Y Offset Adjustment; Y 1St Agc Adjustment - Sony CCU-590 Maintenance Manual

4-4-9. Y OFFSET Adjustment

Adjustment category: A
Note:
Confirm 45 MHz frequency on
the MD-132B board (CA-590/
590P).
Measuring instrument: Oscilloscope
Extended board:
DM-140 board
Measurement point: TP701 (GND: E1)/DM-140
board
Adjustment point: 1RV601 (Y OFFSET ADJ)/
DM-140 board
A = 0 ± 3 mV
Specification:
BLKG
A
SYNC
CCU-590/P/V1(E)

4-4-10. Y 1st AGC Adjustment

Adjustment category: B
Measuring instrument: Oscilloscope
Extended board: DM-140 board
Preparation:
. S1 (CABLE LENGTH)/DM-140 board → "F" (AUTO)
. S101 (Y 2nd AGC)/DM-140 board → "OFF"
Measurement point:
TP701 (GND: E1)/DM-140
board
Adjustment point: 1RV161 (Y AGC CONT)/DM-
140 board
A = 1400 ± 40 mV
Specification:
Setting after adjustment
. S101 (Y 2nd AGC)/DM-140 board → "ON"
H
TP601
RV601
G
RV701
TP101 E101
F
TP603 TP602
S101
RV161
RV602
RV603
TP102
E
TP1
D
S1
C
B
A
RV902
RV702 RV802
1 2
DM-140 BOARD (SIDE A)
A
CN902
RV803
RV903
TP902
RV901
RV801
S301 TP301
E301
TP803 TP802
RV301
RV804
RV805
TP302
TP501
LV501
TP502
RV502
RV501
RV503
TP503
TP505
RV504
TP504
TP901
TP701 TP801
4
E1
3
4-13