JVC AV-29V514/B Video Circuit Adjustments, Composite White Balance, Component White Balance

4.7.4 VIDEO CIRCUIT ADJUSTMENTS

•The setting (adjustment) using the remote control unit is made on the basis of the initial setting values.

•The setting values which adjust the screen to the optimum condition can be different from the initial setting values.

•Do not change the initial setting values of the setting (adjustment) items not listed in "ADJUSTMENT PROCEDURE".

• The initial setting values in parenthesis (								) are fixed offset values, needing no further adjustment.
	Adjustment item										Variable range						Initial setting value
													PAL			SECAM	NTSC3.58				NTSC4.43		COMPONENT (V-2)
																							525i		625i
1. SCREEN			BRI							0 ~ 63			32			32			32		32		32		32
2. CUTOFF			B							0 ~ 63 (-32 ~ +31)			11			11			11		11		(-3)		(-3)
			G							0 ~ 63 (-32 ~ +31)			7			7			7		7		(-5)		(-5)
3. WDR			R							0 ~ 63 (-32 ~ +31)			32			32			32		32		(0)		(0)
			G							0 ~ 63 (-32 ~ +31)			32			32			32		32		(0)		(0)
			B							0 ~ 63 (-32 ~ +31)			45			45			45		45		(0)		(0)
4. BRIGHT			RF							0 ~ 63 (-32 ~ +31)			39			39			39		39		---		---
			VIDEO 1(COMPOSITE/S)							(-32 ~ +31)			(-1)			(-1)			(-1)		(-1)		---		---
			VIDEO 2(COMPONENT)							(-32 ~ +31)			(0)			(0)			(0)		(0)		(0)		(0)
			VIDEO 3(COMPOSITE)							(-32 ~ +31)			(0)			(0)			(0)		(0)		---		---
5. CONT.			RF							0 ~ 63			32			32			32		32		---		---
			VIDEO							(-32 ~ +31)			(+2)			(+2)		(+2)			(+2)		(+2)		(+2)
			RF 16:9							(-32 ~ +31)			(0)			(0)			(0)		(0)		---		---
			VIDEO 16:9							(-32 ~ +31)			---			---			---		---		---		---
6. COLOUR			RF							0 ~ 63 (-32 ~ +31)			42			32			37		(-3)		---		---
			VIDEO							(-32 ~ +31)			(-1)			(0)			(-4)		(0)		(+4)		(-5)
7. TINT			RF							0 ~ 63 (-32 ~ +31)			---			---			27		(-4)		---		---
			VIDEO							(-32 ~ +31)			---			---			(0)		(+11)		---		---
8. SHARP			RF							0 ~ 63			22			22			22		22		---		---
			VIDEO							0 ~ 63			35			35			35		35		15		15
9. Y DELAY			RF							0 ~ 15			9			7			12		7		---		---
			VIDEO							0 ~ 15			7			7			7		7		---		---
			S-VIDEO							0 ~ 15			9			10			11		11		---		---
10. TINT DVD			VIDEO, S-VIDEO							0 ~ 63			34			32			32		32		---		---
			COMPONENT							(-32 ~ +31)			---			---			---		---		(-2)		(-2)
11. AMP T.SHARP			RF, VIDEO							0 ~ 63			0			0			0		0		0		0
Item		Measuring					Test point				Adjustment part									Description
		instrument
WHITE		Signal									[2. V/C]			Note:
BALANCE		generator									2. CUTOFF (B)				• Set PICTURE MODE (VSM) to "BRIGHT".
(Low light)											2. CUTOFF (G)			- COMPOSITE WHITE BALANCE -
adjustment		Remote														(1) Receive a PAL black and white signal (colour off).
		control unit									SCREEN VR					(2) Select 2. V/C from the SERVICE MENU.
											[In HVT]					(3) Select 2. CUTOFF (B) and (G).
																(4) Set each value to initial setting value with the [4] /
																[7] keys and [5] / [8] keys.
																(5) Turn the SCREEN VR fully counterclockwise, then
																slowly turn it clockwise to where a red, blue or
						V/C		PAL								green colour is faintly visible.
						2. CUTOFF		(B) ** (**)								(6) Use the [4] / [7] and [5] / [8] keys to adjust so that
								(G)		** (**)						the other 2 colours appear white.
																(7) Turn the SCREEN VR to where the single
																horizontal line glows faintly.
																(8) Press the [DISPLAY] key twice to return to the
																normal screen.
														- COMPONENT WHITE BALANCE -
																(1) Receive a PAL component black and white signal
					REMOTE CONTROL UNIT											(colour off).
																(2) Select VIDEO-2 SET from the MENU and set
				1			2	3								VIDEO-2 SET to COMPONENT.
				4			5	6								(3) Adjust COMPONENT WHITE BALANCE in the
									G CUTOFF (			)				same way as ”COMPOSITE WHITE BALANCE”.
	B CUTOFF (			)
															Adjustment Item					Variable			Initial setting value
				7			8	9												range
																						COMPOSITE		COMPONENT
	B CUTOFF (			)
									G CUTOFF (			)			2. CUT OFF		B			0 ~ 63(-32~+31)		11		(-3)
																	G			0 ~ 63(-32~+31)		7		(-5)

1-18 (No.YA139)