Panasonic PT-53X54J Service Manual page 52

1080i, 480p, 480i pattern can be obtained from Panasonic's 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.
17.7. Horizontal size adjustment / (H_POS)
This adjustment is intended to correct the horizontal position of the picture.
NOTE:
1080i, 480p, 480i pattern can be obtained from Panasonic's TU-DST51 set-top box DTV decoder.
1. Apply a 1080i HD pattern that lets adjust the image to correct
horizontal position (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. Turn green deflection yoke until line is perfectly horizontal.
5. Adjust "H WID" DAC data so that pattern has the correct
horizontal size.
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