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This is the original manufacturers service manual, with detailed info on the circit boards, explosion drawings of all parts in assembly order, and tuning instructions. The only thing missing is the information on the dimensions of the various drive belts. mail me if you need them. gcrossman_at_aol.com
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Ordered service manuel for a hard to find plasma tv - your company made it easy to find and purchase - I will use you again
Thanks for your help
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This is a high quality manual with clear schematic and components layout diagrams ; with service procedure included.
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This service manual for the Kenwood KT-990D was reproduced really well ,is very legible and manual is complete.Combined with the low price paid,in the future,I will be checking Owner-Manuals.com any time I need a manual.
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When I purchased this manual I had my doubts regarding the quality as the price was so reasonable as compared to other outlets.
The manual itself is of high standard the print is very clear as are the diagrams. Obviously with the diagrams one has to zoom in otherwise it is to small to be able to read.
Overall I am very pleased with the company who delivered as they said and with the manual they supplied.
I occasionally require a manual and now having registered with this company I shall order from them in the future.
CONVERGENCE ADJUSTMENTS NOTE: Before attempting any convergence adjustments, the receiver should be operated for at least fifteen minutes. s CENTER CONVERGENCE ADJUSTMENT 1. Use the cross-dot pattern from among the built-in test signals. 2. Set the brightness and contrast for well defined pattern. 3. Adjust two tabs of the 4-Pole Magnets to change the angle between them (See figure 2.) and superimpose red and blue vertical lines in the center area of the picture screen. 4. Turn the both tabs at the same time keeping the angle constant to superimpose red and blue horizontal lines at the center of the screen. 5. Adjust two tabs of 6-Pole Magnets to superimpose red/ blue line and 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 have mutual interaction and make dot movement complex.
6-POLE MAGNETS 4-POLE MAGNETS
s CIRCUMFERENCE CONVERGENCE ADJUSTMENT 1. Loosen the clamping screw of deflection yoke slightly to allow the yoke to tilt. 2. Temporarily put a wedge as shown in figure 1. (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 3.) Push the mounted wedge into the space between picture tube and the yoke to fix the yoke temporarily. 4. Put other wedge into bottom space and remove the cover paper to stick. 5. Tilt front of the yoke right or left to obtain better convergence in circumference. (See figure 3.) 6. Keep the yoke position and put another wedge in either upper space. Remove cover paper and stick the wedge on picture tube to fix the yoke. 7. Detach the temporarily mounted wedge and put it in another upper space. Stick it on picture tube to fix the yoke. 8. After fixing three wedges, recheck overall convergence. Tighten the screw firmly to fix the yoke and check the yoke is firm. 9. Stick three adhesive tapes on wedges as shown in figure 1.
ROTATE TWO TABS AT THE SAME TIME (HORIZONTAL LINES) PURITY MAGNETS CONVERGENCE MAGNET ASSEMBLY ADJUSTMENT OF MAGNETS
Figure 2.
BLU RED RED/BLU GRN
BLU RED
RED/BLU GRN
4-POLE MAGNETS MOVEMENT
6-POLE MAGNETS MOVEMENT
Center Convergence by Convergence Magnets
BGR R G B RGB INCLINE THE YOKE UP (OR DOWN) B G R
B G R
RGB
BGR
R G B
INCLINE THE YOKE RIGHT (OR LEFT)
Circumference Convergence by DEF Yoke
Figure 3. Dot Movement Pattern
�5�
SPECIFIC INFORMATIONS GENERAL ADJUSTMENTS
ADJUST THE ANGLE (VERTICAL LINES)
FIXED
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