3-15
CCU-700A
CCU-700AP
B-Y OUT
B
3-3-21. R-Y/B-Y Black Balance Adjustment
Rank
:
A
Equipment
:
Vectorscope
To be extended
:
VA-156 board
Preparation
• CLOSE button/MSU-700
→
“ON”
• Vectorscope mode
→
MAX GAIN mode
• Set the MASTER BLACK adjustment value that is
displayed on the display block to “–99” with the MAS-
TER BLACK control/MSU-700.
Test point
:
VBS 1 OUT connector/CCU rear panel
Adjustment Procedure
• Observe the vectorscope screen and adjust
1
RV125 (R-
Y BLK) and
1
RV221 (B-Y BLK)/VA-156 board so that
the beam spot of black level sit at the nearly center of the
vectorscope.
Note:
After the adjustment, set as follows.
• GAIN switch/Vectorscope
→
75% CAL
• MASTER BLACK control/MSU-700
→
“0”
3-3-22. R-Y/B-Y OUT Level Adjustment
Rank
:
A
Equipment
:
Oscilloscope
To be extended
:
VA-156 board
Preparation
• BARS button/MSU-700
→
“ON”
• R-Y OUT connector/CCU rear panel
→
75
Z
Terminated
• B-Y OUT connector/CCU rear panel
→
75
Z
Terminated
Adjustment Procedure
VA-156 board
Test point/
Adj. point Specifications
rear panel
R-Y
R-Y OUT
1
RV533
[For NTSC] A = 700
±
5 mV p-p
[For PAL]
A = 525
±
5 mV p-p
B-Y
B-Y OUT
1
RV670
[For NTSC] B = 700
±
5 mV p-p
[For PAL]
B = 525
±
5 mV p-p
3-3. Video Signal System Adjustment
A
R-Y OUT
