Sampo SME-27FDL5, Service Manual

Page: 12 / 95

FACTORY & ELECTRONIC ADJUSTMENT VER 1.0
3
-3
2.
Xv misconvergence adjustment:
Adjust the Xv coil (on the deflection yoke) to correct misconvergence at both sides on screen. (See
the figure below.)
Use a hexagonal tip stick (plastic) to adjust the core of coil.
3. Center convergence adjustment
1)
Receive crosshatch pattern from a color
bar/pattern 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
3.) and superimpose red and blue vertical
lines in the center area of the picture
screen.(See figure 4.)
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 4)
5)
Adjust tow 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.
R B
B R
B R
R B
Xv Cross Pattern View
Clockwise Counterclockwise
Center Convergence by Convergence Magnets
Figure 4.
BLUE RED
BLUE
RED
4-POLE MAGNETS
MOVEMENT
RED/BLUE GRN
RED/BLUE
GRN
6-POLE MAGNETS
MOVEMENT
ADJUST THE ANGLE
(VERTICAL LINES)
ROTATE TWO TABS
AT THE SAME TIME
(HORIZONTAL LINES)
FIXED
ADJUSTMENT OF MAGNETS
Figure 3.