Sony Trinitron RM-862, Service Manual, Page: 22 / 66

KV-25X3
— 22 —
Y-splitting axis correction magnet
3
By rotating the V.STAT magnet clockwise, the red, green
and blue dots move as shown below.
4
By opening or closing the V.STAT magnet, the red, green and
blue dots move as shown below.
2
VMC correction by BMC (Hexapole) magnet and movement
of the electronic beam.
• If the blue dot does not coincide with the red and green points,
correct the points by using the BMC (Hexapole) magnet.
5
Correction for HMC (horizontal mis-convergence) and VMC
(vertical mis-convergence) by using the BMC (Hexapole)
magnet.
1
HMC correction by BMC (Hexapole) magnet and movement
of the electronic beam.
Layout of each control
Purity magnet
BMC (Hexapole) magnet
V.STAT convergence magnet
5. If you are unable to adjust the corner convergence properly,
correct them with the use of permalloys.
a—d: angoli dello
schermo non in
convergenza.
a
b
c
d
a-d: screen-corner
convergence defect
b
Permalloy Assy
X-4387-214-1
Convergence adjustment with permalloy
H M C c o r r e c t i o n ( A ) H M C c o r r e c t i o n ( B )
A < B
A = B
R G B
R G B
A > B
A = B
R G B
R G B
B G R
B
G
R B
G
R
C < D C = D C > D C = D
R
G
B
C
D
C
D
R
G
B
R
G
B
R
G
B
V M C c o r r e c t i o n ( A ) V M C c o r r e c t i o n ( B )
Fig.3-6
c
d
a