R Level Adjustment; B Level Adjustment - Sony CCU-TX7 Service Manual

4-2-11. R Level Adjustment

Equipment : Waveform monitor
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 → "R/G/B"
Adjustment Procedure :
1. Test point : R/R-Y/C 1 OUT connector/CCU rear panel
Adjusting point : 1RV509 (R MAT BAL)/ES-20 board
Specification : A = 0
A = 0
[For NTSC]
A
2. Adjusting point : 1RV510 (R LEVEL)/ES-20 board
: B = 700 ± 10 mV [ For NTSC]
Specification
B = 700 ± 10 mV [ For PAL]
[For NTSC]
B
SYNC WIDTH
RV3
ES-20
PHASE RV2
RV7
H PHASE
H
SYNC PHASE
SC RV6
SC PHASE
TP1
RV4
0
SC FREQUENCY
180°
RV5
OUT PUT 1
SC-H PHASE
R/G/B
Y/R-Y/B-Y
E1
Y/C
OUT PUT 2
G MAT BAL2
R/G/B
S1
RV506
Y/R-Y/B-Y
Y/C
TP501
RV508
RV507
G MAT BAL1
G LEVEL
RV511
R DC BAL
RV510
R LEVEL
RV514
B DC BAL RV513
B LEVEL
4-8
+7
mV [For NTSC]
_0
+7
mV [For PAL]
_0
[For PAL]
A
[For PAL]
B
Y LEVEL (VBS)
SYNC LEVEL (VBS)
RV803
RV800 RV801
SYNC LEVEL(COMP)
Y SETUP LEVEL
(NTSC ONLY)
B-Y LEVEL
B WHT BAL R WHT BAL
RV505 RV500
TP502 R-Y BLK BAL
RV501
R MAT BAL
RV509
TP503 R-Y GAIN ADJ
RV502
B MAT BAL
RV512 RV1000
RV504 RV503
B-Y GAIN ADJ B-Y BLK BAL

4-2-12. B Level Adjustment

Equipment
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 → "R/G/B"
Adjustment Procedure :
1. Test point : B/B-Y 1 OUT connector/CCU rear panel
Adjusting point : 1RV512 (B MAT BAL)/ES-20 board
Specification
[For NTSC]
A
2. Adjusting point : 1RV513 (B LEVEL)/ES-20 board
Specification
[For NTSC]
B
RV804
CHROMA LEVEL
RV802
RV810
E3
Y LEVEL(COMP)
RV812
TP7
TP5
POSITION TP4
TP2
TP3
LEVEL
ES-20 Board
(A SIDE)
: Waveform monitor
+7
: A = 0 mV [For NTSC]
_0
+7
A = 0 mV [For PAL]
_0
[For PAL]
A
: B = 700 ± 10 mV [For NTSC]
B = 700 ± 10 mV [For PAL]
[For PAL]
B
CCU-TX7 (E)/V1