Sony DXC-D30WSP service manual Chroma VBS Level Adjustment, To be extended ES-22 board Preparation

3-3-6. Chroma (VBS) Level Adjustment

Equipment: Verctorscope

To be extended: ES-22 board

Preparation:

•GAIN switch/Verctorscope → 75 % CAL

•Adjust the PHASE control on the vectorscope so that the burst spot is overlapped to the 75 % axis.

•OUTPUT/DL/DCC+switch/camera side → BARS

Test point: VIDEO OUT connector/camera side

Adjustment Procedure:

1.[for NTSC]

•SERVICE menu “PAGE 7”

→B-Y BST :

Note: In case of NTSC, make sure that “R-Y BST” must be “0”.

•Adjust the UP 4switch or DOWN $ switch so that burst spot is located at 75 % scale mark on the vectorscope screen.

[for PAL]

• SERVICE menu “PAGE 7”

→R-Y BST :

B-Y BST :

•Adjust “R-Y BST” and “B-Y BST” alternately by UP 4 switch or DOWN $ switch so that burst spot is located at 75 % scale mark on the vectorscope screen.

2.Adjust the following controls alternately so that each beam spot stays inside the reference frame “ 4”.

1RV503 (B-Y LEV)/ES-22 board

1FL502 (PHASE)/ES-22 board

1RV504 (CHROMA VBS LEV)/ ES-22 board

3.Then, perform above procedure item 1 again.

[for NTSC]			[for PAL]
	MG		R
	R			MG
			75%
YL		YL	100%
	B			B
G	CY	G	CY

3-3-7. Y (VBS) Level Adjustment

Equipment: Waveform monitor

To be extended: ES-22 board

Preparation: OUTPUT/DL/DCC+switch/camera side → BARS

Test point: VIDEO OUT connector/camera side

Adjustment Procedure

1.[for NTSC]

• SERVICE menu “PAGE 9”

→ SET UP : ON MAT DEST : SMPTE

• SERVICE menu “PAGE 5”

→S-UP LVL :

Adjust the UP 4 switch or DOWN $ switch. Specification : A = 7.5 ±0.5 IRE (See below

waveform) ---- NTSC only

[for PAL]

•SERVICE menu “PAGE 9”

→COMP LVL : 525 (not 700)

2.Adjusting point: 1RV501 (Y LEVEL)/ES-22 board

Specification:	[for NTSC]	B = 100	±2 IRE
	[for PAL]	B = 700	±10 mV
[for NTSC]		[for PAL]

FL501
				DL503
CN501
		FL502
DL501
				DL504
			FL503
DL502		RV503	RV505		RV501
	E1	B-Y LEV	C (Y-C)		Y (VBS)
TP1
		RV504		RV502
		C (VBS)		Y (Y-C)
ES-22 BOARD -A SIDE-

DXC-D30WS/P(E)/V1 3-7