Panasonic TC-29P10N, Руководство по обслуживанию, Страница: 25 / 61

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Focus adjustment
Adjustment after board exchange
Adjustment after [DF] DAF board exchange
Adjustment jig Color pattern generator
Measuring location TV screen (visual observation)
Input signal Crosshatch pattern
1. Focus adjustment
1. Receive a crosshatch pattern.
2. Adjust Focus 1 so that the thickness of the vertical line
in the
figure on the left becomes a minimum.
3. Adjust Focus 2 so that the horizontal line thickness at the intersection
of the vertical line and the horizontal line becomes a minimum.
4. Confirm that the focus at the center and at the outer circumference is
balanced. In case of bad balance, repeat the adjustments 2. and 3..
Adjustment conditions
Set GR to "ON". (Refer to page 10 in the Service Manual.)
Black level "0" Center
Picture "+30" Maximum
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Adjust with Focus 2 to a minimum.
Adjust with Focus 1 to a minimum.
Image adjustment
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Adjustment jig Color pattern generator
Measuring location TV screen (visual observation)
Adjustment location DAF board [DF], R1577
Input signal Crosshatch pattern
1. DAF Phase Adjustment
1. Receive a crosshatch pattern
2. Use Focus 2 to adjust the center to underfocussed condition.
3. Adjust R1577 on the DAF board [DF] so that the left-right balance of
the intersection of the horizontal line and the vertical lines
becomes equal.
4. Perform focus adjustment.
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