NEC PH3501QL User Manual page 46

CAUTION
Adjustment of the projector's settings (Level adjusters)
The projector must be placed square to the screen otherwise keystone distortion may appear on the screen. For
setting the projector perpendicular to the screen when viewed from the side, utilizing the level adjusters equipped at
each corner of the projector bottom. Maximum Adjustable length of the level adjuster is 10 mm/0.39".
Example for adjustment
NOTE:
• Do not lengthen each of the level adjusters any more than 10 mm/0.39". The force of doing so may cause the level adjuster to
come off, resulting in damage to the projector.
• Pay attention to lengthen or shorten two level adjusters at front at the same time. Same for the rear adjusters, otherwise, the
weight of the projector is loaded on one level adjuster and it may cause of damage to it.
• Perform the adjustment from behind or from the side of the projector. Adjusting from
the front could expose your eyes to strong light which could injure them.
• Keep hands away from the lens mounting portion while the lens shift is in operation.
Failure to do so could result in hands being pinched by the moving lens.
Raise
2. Projecting an Image (Basic Operation)
Level adjuster
Lower
Raise
29
Lower