Convergence - Sony TRINITRON KV-20FS120 Service Manual

2-2. CONVERGENCE

Before starting convergence adjustments:
1 Perform FOCUS, VLIN and VSIZE adjustments.
2. Set BRIGHTNESS control to minimum.
3. Feed in dot pattern.
Vertical Static Convergence
1. Adjust V. STAT magnet to converge red, green and blue dots in the
center of the screen (Vertical movement adjust S V.STAT RV1750 to
converge).
Center dot
RV1750
R
G B
V.STAT
2. Tilt the V. STAT magnet and adjust static convergence to open or
close the V. STAT magnet.
When the V. STAT magnet is moved in the direction of arrow a and b,
red, green, and blue dots move as shown below:
1
a
b
2
a
3
b
KV-20FS120/21FM120/21FS120/21FA310/24FS120/25FS120
R
G
B
V.STAT magnet
a
b
b
B B
G G
R R
a
R G B
b
b
B G R
a
b
a
B
R
G
G
b
R
B
KV-20FS120/21FM120/21FS120/21FA310/24FS120/25FS120
Horizontal Static Convergence
If the blue dot does not converge with the red and green dots, peform
the following:
1. Move BMC magnet (a) to correct insuffi cient H.Static convergence.
2. Rotate BMC magnet (b) to correct insuffi cient V.Static convergence.
3. After adjusting the BMC magnet, repeat Beam Landing Adjustment.
PURITY
b
V.STAT
BMC magnet
a
14