Advertisement
2. Purity Adjustment
Adjustment jig
Color bar generator
Measuring location
TV screen (visual observation)
Input signal
Crosshatch pattern
Red pattern (red single color signal)
Rainbow color pattern
6-pole convergence magnet
4-pole convergence magnet
Board [L]
3. Convergence Adjustment
Adjustment jig
Color bar generator
Measuring location
TV screen (visual observation)
Input signal
Crosshatch pattern
Red pattern (red single color signal)
Rainbow color pattern
Purpose: Adjusting the red, blue, and green electron beams so that they hit
the specified fluorescent substance correctly.
Purity magnet
VRS magnet
Purpose: Adjustment of the image color deviation
Fig. 5
Open
(A)
(B)
1. Receive a crosshatch pattern and perform simple
adjustment of the convergence with the convergence
magnets.
2. Receive a red pattern (red single color signal).
3. Slide the deflection yoke to the rear (towards board [L] and
fix it provisionally when the red vertical bar appears.
4. Adjust the purity magnets so that the red vertical bar
comes to the center of the screen. (Fig. 4)
Fig. 4
Red
5. Loosen the provisionally fixed deflection yoke, move it to
the rear, so that the entire screen becomes red, and fix it
provisionally in that position.
Confirm the single-color condition of the entire screen for
blue and green.
In case of uneven coloring, repeat the adjustments 3.
and 4. for the color with the uneven coloring.
6. Receive a rainbow color bar, and use the TV reception
channel fine adjustment for a black-and-white image.
(Or use color pattern generator chroma signal cut.)
7. Confirm that there is no partial coloring for the entire
screen.
If there is partial coloring, remove the color unevenness by
moving the deflection yoke slightly in forward-backward
direction.
If the color unevenness can not be removed, repeat the
adjustments 1. to 4.
8. Tighten the screws fixing the deflection yoke and return
the TV fine adjustment to the original setting.
1. Receive a crosshatch pattern.
2. Gradually open the knobs of the 4-pole convergence
magnets and match the red and blue vertical lines at the
center of the screen.
Next, rotate the entire 4-pole magnets to match the red and
blue horizontal lines. (Fig. 5)
4-pole convergence magnets
Rotate
B
(B)
Match red and blue
- 17 -
Purity magnet
(A)
R
Advertisement
