalAretheAUTOandSELECTkeysEnterfactorySavethepowerkeystatusintoeeprom.TurnontheLEDandsetittogreencolor.Scalerinitialize.InstandbyUpdatethelifetimeofbackChecktheanalogport,arethereanysignalsDoesthescalarsendoutaninterruptWakeuptheArethereanysignalscomingfromanalogDisplay"NoconnectionCheckSignalCable"message.Andgointostandbymodeafterthemessagedisappears.ProgramthescalartobeabletoshowthecomingProcesstheOSDReadthekeyboard.IsthepowerkeyEN7220ServiceEN7220ServiceElectricalBlockMainEN7220ServiceEN7220ServiceInverterBlockEN7220ServiceEN7220ServicePowerBlockEN7220ServiceMainSOT-TO-EN7220ServiceMainSOT-TO-EN7220Service4132468 579402+EN7220Service4132468 579402+EN7220ServiceEN7220ServiceEN7220Service6.2Inverter/PowertAOC(TopVictory)ElectronicsCo.,ispowerissignalEN7220Service6.2Inverter/PowertAOC(TopVictory)ElectronicsCo.,ispowerissignalEN7220Service6.3KeyPadSOT-EN7220Service6.3KeyPadSOT-EN7220ServiceEN7220ServicePCBMainEN7220Service7.2Inverter/PowerEN7220Service7.2Inverter/Power7.3KeypadEN7220ServiceEN7220ServiceEquirementsandTools1.)2.)3).Pattern4)DDCToolwithanIBMCompatibleAlignmentTool.ServiceManual.UserEN7220ServiceTroubleMain1.NOSCREENAChangePowerboardandCheckChangeChangeCheckNoDotEN7220ServiceTroubleMain1.NOSCREENAChangePowerboardandCheckChangeChangeCheckNoDotDotImageLightDarkBrightMissingDefectFailureEN7220ServiceAAChangeChangeChangeCheckNoChangeCheckChangeChangeEN7220ServiceAAChangeChangeChangeCheckNoChangeCheckChangeChangeChangeChangeCheckChangeCheckChangeChangeChecklGrayChangeChangeChangeCheckDefectFailureEN7220ServiceAChangeLVDSCheckLVDSChangeCheckChangeCheckEN7220ServiceAChangeLVDSCheckLVDSChangeCheckChangeCheckChangeCheckChangeCheckMainboardorwireLEDMainboardorwireLEDMainboardorwireDefectFailureEN7220Service1.)NoEN7220Service1.)NoCheckIC902,CheckQ901,Q902…OVPChecktheauxiliaryvoltageissmallerthanChangeCheckstartvoltageforthepin3ofCheckbridgerectifiedCheckthevoltageofChangeF901;checkBD901,Q903,andCheckAClinevolt120VorCheckInterfaceChecktoCN102Pin1andpin2=EN7220Service2.)W/LED,NoCheckconnecter&EN7220Service2.)W/LED,NoCheckconnecter&ChangePT201orChecktheoutputofChecktheresonantwaveofpin2&pin5forCheckD201(-),D202(-)hastheoutputofsquarewaveatChangeCheckthepin1ofU201havesawChangeQ201orCheckU201CheckInterfaceCheckON/OFFChangeCheckC201(+)EN7220Service8.2.3KeyPadOSDisunstableEN7220Service8.2.3KeyPadOSDisunstableornotNIsKeyPadBoardconnectingYNIsButtonSwitchYNIsKeyPadBoardYCheckMainConnectEN7220ServiceApproximately30minutesshouldbeallowedforwarmupEN7220ServiceApproximately30minutesshouldbeallowedforwarmupbeforeproceedingwhitebalanceadjustment.Beforestartedadjustwhitebalance,pleasesettingtheChroma-7120MEM.channel1to6500color,MEM.channel2to7800color(our6500parameterisx=313±10,y=329±10,Y=200±10cd/m2,7200parameterisx=296±10,y=311±10,Y=200±10HowtosettingMEM.channelyoucanreferencetochroma7120userguideorsimpleuse“SC”keyand“NEXT”keytomodifyxyYvalueanduse“ID”keytomodifytheTEXTFollowingistheproceduretodowhite-balancePressMENUbuttonduring2secondsalongwithpressPowerbuttonwillactivatethefactorymode,thenMCUwilldoAUTOLEVELautomatically.MeanwhilepressMENUtheOSDscreenwilllocateatlefttopofBiasSetthetoSdjustthetoII.GainMovecursorto“-Factory-”andpressMENUa.Adjust6500color-12Switchthechroma-7120toRGB-mode(withpress“MODE”SwitchtheMEM.ChanneltoChannel01(withupordownarrowonchromaTheLCD-indicatoronchroma7120willshowx=313±10,y=329±10,Y=200±5cd/m2AdjusttheREDonOSDwindowuntilchroma7120indicatorreachedthevalueAdjusttheGREENonOSD,untilchroma7120indicatorreachedG=100AdjusttheBLUEonOSD,untilchroma7120indicatorreachedB=100Repeataboveprocedure(item5,6,7)untilchroma7120RGBvaluemeetthetolerance=100±2PressExitonOSDwindowtosavetheadjustment345678EN7220Serviceb.Adjust7800color-9Switchthechroma-7120toRGB-mode(withpress“MODE”EN7220Serviceb.Adjust7800color-9Switchthechroma-7120toRGB-mode(withpress“MODE”SwitchtheMEM.channeltoChannel02(withupordownarrowonchromaTheLCD-indicatoronchroma7120willshowx=296±10,y=311Y=200±5AdjusttheREDonOSDwindowuntilchroma7120indicatorreachedthevalueAdjusttheGREENonOSD,untilchroma7120indicatorreachedG=100AdjusttheBLUEonOSD,untilchroma7120indicatorreachedB=100Repeataboveprocedure(item5,6,7)untilchroma7120RGBvaluemeetthetolerance=100±2PressExitonOSDwindowtosavetheadjustmentTurnthePOWER-buttonofftoontoquitfromfactory10.EDITD-SUBConnectorNote:Byte0C,0D,0E,0FmeansSerialNo.Byte10,11meanManufactureTime.Byte7FEN7220Service11.BOMLISTCONVERSION1KEY1POWER1 1WOODEN 1WOODEN11L6038CABLE1MAIN115L5908119L6006STAND126L800673ENVISIONBARCODE133L4651GMBUTTON133L4652LENS133L4654GM133L4678GNUTILITYCUP233L4679GM21REAR140L154501HI-POTGNDLABELFOR140L190673ID140L459673BARBETTE140L459673FRONTLABELEN7220Service11.BOMLISTCONVERSION1KEY1POWER1 1WOODEN 1WOODEN11L6038CABLE1MAIN115L5908119L6006STAND126L800673ENVISIONBARCODE133L4651GMBUTTON133L4652LENS133L4654GM133L4678GNUTILITYCUP233L4679GM21REAR140L154501HI-POTGNDLABELFOR140L190673ID140L459673BARBETTE140L459673FRONTLABELFOR140L459673CONNERLABELFOR140L459673BASELABELFOR140L459786CANTIONLABELFOR140L581唛头纸FOR41L68508INPUTNOTSUPPORT11Envision1WARRANTY1Envision-Kensington1WARRANTY144L3231EVA2144L3725EPS144L3725144L9003CORNEREN7220Service45L7628PEBagFor145L7631PEBAGFOR145L7745LBARCODE45LBARCODE45LPEBAGFOR145L88609EPE145L88621PEBAYFOR150L600150L6001 