Convergence Adjustment - Sanyo PLC-XF45 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 panel. Screws A,B and C(Fig.1) are for con-
vergence adjustment. When adjusting the Green reference LCD panel, both on Red and Blue LCD panel
should be adjusted with Green LCD panel.
[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 preforming convergence
adjustments.
Caution
To block the light, do not insert the object into the optical
block, otherwise, optical parts may be damaged.
Line Movement and Screw Turning
1. Adjustment screw "A" to turns the line.
2. Adjustment screw "B" to moves the line right and left.
3. Adjustment screw "C" to moves the line up and down.
(Fig.1)
Screw A
Red or
Blue
GREEN
Fig.2
Screw B
Fig.3
Screw C
Fig.4

Convergence adjustment

Red (or Blue) Panel convergence adjustment
1. Display Red (or Blue) and Green color crosshatch pattern
by setting with service mode.
(See page 42 for setting service mode.)
2. Turn the Red lines to be paralleled with Green lines by
adjusting screw-A.
3. Adjust screw-B to converge Red and Green vertical lines.
4. Repeat steps 2 and 3 until Red and Green vertical lines
converged properly.
5. Adjust screw-C and converge Red and Green horizontal
lines properly.
6. Repeat step 2,3 and 5 until Red and Green lines con
verged properly.
7. Tighten screws-D.
8. Remove Adjustment Tool from Prism Assy.
Note;
If Red and Blue lines do not converge with green
lines, loosen screws-D of Green reference panel
and adjust Green panel slightly.
Note;
When removing an Adjustment Tool after adjustment,
loosen screws-B of Adjustment Tool first, otherwise
adjustment may be changed.
-57-
B
A
C
D
LCD panel
unit
(Prism/LCD Panel
assembly)
Fig.1