Convergence - Sony Trinitron KV-21V4A Service Manual

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3-2. CONVERGENCE

Preparation:
Before starting, perform FOCUS, H.SIZE, and V.SIZE
adjustments.
Set the BRIGHTNESS control to minimum.
Input a dot pattern from the pattern generator.
(1) Horizontal and Vertical Static Convergence
Center dot
1. Adjust the V.STAT magnet to converge the Red, Green and
Blue dots at the center of the screen. (Vertical and Horizontal
movement)
Tilt the V.STAT magnet and adjust the static convergence
by opening or closing the V.STAT magnet.
V. STAT magnet
C Board
– 27 –
2. When the V.STAT magnet is moved in the direction of
the
a
and
b
arrows, the Red, Green and Blue
dots move as shown below.
a
b
b
3. Adjust the H.STAT VR on "C" board to converge the Red,
Green and Blue dot at the Center of the screen (Horizonal
movement).
If the Red and Blue dots do not converge with the Green
dots, perform the following steps.
1. Move the BMC magnet (a) to correct for insufficient
H.static convergence.
2. Rotate the BMC magnet (b) to correct for insufficient
V.static convergence.
In either case, repeat the Beam Landing Adjustment.
a
b
a
b
B
B
G
G
R
R
BMC magnet

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