CONVERGENCE ADJUSTMENTS CIRCUMFERENCE CONVERGENCE ADJUSTMENT
NOTE: Before attempting any convergence adjustments, the1. Loosen the clamping screw of deflection yoke slightly to
receiver should be operated for at least fifteen min-allow the yoke to tilt.
utes.2. Temporarily put a wedge as shown in figure 1. (Do not
remove cover paper on adhesive part of the wedge.)
CENTER CONVERGENCE ADJUSTMENT3. Tilt front of the deflection yoke up or down to obtain better
1. Use the cross-dot pattern from among the built-in test sig-convergence in circumference. (See figure 3.) Push the
nals.mounted wedge into the space between picture tube and
2. Set the brightness and contrast for well defined pattern.the yoke to fix the yoke temporarily.
3. Adjust two tabs of the 4-Pole Magnets to change the an-4. Put other wedge into bottom space and remove the cover
gle between them (See figure 2.) and superimpose redpaper to stick.
and blue vertical lines in the center area of the picture5. Tilt front of the yoke right or left to obtain better conver-
screen.gence in circumference. (See figure 3.)
4. Turn the both tabs at the same time keeping the angle6. Keep the yoke position and put another wedge in either
constant to superimpose red and blue horizontal lines atupper space. Remove cover paper and stick the wedge
the center of the screen.on picture tube to fix the yoke.
GENERAL ADJUSTMENTS
5. Adjust two tabs of 6-Pole Magnets to superimpose red/7. Detach the temporarily mounted wedge and put it in an-
blue line and green one. Adjusting the angle affects theother upper space. Stick it on picture tube to fix the yoke.
vertical lines and rotating both magnets affects the hori-8. After fixing three wedges, recheck overall convergence.
zontal lines.Tighten the screw firmly to fix the yoke and check the yoke
6. Repeat adjustments 3, 4, 5 keeping in mind red, greenis firm.
and blue movement, because 4-Pole Magnets and 6-Pole9. Stick three adhesive tapes on wedges as shown in figure
Magnets have mutual interaction and make dot movement1.
complex.
6-POLE
MAGNETS
4-POLEADJUST THE ANGLE
FIXED
MAGNETS(VERTICAL LINES)
SPECIFIC INFORMATIONS
ROTATE TWO TABS
AT THE SAME TIME
(HORIZONTAL LINES)
PURITY
MAGNETS
CONVERGENCE MAGNET ASSEMBLYADJUSTMENT OF MAGNETS
Figure 2.
BLU REDRED/BLU GRN
BLURED/BLU
REDGRN
4-POLE MAGNETS MOVEMENT6-POLE MAGNETS MOVEMENT
Center Convergence by Convergence Magnets
BGR
B
G
RRGB
RB
GG
BR
BGR
R
G
B
RGB
INCLINE THE YOKE UP (OR DOWN)INCLINE THE YOKE RIGHT (OR LEFT)
Circumference Convergence by DEF Yoke
Figure 3. Dot Movement Pattern
� 5 � |
ACEC
