Read Panasonic TX-43P250 / TX-51P250 / TC-43P250 / TC-51P250 Service Manual online
Preparation:
1. Receive an cross hatch pattern with dots (pincushion).
2. Loosen the centering magnets screws.
3. Position the longer tab of the four-pole magnet to 90
degrees (uncorrected position).
VM Coil with focus correction magnet
4-pole magnet
4. Position the long tab of all alignment magnets and of the
dummy ring together in an uncorrected position.
Alignment magnet (or dummy ring)
Procedure:
1. Receive an cross hatch pattern with dots.
2. Cover the Red, Blue CRT lens, projecting Green only.
3. Turn the green electrical focus adjustment VR (on focus
pack) fully counterclockwise and note the position of the
dots at the center of the picture.
dots at the center of the picture.
4. Turn the green electrical focus adjustment VR fully
clockwise.
5. Adjust the four pole magnets until the shape of the dot
at the center of the screen is circular.
6. Adjust for best green electrical focus with green
electrical focus adjustment VR.
7. Cover the Green, Red CRT lens, projecting Blue only.
8. Repeat step 4. ~ step 6. for blue electrical focus.
9. Cover the Green, Blue CRT lens, projecting Red only.
10. Repeat step 4. ~ step 6. for red electrical focus.
11. Receive an monoscope pattern.
12. Cover the Red, Blue CRT lens, projecting Green only.
13. If the center of the monoscope pattern is not inside the
15mm circle, shown in below, adjust the centering
magnets. Repeat the alignment magnet adjustments
and four pole magnet adjustments (step 1. ~ step 6.)
magnets. Repeat the alignment magnet adjustments
and four pole magnet adjustments (step 1. ~ step 6.)
Centering magnet adjustment
14. Cover the Green, Blue CRT lens, projecting Red only.
15. Repeat step 13. for the red.
16. Cover the Green, Red CRT lens, projecting Blue only.
17. Repeat step 13. for the blue.
18. Following adjustments, fix the centering magnets of DY,
dummy rings of VM coil, four pole magnets of VM coil
and the alignment magnets of VM coil to prevent them
from moving.
and the alignment magnets of VM coil to prevent them
from moving.
7.5.
Alignment magnet Adjustment
18
TX-43P250 / TX-51P250 / TC-43P250 / TC-51P250
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