panas TX-51P100X Service Manual page 14

Alignment Adjustment
Preparation:
1. Receive an cross hatch pattern with dots (pincush-
ion).
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 magneto
4-pole magnet
4. Position the long tab of all alignment magnets and
of the dummy ring together in an uncorrected posi-
tion.
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.
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.
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Dummy ring
4-pole magnet
Alignment magnet
Set 90 degrees
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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.
Focus Pack
R:Forcus
G:Forcus
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 cen-
tering magnets. Repeat the alignment magnet
adjustments and four pole magnet adjustments
(step 1. ~ step 6.)
15mm diameter circle
φ 15
Screen Center
R G
17.5mm 40.0mm
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.
B:Forcus
B