17.3. Centering magnets adjustment
NOTE: 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 the following figure.
Centering magnets adjustment
