JVC AV-20N3/D, AV-20NMG3/-A service manual AV-20N3 AV-20NMG3 AV-20NMG3B

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AV-20N3 AV-20NMG3 AV-20NMG3B

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No.52025

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Contents Contents Specifications EntsAV-20N3 AV-20NMG3Safety Precautions Features Memory SCL 2/SDA2Micro Computer VIDEO/CHROMA Decorder SCL 1/SDA1Functions Front Panel Rear TerminalRemote Control Unit Model Name Main Difference ListPart Name Specific Service Instructions Disassembly ProcedureSpeaker KEY Assignment of Remote Control Unit Service MenuSystem CONSTANT-Ⅰ System CONSTANT-ⅡSetting of System Constant SET Setting item Setting contentsUser Setting Values Setting item Setting valueInitial Setting Value of Service Menu PAL Secam PresetSound System Do Not Adjust Setting item Locations of Front Panel Buttons and LAM PS Replacement of IC301 if V/C DecoderProcedures Service Adjustments Before Starting Service AdjustmentAdjustment Items Measuring Instrument and FixturesBasic Operation of Service Menu KEY Assignment of Remote Control Unit Service MenuMethod of setting C, 3.DEF and 4.VSM PresetSetup Tour Should be OFFService Menu Flow Chart Adjustment Locations Solder SideTOP UpperfocusAdjustments B1 Power SupplyFocus Adjustment If Circuit AdjustmentDelay Point PointAGC AGC Take Over OtherVideo / Chroma Circuit Adjustment Method of adjustment without measuring instrument SUB BrightAd justment Remote SUBColour Ⅱ Socket TintCRT BL Adjust Ad justment part Description RemoteSecam Control unit BL ACKDeflection Circuit Adjustment PositionVSM Preset Setting VER. ScurveScurve TOP# P/C Magnets Purity / Convergence AdjustmentPurity Adjustment Static Convergence Adjustment Dynamic Convergence AdjustmentSoldering Iron Replacement of Chip ComponentReplacement Steps AV-20N3 AV-20NMG3 AV-20NMG3B