Convergence Adjustment - Sony Trinitron KV-21FT250 Service Manual

3-2. CONVERGENCE ADJUSTMENT

Before starting convergence adjustments:
1 Perform FOCUS, VLIN and VSIZE adjustments.
2. Set BRIGHTNESS control to minimum.
3. Set Picture mode to STANDARD.
4. Feed in dot pattern.
Vertical Static Convergence
1. Adjust the 4 pole magnet to converge red, green and blue dots in
the center of the screen.
Center dot
R G B
2. Tilt the 4 pole magnet and adjust static convergence to open or
close the 4 pole magnet.
When the 4 pole magnet is moved in the direction of arrow
B
, the red, green, and blue dots move as shown below:
B
B
G
R
A
Moved RV750 (H.STAT)
R G B
KV-21FT250
R
G
B
4 pole magnet
RV750
H. STAT
C Board
A
B
B
G
R
R G B
Horizontal Static Convergence Adjustment
If the blue dot does not converge with the red and green dots, use the 6
pole magnet to adjust as shown:
DY pocket
4 Pole
Magnet
A
and
R G B R G B R
R B
R G B
G
R
6 Pole
Magnet
6 Pole Magnet
Purity
4 Pole Magnet
KV-21FT250
G B
G
B
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