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VM99S
Display image : Crosshatch pattern
Warm-up Time : 30 minutes
PROCEDURE
1. Set Brightness and Contrast to display a well-defined pattern.
2. Ensure the convergence magnet rings are correctly positioned on the CRT.
Figure 4-1. Convergence Magnets on the CRT
+
8 7 6 5 4
3
2
10
1
11
CRT
FRONT
P
9
1) Setup Bolt
2) Bow Magnet
3) Band
4) 4-Pole Magnet
5) Spacer
7) Spacer
9) Holder
6) 6-Pole Magnet
8) 2-Pole Magnet
11) Tabs
10) Band
3. Rotate the individual rings of 4-pole convergence magnets by changing the spacing between the 2 tabs to
converge the vertical red and blue lines at the center of the screen.
4. Rotate the pair of rings of 4-pole convergence magnets by maintaining spacing between the 2 tabs to
converge the horizontal red and blue lines at the center of the screen.
5. Rotate the individual rings of 6-pole convergence magnets by changing the spacing between the 2 tabs to
converge the vertical red, blue and green lines.
6. Rotate the pair of rings of 6-pole convergence magnets by maintaining spacing between the 2 tabs to
converge the horizontal red, blue and green lines.
7. Repeat the steps from 3~6 until the best convergence is obtained.
Figure 4-2. 4-pole and 6-pole Magnets Movement
Note :
The 4-pole magnets and the 6-pole magnets interact, making dot movement complex.
Blue Red
Blue
Red
Red/
Blue Green
Red/
Blue
Green
4-pole magnets
movement
6-pole magnets
movement
