Ntsc Zoom Vertical Size Adjustment (Vsize); Ntsc Horizontal Phase Adjustment (H-Pos); Hd 1080I Horizontal Phase Adjustment (H-Pos); Trapezoid Adjustment (Ewtra) - Panasonic PT-47WX52F Service Manual

NTSC ZOOM Vertical size adjustment
(VSIZE)
Note: 1080i, 480p, 480i pattern can be obtained from
Panasonic's TU-DST51 set-top box DTV
decoder.
1. Apply a NTSC pattern (see avobe note) .
2. Change aspect to ZOOM mode.
3. Repeat vertical size adjustment from step 2
4. Try making circle seem rounded (in proportion)
Panasonic
Figure 36. Vertical size adjustment
NTSC Horizontal phase adjustment
(H-POS)
Note: 1080i, 480p, 480i pattern can be obtained from
Panasonic's TU-DST51 set-top box DTV
decoder.
1. Apply a NTSC crosshatch pattern with dots.
2. Set CONV "MUTE" DAC from 00 to 01 (disabling
digital convergence).
3. Set VIDEO "C_OFF" DAC from 00 to 01 to project
only green.
4. Turn green deflection yoke until line is perfectly
horizontal.
5. Adjust H-POS DAC data so that pattern is in the
center of screen.
Figure 37. H phase adjustment
6. Enable digital convergence by changing DAC
MUTE from 01 to 00.
7. Set VIDEO "C_OFF" DAC from 01 to 00.
Service Manual
FORMAT
HD 1080i Horizontal phase adjustment
(H-POS)
Note: 1080i, 480p, 480i pattern can be obtained from
Panasonic's TU-DST51 set-top box DTV
decoder.
1. Apply a HD 1080i pattern.
2. Repeat NTSC horizontal phase adjustment from
step 2.
Figure 38. H Phase adjustment

Trapezoid adjustment (EWTRA)

1. Set default value

NTSC Pincushion adjustment (PCC)

Note: 1080i, 480p, 480i pattern can be obtained from
Panasonic's TU-DST51 set-top box DTV
decoder.
Procedure:
1. Apply a NTSC crosshatch pattern with dots.
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. If the distance at "A" is not 10 ± 5mm, enter "H
DEF" "H WID" mode and adjust by VOLUME UP/
DOWN until it is 10 ± 5mm. See figure 39.
A = 10 ± 5mm
A
Figure 39. Pincushion adjustment
NOT GOOD
5. If not all corners of cross hatch appear in screen,
enter V DEF "V SIZE" mode and adjust until they
appear.
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Panasonic
FORMAT
Line with dot
GOOD NOT GOOD