Sharp 14VT10X1, Service Manual

Page: 45 / 138

CONVERGENCE ADJUSTMENT
Note:
l During the adjustment, keep the unit facing the
east.
Convergence adjustment
This adjustment should be performed after the
purity magnet adjustment.
2 .
Receive crosshatch pattern signal with pattern
generator.
Set the Brightness control at CENTER position.
Set the Contrast control at MAX position.
I - p o l e
CRT neck
Lacquer
3 .
4 .
Static Convergence
Adjust the opening degree of the magnet
and rotate the magnet to converge red and blue
lines.
Adjust the opening degree of the magnet
and rotate the magnet to converge red, blue and
green lines.
Dynamic convergence
Dynamic convergence (convergence of the three
fields) at the edges of CRT screen is
accomplished in the following manner.
l Convergence in Fig. 3-7.:
wedge (a) between the deflection yoke
and CRT, and tilt the deflection yoke upward
until the mis-convergence shown in Fig. 3-7. is
corrected.
I
Figure 3-7.
Convergence in Fig. 3-8.:
Insert wedges and between the deflection
yoke and CRT, and tilt the deflection yoke
downward until the mis-convergence shown in
Fig. 3-9. is corrected.
I
I
Figure
Convergence in Fig.
Insert wedge deeply between the deflection
yoke and CRT, and tilt the deflection yoke to
right until the mis-convergence shown in Fig.
9. is corrected.
Figure 3-9.
Convergence in Fig. 3-l 0:
Insert wedge
deeply between the deflection
yoke and CRT, and tilt the deflection yoke to left
until the mis-convergence shown in Fig. is
corrected.
Figure
6. Stick the three wedges onto the CRT, and apply
glass tapes thereon.
7. Apply lacquer to the deflection yoke screw,
magnet unit (made of purity, and
magnets) and magnet unit screw.
After the adjustment, receive either the Red or the
Blue signal and check that there is no mixture with
the other signal.
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