R-Y/B-Y A/D Level Adjustment - Sony CCU-590 Maintenance Manual

4-5-13. R-Y/B-Y A/D Level Adjustment

Adjustment category: C
Measuring instrument: Vectorscope
Extended board:
IV-57B board
Preparation:
Set the TRIAX TEST mode to ON using the following
steps.
. Display page 7 (TRIAX VIDEO ADJ) of the CCU
CONFIGURATION menu, and turn the CONTROL
SELECT switch on the EN board panel to "ENTER" for
two seconds or more for unlocking.
. Turn the +/_ switch on the EN board panel to the _
side, put the → mark at TRIAX TEST, and then turn the
CONTROL SELECT switch to "ENTER" to select
TRIAX TEST.
. Turn the +/_ switch to the _ side, and set TRIAX TEST
to ON.
When BARS is turned ON (or OFF) from RM or RCP in
this state, the CCU color-bar (or camera color-bar) is
displayed.
Adjust the Y A/D level and R-Y/B-Y A/D level of the IV
board by equalizing the camera color-bar output with the
CCU color-bar.
RV105
TP104
F
E
D
C
B
A
RV101 RV103
1
2
IV-57B BOARD (SIDE A)
CCU-590/P/V1(E)
RV106 RV104
RV401
TP103 TP102
S102
E3
S104
S101
S103
S105
S107 S108
RV102
5
3 4
CCU CONFIGURATION menu page 7
1) When locking
<TRIAX VIDEOADJ> C07 TOP
* LEVEL Y :
* B-Y : +14
* R-Y : -08
* BLACK Y : +11
* B-Y : -02
* R-Y : -03
* AXIS B-Y :
* R-Y : -01
*CHU H-PHASE : -01
* TRIAX TEST : OFF CLEAR*
2) When unlocking
Press "ENTER" of the CONTROL SELECT switch on the
EN-156B board for two seconds or more for unlocking.
<TRIAX VIDEOADJ> C07 TOP
LEVEL Y :
B-Y : +14
R-Y : -08
BLACK Y : +11
B-Y : -02
R-Y : -03
AXIS B-Y :
R-Y : -01
CHU H-PHASE : -01
TRIAX TEST : OFF CLEAR
Measurement point: VBS 2 OUT terminal/CCU rear
panel
Adjustment point: 1RV105/IV-57B board
1RV106/IV-57B board
Specification:
When BARS button of RM (or
RCP) is changed ON and OFF
repeatedly, adjust 1RV105 and
1RV106 alternately so that the
vector waveform remains
unchanged.
[For NTSC]
R
M
G
Y
L
B
G
C
Y
After the above adjustment is completed, readjust 4-5-11
repeatedly until the specifications of 4-5-11 and 4-5-13 are
satisfied.
0 *
*
*
*
*
*
0 *
*
*
0
0
[For PAL]
R
M
G
Y
L
B
G
C
Y
4-21