JVC AV28R100EKS Service Manual page 64

AV-29RF6
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 to adjust the pin cushion
distortion in the screen top and bottom. (See Fig. 2)
2. Move the deflection yoke left to right to overlap the lines in the
periphery, and match the Yv.(See Fig. 4)
3. Using the VR1 on the deflection yoke, match the Y
4. Using the VR2 on the deflection yoke, match the Y
5. Repeat the steps 1 and 4 and obtain an optimum convergence.
6. Differential coil ADJUSTMENT.
In case where the horizontal lines of red and blue around the
center of both sides of the picture as shown in Fig. 5, adjust the
X difference by using the differential coil on the top of the
V
deflection yoke (Fig. 6) so as to minimize the X
VR2
X
V coil
FRONT
32
(CROSS).
H
(See Fig. 3 and 6)
(BOW).
H
(See Fig. 3 and 6)
difference.
V
VR1
Fig. 6
No.51754
(FRONT VIEW)
Fig. 1
(FRONT VIEW)
TOP
BOTTOM
Fig. 2
(FRONT VIEW)
YH
RED GREEN
BLUE
GREEN
RED
GREEN
BLUE
YH
Fig. 3
(FRONT VIEW)
GREEN
YV
RED BLUE
YV
Fig. 4
(FRONT VIEW)
BLUE(RED)
X
v
RED(BLUE)
Fig. 5
BLUE
RED
GREEN
BLUE
RED
GREEN
BLUE RED
RED
GREEN
BLUE
BLUE
GREEN
RED
GREEN