JVC AV-21L41/BK Service Manual page 26

STATIC CONVERGENCE ADJUSTMENT
1. Input a crosshatch signal.
2. Using 4-pole convergence magnets, overlap the red and blue
lines in the center of the screen (Fig.1) and turn them to
magenta (red/blue).
3. Using 6-pole convergence magnets, overlap the magenta
(red/blue) and green lines in the center of the screen and turn
them to white.
4. Repeat 2 and 3 above, and make best convergence.
After adjustment, fix the wedge at the original position.
Fasten the retainer screw of the deflection yoke.
Fix the 6 magnets with glue.
DYNAMIC (periphery) CONVERGENCE
ADJUSTMENT
*
After adjusting purity & static convergence.
1. Move the deflection yoke up and down and overlap the lines in
the periphery. (Fig.2)
2. Move the deflection yoke left to right and overlap the lines in the
periphery. (Fig.3)
3. Repeat the steps 1 and 2 and obtain an optimum convergence.
After adjustment, fix the wedge at the original position.
Fasten the retainer screw of the deflection yoke.
Fix the 6 magnets with glue.
(FRONT VIEW)
(FRONT VIEW)
BLUE
GREEN
RED
BLUE
(FRONT VIEW)
GREEN
RED BLUE
Yv
No. 51859
Fig.1
YH
GREEN
RED BLUE
RED
GREEN
BLUE
GREEN
RED
YH
Fig.2
GREEN
BLUE RED
Yv
Fig.3
AV-21L41
RED
GREEN
BLUE
BLUE
GREEN
RED
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