Panasonic PT-53X54J Service Manual page 53

6. Set DAC MUTE from 00 to 01 (disabling digital convergence).
7. Set VIDEO "C_OFF" DAC from 01 to 00.
17.8. Horizontal size adjustment (H WID)
This adjustment is intended to adjust horizontal width of the picture.
NOTE:
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 horizontal size.
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. In service mode, adjust "H WID" DAC until the picture horizontal
size is balanced at left and right side of screen.
5. Set DAC "MUTE" from 01 to 00 (disabling digital convergence).
6. Set VIDEO "C_OFF" DAC from 01 to 00.
17.9. Sub-Bright adjustment (BRIGH) and ABL check
This adjustment is intended to set 7.5 IRE signal to black level mode.
Procedure:
1. Set PICTURE MODE TO VIVID, PICTURE settings to normal,
NATURAL COLOR to OFF and COLOR TEMPERATURE to
NORMAL.
2. Connect meter (positive lead) to D31 pin 2 and (negative lead) to
D31 pin 1.
3. Apply a color bar with no color or if available a grey levels pattern
(see picture).
Gray bar pattern.
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