AV-21L31
AV-25L31
CONVERGENCE ADJUSTMENTS [AV-25L31/ME]
STATIC CONVERGENCE ADJUSTMENT
1. Input a crosshatch signal.
(FRONT VIEW)
2. Using 4-pole convergence magnets, overlap the red and blue lines in
the centre of the screen (Fig. 7) 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.
Fig. 7
4. Repeat 2 and 3 above, and make best convergence.
(FRONT VIEW)
TOP
DYNAMIC CONVERGENCE ADJUSTMENT
1. Move the deflection yoke up and down to adjust the pin cushion dis-
tortion in the screen top and bottom. (Fig. 8)
BOTTOM
2. Move the deflection yoke left to right to overlap the lines in the pe-
Fig. 8
riphery, and match the Yv. (Fig. 9)
(FRONT VIEW)
3. Using the VR on the deflection yoke, match the YH (CROSS). (Fig. 10
GREENGREEN
and 12)REDBLUEYVREDBLUE
RED
GREEN
4. Repeat the steps 1 and 3 and obtain an optimum convergence.
BLUE
5. Differential coil ADJUSTMENT.
In case where the horizontal lines of red and blue around the centre
of both sides of the picture as shown in Fig. 11, adjust the XV differ-
BLUE
ence by using the differential coil on the top of the deflection yoke
GREEN
(Fig. 12) so as to minimize the XV difference.
RED
YV
YAfter adjustment, fix the wedge at the original position.
Fig. 9
Fasten the retainer screw of the deflection yoke.
Fix the P/C magnets with glue.(FRONT VIEW)YH
REDGREENBLUE
REDRED
VR
GREENGREEN
BLUEBLUE
FRONT
BLUE GREENRED
XV coilYH
Fig. 10
Fig. 12(FRONT VIEW)
XvGREEN
Fig. 11
32No. 51908 |
ACEC
