JVC AV-20NMG3B, AV-20N3/D, AV-20NMG3/-A service manual VSM Preset Setting, VER. Scurve, Top, Sharp

AV-20N3

AV-20NMG3

AV-20NMG3B

Item	Measuring		Test point	Ad justment part			Description
	instrument
Ad justment	Signal			4. VER. L IN.		● When the	vertical linearity has	been	deteriorated
of VER. LIN.	generator			5. VER. SCURVE		remarkably, perform the following steps.
& VER.	Remote					15.Input a cross -hatch signal.
SCURVE	control unit
						16.Select 4. VER. LIN. with the MENU ▼/▲ key.
						17.Set the initial setting value of 4. VER LIN. with the MENU - / +
					TOP	key.		▼/▲ key.
						18.Select 5. VER. SCURVE with the MENU
						19.Set the initial setting value of 5. VER. SCURVE with the MENU
						- / + key.
					CEN TER	20.Adjust 4. VER. LIN. and 5. VER. SCURVE so that the spaces
						of each line	as shown in Fig.3 on	TOP,	CENTER and
					BOTTOM	BOTTOM become uniform.
						Make sure that the adjustment is properly done on the screen of
		Fig.3				60Hz mode.
						[NOTE]
						" Adjust to make both 50Hz & 60Hz are the same v. size and
						fine straight line.
						" When adjust again, adjust 50Hz mode first.
						" When adjust in 60Hz mode, only 60Hz mode is adjust.

VSM PRESET SETTING

Item

Measuring instrument

Test point

Ad justment part

Description

Setting of

VSM PRESET

Remote control unit

BRIGHT

TINT**

COLOUR **

BRIGHT **

CONT. **

SHARP **

/	:SELECT
- / + : OPERATE		DISP : EXIT

TINT	1.	Enter the SERVICE MENU.
COLOUR	2.	Select 4. VSM PRESET from the SERVICE MENU.
BRIGHT	3.	Select BRIGHT with the PICTURE MODE key.
CONT .	4.	Adjust the MENU ▼/▲ and MENU - / + key to bring the set
SHARP		values of TINT ～ SHARP to the values shown in the below
		table.

5.Respectively select the VSM PRESET mode for SOFT and STANDARD, and make similar adjustment as in 3 above.

•VSM PRESET

VSM	BRIGHT	STANDARD	SOFT
Setting Item
TINT	+15	←	←
COLOUR	+15	←	←
BRIGHT	+15	←	←
CONT	+30	+15	+11
SHARP	+15	←	+12

28 No. 52025