Convergence Adjustment - Sharp 21N52-E1 Service Manual

N o t e : D u r i n g t h e a d j u s t m e n t , k e e p t h e u n i t f a c i n g t h e e a s t .

CONVERGENCE ADJUSTMENT

Wedge "a"
Purity magnet
l
. . . . . . .
. . . . . . . . . . . . . ...*.....
I .
:
CONVERGENCE ADJUSTMENT
/ W e d g e "c"
\ :
\ :
\ :
\ :
. - c d - *- R
*..._ L-L
G
B
: \
, G
. . . . . . . . . . . . . . . . ..-....-. .,..
I
I
I
.
I
.
Figured.
This adjustment should be performed
after the purity magnet adjustment.
Receive "CROSSHATCH PATTERN" signal.
at MAX position.
STATIC CONVERGENCE
magnet and rotate the magnet to converge
red and blue lines.
magnet and rotate the magnet to converge
red, blue and green lines.
DYNAMIC CONVERGENCE
three colour fields) at the edges of CRT screen
is accomplished in the following manner.
Convergence in Fig. a:
insert wedge"a" between the deflection yoke
and CRT, and tilt the deflection yoke upward
until the mis-convergence
corrected.
Convergence in Fig. b:
Insert wedges "b" and "c" between the
d e f l e c t i o n y o k e a n d CRT, a n d t i l t t h e
shown in Fig. b is corrected.
Convergence in Fig. c:
Insert wedge "c" deeply between the
deflection yoke and CRT, and tilt the
deflection yoke to right until the mis-
convergence shown in Fig. c is corrected.
Convergence in Fig. d:
Insert wedge "b" deeply between the
deflection yoke and CRT, and tilt the
d e f l e c t i o n y o k e t o l e f t u n t i l t h e mis-
convergence shown in Fig. d is corrected.
apply glass tapes thereon.
magnet unit (made of purity, 4-pole and 6-
pole magnets) and magnet unit screw.
After the adjustment, receive either the Red or
the Blue signal and check that there is no
with the other colour signal.
shown in Fig. a
is
mixture