Horizontal Hold Adjustment - Sony DSR-250 Service Manual

2-2-4. Horizontal Hold Adjustment

Note
When this adjustment is carried out, "2-2-2. Heater
Voltage Pre-Adjustment" must be confirmed.
Object :
White Window chart
Equipment : Waveform monitor, Oscilloscope
Trigger :
CH2/Oscilloscope
Preparation
[DSR-250/250P]
1. Shoot the White Window chart and adjust the lens zoom
so that the picture on the monitor screen becomes all
white.
Monitor Screen
2. IRIS switch → MAN
Adjust the iris control for the white level at VIDEO
OUT connector on the camera is 100 ± 2 IRE (PAL :
700 ± 14 mV).
Test point :
CH1 TP4 (G1)/MAIN board
CH2 TP9 (+H DEF)/MAIN board
Adjusting point : 1RV5 (H-HOLD)/SUB board
Adjustment :
CH-1
CH-2
SUB BOARD
R76
RV14
RV23 RV6
S4
RV5
DXF-801/801CE
A B
A=B
CN9
RV20
RV24
RV22
S3 S1
– COMPONENT SIDE –
MAIN BOARD
CN7
TP13
TP12 TP1
2-2. Viewfinder System Adjustment
TP4
TP5
TP6
TP8 TP9
TP7
TP10
TP11
TP3
TP2
– SOLDERING SIDE –
2-3 (E)