JVC AV-20NX3 Service Manual page 36

AV-20NX3
CONVERGENCE ADJUSTMENTS
STATIC CONVERGENCE ADJUSTMENT
1. Input a crosshatch signal.
2. Using 4-pole convergence magnets, overlap the red and blue lines in
the centre of the screen (Fig. 4) and turn them to magenta (red/blue).
3. Using 6-pole convergence magnets, overlap the magenta(red/blue)
and green lines in the centre 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. 5)
2. Move the deflection yoke left to right and overlap the lines in the
periphery. (Fig. 6)
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 P/C magnets with glue.
36
(FRONT VIEW)
(FRONT VIEW)
RED
RED
GREEN
BLUE
BLUE
(FRONT VIEW)
GREEN
RED
BLUE
No. 52079
Fig. 4
GREEN BLUE
RED
GREEN
BLUE
RED
GREEN
Fig. 5
GREEN
RED
BLUE
RED
GREEN
BLUE
BLUE
GREEN
RED
Fig. 6