Panasonic PT-40LC12 Service Manual page 36

4) Loosen Screws "a" and "b."
left
Screw "a"
Washer
Fig. 4-5
5) Adjust the Projection Unit to the left or the right so that
both width on the left ("A") and on the right ("B") become
same. Then, the top and bottom marks are centered as
shown.
Note:
If the Projection Unit is moved left, the Focus Screen moves
right.
If the Projection Unit is moved right, the Focus Screen
moves left.
right
Screw "b"
Washer
top edge
of screen
"A"
left edge
of screen
F O C U S
left
<screen>
center line
left edge of
center line
bottom mark
6) Tighten screws "a" and "b" to fix the Projection Unit after
adjustment.
top mark
right edge of
center line
center line
right
right edge
of screen
"B"
bottom edge
of screen
Fig. 4-6