Sony DXF-20W, Руководство по обслуживанию

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2-3 (E)
DXF-20W
2 mm (H size)
Chart frame
Underscan monitor frame
2-2-3. Horizontal Frame Adjustment
Note
This adjustment and “2-2-2. Focus Adjustment”, “2-2-4.
Heater Voltage Adjustment” and “2-2-5. Bright Calibration
Adjustment” affect with each other. Therefore, repeat the
adjustment until all specifications are met.
Preparation
.
Object: Resolution chart
. Measuring equipment: Waveform monitor
. Remove the eye cap from the viewfinder.
.
Viewfinder
BRIGHT control
→
Mechanical center
CONTRAST control
→
Mechanical center
PEAKING control
→
Fully counterclockwise 3
Adjustment Procedure
1. Adjust the lens zoom so that the resolution chart
frame coincides with the underscanned picture frame
on the monitor screen.
2. Set the resolution on the monitor screen to the best
state with the lens focus.
3. Adjust the lens iris so that the white level at VIDEO
OUT connector on the camera is as follows.
For NTSC: 100
±
2 IRE
For PAL: 700
±
14mV
Monitor screen
4. Adjust
1
RV2 (H-SIZE WIDE)/VF-88 board so that H
size of resolution chart is underscanned by approxi-
mately 2 mm from the CRT picture frame.
Viewfinder screen
RV4
RV3
RV2
RV1
VF-88 board