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

Page 9

SPEAKER

AV-20N3

AV-20NMG3

AV-20NMG3B

FRONT CABI.

SPEAKER

CRT SOCKET	C
PWB	C	(×2)
PWB

MAIN PWB

C

(×2)

POWER

CORD

REAR

COVER

B (×1)

A (×6)

No. 52025

9

Image 9

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 Main Difference List Part NameModel 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 Preset Sound System Do Not Adjust Setting itemPAL Secam Replacement of IC301 if V/C Decoder ProceduresLocations of Front Panel Buttons and LAM PS 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 Tint CRTSocket Ad justment part Description Remote BL AdjustSecam Control unit BL ACKPosition Deflection Circuit AdjustmentVER. Scurve VSM Preset SettingScurve TOPPurity / Convergence Adjustment Purity Adjustment# P/C Magnets Dynamic Convergence Adjustment Static Convergence AdjustmentReplacement of Chip Component Replacement StepsSoldering Iron AV-20N3 AV-20NMG3 AV-20NMG3B