JVC AV-20N3/D, AV-20NMG3/-A, AV-20NMG3B service manual Initial Setting Value of Service Menu

Page 12

AV-20N3

AV-20NMG3

AV-20NMG3B

INITIAL SETTING VALUE OF SERVICE MENU

1.Ad justment of the SERVICE MENU is made on the basis of the initial setting values ; however, the new setting values which set the screen in its optimum condition may differ from the initial setting.

2.Do no t change the initial Setting Values of the Setting (Adjustment) items not listed In “ADJUSTMENT”.

2. V/C

 

 

 

 

 

 

 

 

 

 

 

Colour system

Variable

 

Initial setting value

 

 

 

 

 

 

 

 

Setting item

 

 

range

PAL

SECAM

NT SC 3.58

NT SC 4.4 3

 

 

 

RED

 

 

 

 

 

 

1.

CUT OFF

 

GREEN

-128

+127

-50

 

 

 

 

 

 

BL UE

 

 

 

 

 

 

2.

DRIVE

 

RED

-128

+127

+ 0

 

 

 

 

BL UE

 

 

 

 

 

 

 

 

 

 

 

 

3.

BRIGHT

 

 

-127+127

+ 0

 

 

 

4.

CONT .

 

 

-63

+63

+ 0

 

 

 

5.

COLOUR

 

 

-63

+63

+ 0

 

 

 

 

 

TV

 

 

 

 

 

+ 0

+ 0

 

 

 

AV-20N3

 

 

 

 

+0

- 2

 

 

 

AV-20N3/D

 

 

 

 

 

 

 

-63

+63

 

 

 

 

6.

TINT

VIDEO

 

 

 

 

 

 

 

AV-20NMG3

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

AV-20NMG3B

 

 

 

 

+8

- 2

 

 

 

AV-20NMG3/-A

 

 

 

 

 

 

7.

SECAM BL ADJ.

 

-31

+31

+ 0

 

 

 

8.

SHARP Do Not Adj.

TV

-32+31

- 8(Fixed)

 

 

 

VIDEO

+15(Fixed)

 

 

 

 

 

 

 

 

 

 

 

3. DEFLECTION

 

Setting item

Variable range

Initial setting value

 

 

 

 

fv : 50Hz MODE

fv : 60Hz MODE

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1.

VER. POSITION

-04 +03

- 2

- 3

 

 

 

 

 

 

 

2.

HOR. POSITION

-16 +15

+1

+ 4

 

 

 

 

 

 

 

 

3.

VER. HEIGHT

-64

+63

-40

+ 0

 

 

 

 

 

 

 

 

4.

VER. L INEARITY

-32

+31

+13

- 3

 

 

 

 

 

 

 

 

5.

VER. SWCURVE

-32

+31

-32

+ 0

 

 

 

 

 

 

 

 

6.

HOR. VCO ADJUST

 

 

-63

+62

+ 0

+ 0

Do Not Adj.

 

 

 

 

 

 

 

 

 

4.VSM PRESET

 

VSM preset

 

 

 

 

 

 

 

VSM

mode

BRIGHT

STANDARD

SOFT

Setting item

 

 

 

 

 

 

 

 

TINT SETTING VALUE

 

+15

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

COLOUR SETTING VALUE

 

+15

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

BRIGHT SETTING VALUE

 

+15

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CONT . SETTING VALUE

 

+30

+15

 

+11

 

 

 

 

 

 

 

 

 

 

SHARP SETTING VALUE

 

+15

 

 

 

+12

 

 

 

 

 

 

 

 

 

 

 

 

 

 

12

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