Vertical Size Adjustment (V-Amp) - Panasonic PT-53X54J Service Manual

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17.6 Vertical size adjustment (V-AMP)

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This adjustment is intended to correct the vertical size of the picture.
NOTE:
1080i, 480p, 480i pattern can be obtained from Panasonics TU-DST51 set-top box DTV decoder.
1. Apply a pattern that lets adjust the image to correct vertical size (see above note).
2. Set VIDEO C_OFF DAC from 00 to 01 (to project only green).
3. Set DAC MUTE from 00 to 01 (disabling digital convergence).
4. Adjust centering magnets so that the center of the pattern get aligned with screen frame center.
5. Adjust VDEF V-AMP DAC until vertical size is proportional on top and bottom.
6. Set DAC MUTE from 01 to 00 (disabling digital convergence).
7. Set VIDEO C_OFF DAC from 01 to 00.
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http://tsn.pstc.panasonic.com/viewing/NA/PT-53X54J/SVC/s1706000000.html [23/04/2012 12:16:28 p.m.]