Stair Case Adjustment; Sdi Frequency Adjustment - Sony CCU-590 Maintenance Manual

4-3-8. STAIR CASE Adjustment

Adjustment category: A
Note:
This section describes temporary adjustment to be per-
formed after repair.
Perform readjustment while viewing characteristics of the
waveform monitor during system setup.
Measuring instrument: Oscilloscope
Extended board:
EN-156B board
Measurement point:
TP302/EN-156B board
Adjustment points: 1RV301 (STAIR CASE
POSITION)/EN-156B board
1RV302 (STAIR CASE
LEVEL)/EN-156B board
A = 10.0 ± 0.5 V p-p (1RV302)
Specification:
B = 0 ± 0.5 V dc (1RV301)
B C
A
TP501 TP502
1
2
TP301
3
S704
S705
S703
S701
4
S702
S706
S709 S708 S707
4-8
A
GND
B
D E F
E2
TP303
RV102
E1
RV303
TP304
RV304
RV101
TP305
RV305
E3 RV103
TP306
EN-156B BOARD (SIDE A)

4-3-9. SDI FREQUENCY Adjustment

Adjustment category:
Measuring instrument: Frequency counter
Extended board:
Measurement point:
Preparation:
. S701-1 (VBS1-SDI1)/EN-156B board → "ON" (SDI)
. S703-3 (FREE RUN)/EN-156B board → "ON"
Adjustment point:
Specification:
Setting after adjustment
. S701-1 (VBS1-SDI1)/EN-156B board → Restore the
previous setting.
. S703-3 (FREE RUN)/EN-156B board → "OFF"
Measurement point:
Preparation:
. S701-3 (VBS3-SDI3)/EN-156B board → "ON" (SDI)
. S703-4 (FREE RUN)/EN-156B board → "ON"
Adjustment point:
Specification:
Setting after adjustment
. S701-3 (VBS3-SDI3)/EN-156B board → Restore the
previous setting.
. S703-4 (FREE RUN)/EN-156B board → "OFF"
G H
TP101
TP503
TP102 RV104 RV501
S301
TP504
RV302
TP302
TP104
RV301
RV106
RV502
TP103
RV105
A
EN-156B board
TP503/EN-156B board
1RV501/EN-156B board
27 ± 0.1 MHz
TP504/EN-156B board
1RV502/EN-156B board
27 ± 0.1 MHz
J
CN902
CCU-590/P/V1(E)