Convergence Adjustment - Sanyo PLC-XF20 Service Manual

For convergence adjustment, use Green as the reference standard. Align Red and Blue with Green by
adjusting the position and angle of the Red and Blue LCD panels. Screws A, B and C (Fig.1) are for con-
vergence adjustment.
[Before adjustment]
- Make sure each Red, Green and Blue LCD panel unit has been correctly installed, and that all focus adjustments have been
completed before performing convergence adjustments.
-
Image Movement and Screw Turning
1. Adjustment screw "A" turns the image .
2. Adjustment screw "B" moves the image right and left.
3. Adjustment screw "C" moves the image up and down.
(Fig.1)
Red or
Bule
Green
/1674

Convergence adjustment

FIG.2
FIG.3
FIG.4
Red (or Blue) Panel convergence Adjustment
1. Project yellow (or cyan) grid pattern. (in service mode)
2. Loosen the 2 screws " D " (Fig. 1 ) using the allen
wrench.
3. Turn the lines of convergence to be parallel to Green grid
pattern by adjusting screw "A". FIG.2
4. Move the lines of convergence horizontally to be
matched with Green grid pattern by adjusting screw " B ".
FIG.3
5. Adjust the lines to be completely matched with Green
grid pattern by taking step 3 and 4.
6. Move the lines of convergence vertically to be matched
with Green grid pattern by adjusting screw " C ". FIG.4
7. Adjust the lines to be completely matched with Green
grid pattern by taking step 3 and 6.
8. Tighten the 2 screws " D " (previously loosened in step 2
above) with the allen wrench.
9.After tightening the screws, check convergence. If not
aligned, repeat steps 2 through 8 above.
-40-
Fig.-1