XOCECO TS2019, Service Manual

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8. Check the purity of the red and blue raster.
9. Obtain a white raster, referring to “CRT WHITE BALANCE ADJUSTMENT”.
10. Proceed with convergence adjustment.
FIG.3
CONVERGENCE ADJUSTMENT
NOTE: Before attempting any convergence adjustments, the receiver should be operated for at least fifteen
minutes.
CENTER CONVERGENCE ADJUSTMENT
1. Receive crosshatch pattern with a color bar signal generator.
2. Adjust the BRIGHTNESS and CONTRAST controls for well defined pattern.
3. Adjust two tabs of the 4-Pole Magnets to change the angle between them (see figure 4) and superimpose red
and blue vertical lines in the center area of the picture screen. (see figure 5)
4. Turn the both tabs at the same time keeping the constant angle to superimpose red and blue horizontal lines
at the center of the screen.(see figure 5)
5. Adjust two tabs of 6-Pole Magnets to superimpose red/blue line with green one. Adjusting the angle affects
the vertical lines and rotating both magnets affects the horizontal lines.
6. Repeat adjustments 3,4,5, keeping in mind red, green and blue movement, because 4-Pole Magnets and
6-Pole Magnets interact and make dot movement complex.
CIRCUMFERENCE CONVERGENCE ADJUSTMENT
1. Loosen the clamping screw of deflection yoke to allow the yoke to tilt.
2. Put a wedge as shown in figure 1 temporarily. (Do not remove cover paper on adhesive part of the wedge.)
3.Tilt front of the deflection yoke up or down to obtain better convergence in circumference. (See figure 5).
Push the mounted wedge into the space between the picture tube and the yoke to hold the yoke temporarily.
4. Put other wedge into bottom space and remove cover paper to stick.
5. Tilt front of the yoke right or left to obtain better convergence in circumference (see figure 5)