G Level Adjustment; R-Y/B-Y White Black Balance Adjustment - Sony CCU-TX7 Service Manual

4-2-9. R-Y/B-Y White Black Balance
Adjustment
Equipment : Oscilloscope
To be extended : ES-20 board
Preparation :
. Select the BARS mode on the RCP-TX7 or COU-TX7.
Adjustment Procedure :
1. Test point : TP505 (GND : E1)/ES-20 board
Specification : A = 0 ± 5 mV
C = 0 ± 5 mV
E = 525 ± 5 mV p-p
C
A
2. Test point : TP506 (GND : E1)/ES-20 board
Specification : B = 0 ± 5 mV
D = 0 ± 5 mV
F = 525 ± 5 mV p-p
D
B
3. Repeat procedure 1 and 2 several times.
CCU-TX7 (E)/V1
1RV500
1RV501
1RV502
E
1RV505
1RV503
1RV504
F

4-2-10. G 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 : G/Y/Y1 OUT connector/CCU rear panel
Adjusting point : 1RV507 (G MAT BAL1)/ES-20 board
1RV506 (G MAT BAL2)/ES-20 board
Specification : A = B = 0
A = B = 0
2. Adjusting point : 1RV508 (G LEVEL)/ES-20 board
: C = 700 ± 10 mV [For NTSC]
Specification
C = 700 ± 10 mV [For PAL]
[For NTSC]
C
+7
mV [For NTSC]
_0
+7
mV [For PAL]
_0
RV507
RV506
B A
[For PAL]
C
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