Ir Adjustment (Va-68 Board); Chroma Comb Filter Adjustment (Va-68 Board) - Sony Video8 CCD-F501 Service Manual

10-5-4, IR Adjustment (VA-68 Board)
Mode E-E
Signal Color bar
— Point _| Pin @ of IC201
Measuring Instrument | Oscilloscope
Adjusting Element RV201
Minimum red _ residual
'component (80 mVp-p or less)
Connections:
1) Connect TPO03 (Pin @ of 1C201) and TPOO7 (Pin @ of
1C201) with a jumper wire.
Adjusting Method:
1) Minimize the red residual chroma component with RV201.
2) After the adjustment, remove the jumper wire.
red residual chroma component
before
adjustment
after
adjustment
k— H —+
80 mVp-p or less
Fig. 10-12.
10-5-5. Chroma Comb Filter Adjustment
(VA-68 Board)
Mode Record
Signal, Color bar
Measurement Point Pin @ of IC201
Measuring Instrument | Oscilloscope
Sade RV204
Adjusting Element RV211
5 Minimum red residual chroma
[ Specified Value component (30 mVp-p or less)
Adjusting method:
1) Adjust RV204 and RV211 alternately and minimize the red
residual chroma component.
red residual chroma component
before
adjustment
after
adjustment
b—— H —+|
30 mVp-p or less
Fig. 10-13.
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