Pincushion Adjustment (Pcc) - Panasonic PT-53X54J Service Manual

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17.3 Pincushion adjustment (PCC)

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This adjustment is intended to correct curved sides of the picture.
NOTE:
1080i, 480p, 480i pattern can be obtained from Panasonics TU-DST51 set-top box DTV decoder.
Procedure:
1. Apply a 1080i HD crosshatch pattern that lets adjust the image to correct curved sides (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. If the distance at A is not 13 ± 5mm, enter H DEF H WID DAC and adjust with VOLUME UP/DOWN keys until it
measures 13± 5mm.
5. If not all corners of cross hatch appear in screen, enter V DEF V-AMP DAC and adjust until they appear.
6. Confirm that measurement of A has not changed.
7. Enable digital convergence by changing DAC MUTE from 01 to 00.
8. Set VIDEO C_OFF DAC from 01 to 00.
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Pincushion