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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.
HD 1080i Pincushion adjustment (PCC)
Note: 1080i, 480p, 480i pattern can be obtained from Panasonic�s TU-DST51 set-top box DTV decoder.
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.
NTSC Horizontal size adjustment (H WID)
1080i, 480p, 480i pattern can be obtained from Panasonic�s TU-DST51 set-top box DTV decoder. This adjustment is intended to adjust horizontal size of the picture. 1. Apply a NTSC pattern.
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.
Note:
Procedure:
1. Apply a HD 1080i pattern. 2. Repeat NTSC pincushion adjustment from step 2
Centering magnets adjustment
1080i, 480p, 480i pattern can be obtained from Panasonic�s TU-DST51 set-top box DTV decoder. Procedures: 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. Loosen the deflection coil screw on the green CRT. 5. Adjust green deflection coil until the horizontal center line is horizontal. 6. Adjust centering magnets until the green pattern is equal on left and right. Adjust also for horizontal and vertical tilt. Note: Push deflection coil to top of CRT neck, then tighten deflection screw after adjusting each CRT centering and tilt.
7. Set VIDEO �C_OFF� DAC from 01 to 03 to project only blue. Adjust deflection coil until the horizontal center line matches the pattern of the grid and is leveled. 8. Adjust blue centering magnets until the pattern center is at the appropriate distance as indicated on figure 40.
Note:
HD 1080i Horizontal size adjustment (H WID)
1080i, 480p, 480i pattern can be obtained from Panasonic�s TU-DST51 set-top box DTV decoder. This adjustment is intended to adjust horizontal size of the picture. 1. Apply a HD 1080i pattern. 2. Repeat NTSC horizontal size adjustment from step 2. Note:
Convergence adjustment
Note: 1080i, 480p, 480i pattern can be obtained from Panasonic�s TU-DST51 set-top box DTV decoder. It is strongly recommended to first read and understand the following section prior to make any adjustment. Convergence adjustment must be perform for 480i-p (same for interlace & progressive), 1080i and ZOOM 480i.
Note:
R
G
B
d
d
d measured in mm 28 mm
Turn PTV on and allow it to warm up for 30 minutes prior to making adjustments (WHITE PATTERN).
Note:
This PTV uses the scheme described below to correct for misconvergence of the three CRT projection tubes. There are various modes to this operation.
Figure 40. Centering magnets adjustment. 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 40.
Preparation: Place the convergence alignment template (see �Convergence alignment template� on page 33) over the PTV screen. Align the center lines of the template with the mechanical center markers on the PTV screen Service Manual
