JVC AV-20NMG3/-A, AV-20N3/D, AV-20NMG3B service manual Basic Operation of Service Menu

Page 16

AV-20N3

AV-20NMG3

AV-20NMG3B

BASIC OPERATION OF SERVICE MENU

"The adjustment using SERVICE MENU

The following adjustment items use the SERVICE MENU in the series of the adjustment. The adjustments are made on the basis of the initial setting values. The adjustment values which adjust the screen to the optimum condition can be different from the initial setting values. With the SERVICE MENU, various settings can be made, and they are broadly classified in the following items of settings.

1.IF ・・・・・・・・・・・・・・・・・・・・・・・ Adjustment of the IF circuits.

2.V/C ・・・・・・・・・・・・・・・・・・・・・・ Adjustment of the VIDEO/CHROMA circuit. 3.DEF ・・・・・・・・・・・・・・・・・・・・・ Adjustment of the DEFLECTION circuit.

4.VSM PRESET ・・・・・・・・・・・・ Adjustment of the initial setting values of VSM condition as STANDARD, SOFT and BRIGHT. (VSM : Video Status Memory)

5.PRESET ・・・・・・・・・・・・・・・・・ Adjustment of the RF circuit [Do not adjust].

6.SETUP TOUR OFF ・・・・・・・ It should be able to select mode (LANGUAGE and AUTO CH PRESET).. [Shou ld be OFF].

"Key operation of the SERVICE MENU [Enter to SERVICE MENU]

Press the DISPLAY key and the PICTURE MODE key of the REMOTE CONTROL

UNIT simultaneously. Then enter the SERVICE MENU mode as shown in Fig.1.

[Exit from SERVICE MENU]

When complete the adjustment work, press the DISPLAY key to return to the

SERVICE MENU.

And then press the DISPLAY key again, return to the normal screen.

[Select from SERVICE MENU]

In SERVICE MENU, press the number (16) key of the remote control unit, to select

any of the adjustment items.

The colours which selected item characters are changed.

KEY ASSIGNMENT OF REMOTE CONTROL UNIT

 

SERVICE MENU

 

 

 

 

SERVICE MENU

 

 

1.IF

2.V/C

 

 

3.DEF

4.VSM PRESET

 

5.PRESET

 

 

 

6.SETUP TOUR OFF

 

 

1-6 SELECT

 

DISP : EXIT

 

 

 

.

 

***********

** ***

 

*** **

****

***

 

 

 

 

Fig.1

DISPLAY key

MENU

/key

PICTURE MODE key

NUMBERS

key

MENU /key

Except for difference in body colour, the Remote Control Unit RM-C364GY and RM-C364 have exactly the same Functions.

16

No. 52025

Image 16
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 Part Name Main Difference ListModel 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 Sound System Do Not Adjust Setting item PresetPAL Secam Procedures Replacement of IC301 if V/C DecoderLocations 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 CRT TintSocket BL Adjust Ad justment part Description RemoteSecam Control unit BL ACKDeflection Circuit Adjustment PositionVSM Preset Setting VER. ScurveScurve TOPPurity Adjustment Purity / Convergence Adjustment# P/C Magnets Static Convergence Adjustment Dynamic Convergence AdjustmentReplacement Steps Replacement of Chip ComponentSoldering Iron AV-20N3 AV-20NMG3 AV-20NMG3B