Mitsubishi Electric DLP PH50 series Manual page 34

1.4.3.3. Mirror adjustment
1.4.3.3.1. Parallelogram distortion correction
When a parallelogram distortion cannot be corrected with the 6-axis adjuster, correct it according
to the following procedure.
1. Allign top, bottom and right lines of the crosshatch pattern
with the screen edge by the 6-axis adjustment.
2. R R e e a a r r : Loosen screws in the rear panel and upper
door. And then open the upper door and lift the rear
panel to remove.
F r o n t : Open the screen unit (chapter 1.2.7.1, on
F r o n t
page 21).
P P H H 5 5 0 0 R R e e a a r r : Pull 3 latches on the bottom edge of the
rear panel to release. It is no necessary to loosen 3
screws on the top edge. Lift the panel to remove.
Note: Make sure that the latches are released before
reattaching the panel. The panel cannot be attached with
latches locked. For reattaching, attach the panel and push
the latches till click to lock.
PH50, XL50, XL21 series Set-up and Installation Manual
34
Parallelogram distortion
Upper door
Rear panel
Latches
Latch
Release Lock