Samsung TXJ2766 Service Manual - Page 17

Color Purity Adjustment

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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. Alignment and Adjustments 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. CRT RUBBER WEDGES DEFLECTION YOKE PURITY AND CONVERGENCE MAGNET ASS'Y 30 RUBBER WEDGE 30 2 POLE PURITY GRASS CLOTH TAPE 31 mm (1-3/16") DEFLECTION 30 YOKE RUBBER WEDGES LOCATION Fig. 3-1 Tube Assembly ADHESIVE RUBBER WEDGES KIT ADJUST THE ANGLE (VERTICAL LINES) FIXED YOKE CLAMP SCREW 6 POLE CONVERGENCE 4 POLE CONVERGENCE Fig. 3-2 Purity and Convergence Magnets Samsung Electronics ROTATE TWO TABS AT THE SAME TIME (HORIZONTAL LINES) 3-7

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Alignment and Adjustments
Samsung Electronics
3-7
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
RUBBER WEDGES
30
30
LOCATION
DEFLECTION
YOKE
30
RUBBER WEDGE
ADHESIVE
RUBBER
WEDGES
KIT
RUBBER
WEDGES
PURITY AND
CONVERGENCE
MAGNET ASS'Y
CRT
DEFLECTION
YOKE
TAPE
CLOTH
GRASS
(1-3/16")
31 mm
Fig. 3-2
Purity and Convergence Magnets
2 POLE
PURITY
YOKE
CLAMP
SCREW
6 POLE
CONVERGENCE
4 POLE
CONVERGENCE
ADJUST THE ANGLE
(VERTICAL LINES)
FIXED
ROTATE TWO TABS
AT THE SAME TIME
(HORIZONTAL LINES)