Wf Out R/B Dc Offset Adjustment; Carrier Balance Adjustment - Sony CCU-TX7 Service Manual

4-2-13. WF OUT R/B DC OFFSET Adjustment

Equipment : Waveform monitor
To be extended : ES-20 board
Preparation :
. Select the BARS mode on the RCP-TX7.
Test point : WF OUT connector/CCU rear panel
Adjustment Procedure :
. Adjust 1RV511 (R DC BAL), 1RV514 (B DC BAL)/ES-
20 board so that the DC levels of "R" and "B" are same as
that of "G" even after the MONITOR SELECT button /
RCP-TX7 is selected "R", "G" and "B".
: DC level ± 1 mV ("G")
Specification
CCU-TX7 (E)/V1

4-2-14. Carrier Balance Adjustment

Equipment : Vectorscope (MAX GAIN)
To be extended : ES-20 board
Preparation :
. Select the BARS mode on the RCP-TX7 or COU-TX7.
Test point : VBS 1 OUT connector/CCU rear panel
Adjustment Procedure :
. Adjust 1RV805 (I (V) CAL) and 1RV809 (Q(U) CAL)/
ES-20 board so that the luminance point of black level is
located in the center of the vectorscope.
[For NTSC] [For PAL]
g
R
M
G
Y
L
B
G
Cy
cy
R
g
M
G
V
75%
100%
Y
b
L
U
yl B
G
Cy mg
r
4-9