Sony KV-25K1A Service Manual page 22

KV-25K1
3By rotating the V.STAT magnet clockwise, the red, green
and blue dots move as shown below.
4By opening or closing the V.STAT magnet, the red, green and
blue dots move as shown below.
R
• If the blue dot does not coincide with the red and green points,
correct the points by using the BMC (Hexapole) magnet.
5Correction for HMC (horizontal mis-convergence) and VMC
(vertical mis-convergence) by using the BMC (Hexapole)
magnet.
1HMC correction by BMC (Hexapole) magnet and movement
of the electronic beam.
HMC correction(A)
A < B R G B
A = B
R G B
2VMC correction by BMC (Hexapole) magnet and movement
of the electronic beam.
V M C c o r r e c t i o n ( A )
C < D
C = D
R
R
C
C
G
G
D
D
B
B
B G R
B
G
G
B R
HMC correction(B)
A > B R G B
A = B
R G B
V M C c o r r e c t i o n ( B )
C > D C = D
R R
G
G
B
B
Layout of each control
2. If you are unable to adjust the corner convergence properly,
correct them with the use of permalloys.
a
a-d: screen-corner
convergence defect
c
c
b
Permalloy Assy
X-4387-214-1
d
Convergence adjustment with permalloy
— 22 —
Purity magnet
BMC (Hexapole) magnet
V.STAT convergence magnet
Y-splitting axis correction magnet
Fig.3-5
b
a—d: angoli dello
schermo non in
convergenza.
d
d
a
c