Chroma (Vbs) Level Adjustment; Y (Vbs) Level Adjustment - Sony DXC-D30P Service Manual

3-3-6.

Chroma (VBS) Level Adjustment

Equipment: Verctorscope
To be extended: ES-12 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 switch or DOWN
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
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-12 board
1FL502 (PHASE)/ES-12 board
1RV504 (CHROMA VBS LEV)/ ES-12 board
3. Then, perform above procedure item 1 again.
[for NTSC]
M
G
R
Y
L
B
G
C
Y
DXC-D30 (UC)
DXC-D30P (CE)
3-3-7.
Equipment:
To be extended: ES-12 board
Preparation:
Test point:
Adjustment Procedure
1.
switch so that burst
2.
[for PAL]
R
M
G
75%
100%
Y
L
B
G
C
Y
3-7

Y (VBS) Level Adjustment

Waveform monitor
OUTPUT/DL/DCC + switch/camera side
VIDEO OUT connector/camera side
[for NTSC]
• SERVICE menu "PAGE 9"
→ SET UP
: ON
MAT DEST : SMPTE
• SERVICE menu "PAGE 5"
→ S-UP LVL :
Adjust the UP switch or DOWN switch.
Specification : A = 7.5 ± 0.5 IRE (See below waveform)
[for PAL]
• SERVICE menu "PAGE 9"
→ COMP LVL : 525 (not 700)
Adjusting point: 1RV501 (Y LEVEL)/ES-12 board
[for NTSC] B = 100 ± 2 IRE
Specification:
[for PAL]
[for NTSC] [for PAL]
FL502
CN501
DL501
DL502
ES-12 BOARD -A SIDE-
→ BARS
B = 700 ± 10 mV
DL503
FL502
DL504
FL503
RV503 RV505 RV501
B-Y LEV C (Y-C) Y (VBS)
TP1 E1
RV504 RV502
C (VBS) Y (Y-C)