Samsung KCT52A, Training Manual

Page: 88 / 93

3.3.7 Color Purity Adjustment
1. Warm up the receiver. Operate it for 20 minutes, with the Brightness control set to maximum.
2. Fully degauss the receiver. Use an external degaussing coil.
3. Roughly adjust convergence by rotating the convergence magnet.
4. Input a black and white signal.
5. Loosen the Deflection Yoke clamp screw, and move the Deflection Yoke as close to the purity magnet as possible.
6. Loosen the Purity Magnet clamp. Adjust the purity magnet so that the vertical green raster is precisely at the center of
the screen. Then tighten the clamp.
7. Slowly move the Deflection Yoke forward, and adjust it for the best overall green screen.
8. Tighten the Deflection Yoke clamp screw.
Fig 3.1 Tube Assembly
KCT52A Chassis
l
SAMSUNG GROUP
l
SAMSUNG GROUP
O
[
O
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TOC
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