1150白胶带/WHITE MIDDLETAPEFOR SMALL8 1208ALUMINIUM2 1211ALUMINIUM152L6020PROTECT052L6025MYLAR152L6025MYLAR1CD185LMAIN1SIGNAL1POWEREN7220Service45L7628PEBagFor145L7631PEBAGFOR145L7745LBARCODE45LBARCODE45LPEBAGFOR145L88609EPE145L88621PEBAYFOR150L600150L6001 1150白胶带/WHITE MIDDLETAPEFOR SMALL8 1208ALUMINIUM2 1211ALUMINIUM152L6020PROTECT052L6025MYLAR152L6025MYLAR1CD185LMAIN1SIGNAL1POWER195L801412HARNESS12P-12P195L801830HARNESS24P-30P1M1L140SCREW4M1L330SCREW1M1L11304M1L11303M1L1140SCREW1M1L1730SCREW4Q1L1030SCREW3X83Q1L1030SCREW3X86BACKCOVER1CPT17"LCDPanel1W33L4653GM1NO:CONVERSIONMAIN1PINHEADER24P1EN7220Service33L8027WAFER2*6P2.0MM133L8027WAFER16PIN2.0mm140L457624CPU140LCBPC11W78E65P-40BY167L30910010UF+-20%167L30910010UF+-20%167L30910010UF+-20%167L30910010UF+-20%167L30910010UF+-20%167L30910010UF+-20%167L30910010UF+-20%167L30910010UF+-20%167L30922022UF+-20%167L30947047UF16V167L30947047UF16V1LOWESREN7220Service33L8027WAFER2*6P2.0MM133L8027WAFER16PIN2.0mm140L457624CPU140LCBPC11W78E65P-40BY167L30910010UF+-20%167L30910010UF+-20%167L30910010UF+-20%167L30910010UF+-20%167L30910010UF+-20%167L30910010UF+-20%167L30910010UF+-20%167L30910010UF+-20%167L30922022UF+-20%167L30947047UF16V167L30947047UF16V1LOWESR220UF25V1LOWESR220UF25V188L35315FD-SUB15PIN193L22193L22551NO:MAIN56L562156L563156L585056L585156L1133156L1133157L417157L417157L417157L417157L417157L417157L763A03401SOT23BYAOS161L125103CHIPAR8P4R10KOHM+-161L125103CHIPAR8P4R10KOHM+-1EN7220ServiceCHIPR0OHM+-5%1CHIPR0OHM+-5%1CHIPR0OHM+-5%1CHIPR0OHM+-5%1CHIPR0OHM+-5%1CHIPR0OHM+-5%1CHIPR0OHM+-5%1CHIPR0OHM+-5%1CHIPR0OHM+-5%1CHIPR0OHM+-5%1CHIPR100OHM+-5%1CHIPR100OHM+-5%1CHIPR100OHM+-5%1CHIPR100OHM+-5%1CHIPR100OHM+-5%1CHIPR100OHM+-5%1CHIPR100OHM+-5%EN7220ServiceCHIPR0OHM+-5%1CHIPR0OHM+-5%1CHIPR0OHM+-5%1CHIPR0OHM+-5%1CHIPR0OHM+-5%1CHIPR0OHM+-5%1CHIPR0OHM+-5%1CHIPR0OHM+-5%1CHIPR0OHM+-5%1CHIPR0OHM+-5%1CHIPR100OHM+-5%1CHIPR100OHM+-5%1CHIPR100OHM+-5%1CHIPR100OHM+-5%1CHIPR100OHM+-5%1CHIPR100OHM+-5%1CHIPR100OHM+-5%1CHIPR100OHM+-5%1CHIPR100OHM+-5%1CHIPR100OHM+-5%1CHIPR100OHM+-5%1CHIPR100OHM+-5%1CHIPR100OHM+-5%1CHIPR100OHM+-5%1CHIPR1KOHM+-5%1CHIPR1KOHM+-5%1CHIPR10KOHM+-5%1CHIPR10KOHM+-5%1CHIPR10KOHM+-5%1CHIPR10KOHM+-5%1CHIPR10KOHM+-5%1CHIPR10KOHM+-5%1CHIPR10KOHM+-5%1CHIPR10KOHM+-5%1CHIPR10KOHM+-5%1CHIPR10KOHM+-5%1CHIPR10KOHM+-5%1CHIPR10KOHM+-5%1CHIPR10KOHM+-5%1CHIPR10KOHM+-5%1EN7220ServiceCHIPR10KOHM+-5%1CHIPR10KOHM+-5%1CHIPR10KOHM+-5%1CHIPR10