Panasonic PT53TW53G - 53" PROJECTION TV HD, Service Manual, Page: 169 / 246

9. Set VIDEO “C_OFF” DAC from 01 to 02 to project only red.
10. Adjust red deflection coil until the horizontal center line matches the
pattern of the grid and is leveled.
11. Adjust red centering magnets until the pattern center is at the
appropriate distance as indicated on figure.
12. Enable digital convergence by changing DAC MUTE from 01 to 00.
13. Set VIDEO “C_OFF” DAC from 02 to 00. Following the adjustment,
make sure that all deflection coils are pushed completely toward the
CRT cones and that all screws are tightened.
17.4. NTSC Vertical linearity adjustment (V-C and V-S)
This adjustment is intended to make the picture vertically proportional (top, center and bottom) for
NTSC mode
NOTE:
1080i, 480p, 480i pattern can be obtained from Panasonic’s TU-DST51 set-top box DTV decoder.
1. Apply a NTSC pattern that lets adjust the image to correct vertical
linearity (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-C” and “V-S” DAC until vertical size is proportional on
top and bottom. Confirm to correct linearity in the middle of the screen.
6. Set DAC MUTE from 01 to 00 (disabling digital convergence).
7. Set VIDEO “C_OFF” DAC from 01 to 00
17.5. HD 1080i Vertical linearity adjustment (V-C and V-S)
This adjustment is intended to make the picture vertically proportional (top, center and bottom) for HD
1080i mode
45