JVC AV-20N3/D, AV-20NMG3/-A, AV-20NMG3B service manual Functions, Front Panel Rear Terminal

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FUNCTIONS

■FRONT PANEL

■REAR TERMINAL

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1	3
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AV-20N3

AV-20NMG3

AV-20NMG3B

1MENU buttons

2CHANNEL －/＋ buttons

3VOLUME －/＋ buttons

4AI ECO sensor

5REMOTE CONTROL sensor

6ON TIMER lamp

7POWER lamp

8MAIN POWER button

9A/V INPUT terminal

10HEADPHONE jack

1ANT Terminal

2VIDEO INPUT Terminal

3VIDEO OUTPUT Terminal

4AUDIO INPUT T erminal

5AUDIO OUT PUT Terminal

No. 52025

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Contents Contents Ents SpecificationsAV-20N3 AV-20NMG3Safety Precautions Memory SCL 2/SDA2 FeaturesMicro Computer VIDEO/CHROMA Decorder SCL 1/SDA1Front Panel Rear Terminal FunctionsRemote Control Unit Model Name Main Difference ListPart Name Disassembly Procedure Specific Service InstructionsSpeaker Service Menu KEY Assignment of Remote Control UnitSystem CONSTANT-Ⅰ System CONSTANT-ⅡSetting item Setting contents Setting of System Constant SETUser 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 Before Starting Service Adjustment Service AdjustmentsAdjustment Items Measuring Instrument and FixturesKEY Assignment of Remote Control Unit Service Menu Basic Operation of Service MenuC, 3.DEF and 4.VSM Preset Method of settingSetup Tour Should be OFFService Menu Flow Chart Solder Side Adjustment LocationsTOP UpperfocusB1 Power Supply AdjustmentsFocus Adjustment If Circuit AdjustmentPoint Delay PointAGC AGC Take Over OtherVideo / Chroma Circuit Adjustment SUB Bright Method of adjustment without measuring instrumentAd justment Remote SUBColour Ⅱ Socket TintCRT Ad justment part Description Remote BL AdjustSecam Control unit BL ACKPosition Deflection Circuit AdjustmentVER. Scurve VSM Preset SettingScurve TOP# P/C Magnets Purity / Convergence AdjustmentPurity Adjustment Dynamic Convergence Adjustment Static Convergence AdjustmentSoldering Iron Replacement of Chip ComponentReplacement Steps AV-20N3 AV-20NMG3 AV-20NMG3B