KOHM+-5%1CHIPR150OHM+-5%1CHIPR2.2KOHM+-5%1CHIP390OHM1/10W1CHIPR470OHM+-5%1CHIPR470OHM+-5%1CHIPR470OHM+-5%1CHIPR470OHM+-5%1CHIPR4.7KOHM+-5%1CHIPR4.7KOHM+-5%1CHIPR4.7KOHM+-5%1CHIPR4.7KOHM+-5%1CHIPR4.7KOHM+-5%EN7220ServiceCHIPR10KOHM+-5%1CHIPR10KOHM+-5%1CHIPR10KOHM+-5%1CHIPR10KOHM+-5%1CHIPR150OHM+-5%1CHIPR2.2KOHM+-5%1CHIP390OHM1/10W1CHIPR470OHM+-5%1CHIPR470OHM+-5%1CHIPR470OHM+-5%1CHIPR470OHM+-5%1CHIPR4.7KOHM+-5%1CHIPR4.7KOHM+-5%1CHIPR4.7KOHM+-5%1CHIPR4.7KOHM+-5%1CHIPR4.7KOHM+-5%1CHIPR4.7KOHM+-5%1CHIPR4.7KOHM+-5%1CHIPR4.7KOHM+-5%1CHIPR620OHM+-5%1CHIPR75OHM+-5%1CHIPR75OHM+-5%1CHIPR75OHM+-5%11000PF+-10%50V11000PF+-10%50V11000PF+-10%50V11000PF+-10%50V11000PF+-10%50V11000PF+-10%50V1CHIP0.1UF50V1CHIP0.1UF50V1CHIP0.1UF50V1CHIP0.1UF50V1CHIP0.1UF50V1CHIP0.1UF50V1CHIP0.1UF50V1CHIP0.1UF50V1CHIP0.1UF50V1CHIP0.1UF50V1CHIP0.1UF50V1EN7220ServiceCHIP0.1UF50V1CHIP0.1UF50V1CHIP0.1UF50V1CHIP0.1UF50V1CHIP0.1UF50V1CHIP0.1UF50V1CHIP0.1UF50V1CHIP0.1UF50V1CHIP0.1UF50V1CHIP0.1UF50V1CHIP0.1UF50V1CHIP0.1UF50V1CHIP0.1UF50V1CHIP0.1UF50V1CHIP0.1UF50V1EN7220ServiceCHIP0.1UF50V1CHIP0.1UF50V1CHIP0.1UF50V1CHIP0.1UF50V1CHIP0.1UF50V1CHIP0.1UF50V1CHIP0.1UF50V1CHIP0.1UF50V1CHIP0.1UF50V1CHIP0.1UF50V1CHIP0.1UF50V1CHIP0.1UF50V1CHIP0.1UF50V1CHIP0.1UF50V1CHIP0.1UF50V1CHIP0.1UF50V1CHIP0.1UF50V1CHIP0.1UF50V1CHIP0.1UF50V1CHIP0.1UF50V1CHIP0.1UF50V1CHIP0.1UF50V1CHIP22PF50V1CHIP22PF50V1CHIP22PF50V1CHIP22PF50V1CAP:CER220PF5%50V133PF+-5%50V1CHIP0.047UF50V1CHIP0.047UF50V1CHIP0.047UF50V1CHIP0.047UF50V1CHIP0.047UF50V1CHIP0.047UF50V1CHIP1UF25VX7R171L56G151171LCHIPBEAD600OHM171LCHIPBEAD600OHM171LCHIPBEAD600OHM171LCHIPBEAD600OHM1EN7220Service71LCHIPBEAD600OHM171LCHIPBEAD600OHM171LCHIPBEAD600OHM187L202PLCCSMTCONNPD41C-193L193L193L193L193L193LBAT54C193L193L193L193L193L1004193L102011715L1203MAIN1NO:KEY77L600KEY177L600KEY177L600KEY177L600KEY177L600KEY1EN7220Service71LCHIPBEAD600OHM171LCHIPBEAD600OHM171LCHIPBEAD600OHM187L202PLCCSMTCONNPD41C-193L193L193L193L193L193LBAT54C193L193L193L193L193L1004193L102011715L1203MAIN1NO:KEY77L600KEY177L600KEY177L600KEY177L600KEY177L600KEY181L121195L801416HARNESS9P-16P1715L97711NO:POWERPOWER1POWER1HEADER133L80204DCONN.4PDIPBY033L80204DCONN.4PDIPBY033L80204DCONN.4PDIPBY133L80204DCONN.4PDIPBY140LCBPC44L35210EN7220Service0 6RTV2G 6RTV0G 6RTV0G56L139PC123FY2BY056L139156L139PC123056L379SG6841DBY157L7612SC5706DIP157L7612SC5706DIP157L7612SC5706DIP157L7612SC5706DIP161L0.39OHM5%161L580808OHM1100KOHM5%163L1074740.47UF+-10%063L1074740.47UF+-10%163L0.47UF+-10%0EN7220Service0 6RTV2G 6RTV0G 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