Color Vector Adjustment; R-Y/B-Y Out Level Adjustment - Sony CCU-TX7 Service Manual

4-2-15. Color Vector Adjustment

Equipment : Vectorscope, Waveform monitor
To be extended : ES-20 board
Preparation :
. GAIN Switch/vectorscope → "75% CAL"
. Adjust the PHASE control on the vectorscope so that the
burst spot is aligned to the 75% axis.
. Select the BARS mode on the RCP-TX7 or COU-TX7.
Test point : VBS 1 OUT connector/ CCU rear panel
Adjustment Procedure :
1. Adjust 1RV806 (BURST LEVEL)/ES-20 board so that
the burst spot is located at 75% scale mark on the
vectorscope screen.
2. Adjust the following adjusting controls so that all
luminance points are inside the respective "4" mark on
the vectorscope.
1RV807 (BURST PHASE)/ES-20 board
1RV808 ((U) LEVEL)/ES-20 board
1RV810 (CHROMA LEVEL)/ES-20 board
1FL800 (QUAD)/ES-20 board
[For NTSC] [For PAL]
g
R
M
G
Y
L
B
G
Cy
3. Repeat procedure 1 and 2 several times.
4-10
cy
R
g
M
G
V
75%
100%
Y
b
L
U
yl
B
G
Cy mg
r

4-2-16. R-Y/B-Y OUT Level Adjustment

Equipment : Oscilloscope
To be extended : ES-20 board
Preparation :
. Select the BARS mode on the RCP-TX7 or COU-TX7.
. S800 (R/G/B, Y/R-Y/B-Y, Y/C)/ES-20 board
→ "Y/R-Y/B-Y" (Center position)
. R/R-Y/C1 OUT connector/CCU rear panel
. B/B-Y1 OUT connector/CCU rear panel
Adjustment Procedure :
ES-20 board [For NTSC (UC)]
Test point Adj. point
(GND : pin 91)
R-Y pin 92 1RV811
B-Y pin 90 1RV812
ES-20 board [For PAL]
Test point Adj. point
(GND : pin 91)
R-Y pin 92 1RV811
1RV812
B-Y pin 90
R-Y OUT
→ "75 Z termination"
→ "75 Z termination"
Specifications
A = 700 ± 5 mV p-p
B = 700 ± 5 mV p-p
Specifications
A = 525 ± 5 mV p-p
B = 525 ± 5 mV p-p
B-Y OUT
A
CCU-TX7 (E)/V1
B