Sony TRINITRON BVM-9045D - Vicinity of Screen

3-4
S MIC Chassis
2 VMC (Vertical Misconvergence) correction and
motion of the electron beam with BMC (6-pole)
magnet:
Fig. 3-11
3-4-2. Horizontal and Vertical Dynamic
Convergence Adjustment in the
Vicinity of Screen
1. When there is misconvergence at the sides of the
screen, adjust the inclination of deflection yoke in
accordance with the following steps.
2. Insert the three DY spacers between the deflection yoke
and picture tube's funnel as shown in Fig. 3-12.
3. Adjust the convergence around the four corners with a
permalloy.
Fig. 3-13
Fig. 3-12
DY spacer
DY spacer
DY spacer
G
G
R
R
B
GBR
B
G
B
R
GRBGBR
GBRGRB
G
G
B
B
R
GRB
R
G
R
B
V.STAT magnet
Purity magnet
BMC (6-pole) magnet
B
G
VMC correction (A)
R
B
G
R
C
D
C
D
VMC correction (B)
C
<
DC
=
D
B
G
R
B
G
R
C
D
C
D
C
=
D
C
>
D
a-d : misconvergence
on four corners
b
a
c
d
Convergence adjustment
with permalloy assembly
a
b
d
c