Centering Magnets Adjustment - Panasonic PT-53X54J Service Manual

http://tsn.pstc.panasonic.com/viewing/NA/PT-53X54J/SVC/s1702000000.html

17.2 Centering magnets adjustment

TOP PREVIOUS NEXT
NOTE:
1080i, 480p, 480i pattern can be obtained from Panasonics TU-DST51 set-top box DTV decoder.
Procedures:
1. Apply a 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. Loose the deflection coil screw on the green CRT.
5. Confirm that the horizontal center line is perfectly horizontal to screen frame. If not turn deflection yoke.
6. Adjust green deflection coil until the horizontal center line is horizontal.
7. 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.
8. 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.
9. Adjust blue centering magnets until the pattern center is at the appropriate distance as indicated on the following figure.
10. Set VIDEO C_OFF DAC from 03 to 02 to project only red.
11. Adjust red deflection coil until the horizontal center line matches the pattern of the grid and is leveled.
12. Adjust red centering magnets until the pattern center is at the appropriate distance as indicated on figure.
13. Enable digital convergence by changing DAC MUTE from 01 to 00.
14. 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.
TOP PREVIOUS NEXT
http://tsn.pstc.panasonic.com/viewing/NA/PT-53X54J/SVC/s1702000000.html [23/04/2012 12:16:25 p.m.]
Centering magnets adjustment