JVC AV-20420/SA Service Manual page 28

AV-20420
AV-20421
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.
DYNAMIC CONVERGENCE ADJUSTMENT
(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 1 and 2 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.
1-28 (No.52111)
(FRONT VIEW)
Fig.1
(FRONT VIEW)
RED
GREEN
BLUE
GREEN
RED
BLUE GREEN
Fig.2
(FRONT VIEW)
GREEN
RED BLUE
Fig.3
BLUE
RED
GREEN
BLUE
RED
GREEN
BLUE RED
RED
GREEN
BLUE
BLUE
GREEN
RED