Replacing The Lens - Mitsubishi UL7400U User Manual

Replacing the lens

You can replace the lens on this projector. The lens
can be replaced with the separately sold option lens
according to the usage environment of the projector.
For details of the specification of the option lens,
contact your local dealer.
• Before you replace the lens, be sure to turn off the
projector and unplug the power cord from the wall
outlet.
• Before you replace the lens, be sure to reset the
lens position to the center (the factory default
position).
When the lens position is moved from the center,
reset to the center position (the factory default
position) using the lens shift reset (see page 33).
The lens replacement may fail when the lens
position is moved from the center.
• The projector and lens are composed of precision
parts. Do not subject them to shock or excessive
force.
• During replacement, do not touch the lens surface
with your hands.
• Take sufficient care not to attach any dirt or oil
on the lens surface, and not to scratch the lens
surface.
• Do not replace the lens in a dusty place. Dirt or
dust entering the projector causes a degradation of
an image quality.
• Do not leave the lens removed from the projector
for a long period of time. Dirt or dust entering the
projector causes a degradation of an image quality.
• Do not touch the signal contact of the lens with
your finger. When dirt or dust adheres, it may cause
a contact failure.
Removing the lens
1. Remove the lens ring by turning it counterclockwise
slightly.
2. Turn the lens counterclockwise until it stops while
pressing the lens release button on the top of the
cabinet as far as it will go, and then remove the
lens by pulling it out slowly.
• Do not drop the lens when removing it.
Lens release button
Lens ring
Lens
EN-57
Mounting the lens (option lens)
1. Remove the lens protective cap from the lens.
Protective cap
• Don't attach the protective cap to the lens after
mounting the lens to the projector.
2. Insert the lens slowly as far as it will go with the red
mark on the lens pointed upward in the center.
3. Turn the lens clockwise slowly until you hear it
click.
• Do not press the lens release button when
mounting the lens.
• After you mount the lens, turn it counterclockwise
and check that it isn't removed.
4. Insert the lens ring with the part A pointed up and
then turn it clockwise.
Important:
• Do not transport the projector with the option lens
mounted. The projector may be damaged.
• With the option lens mounted, the brightness,
resolution, and color uniformity in the projected
image may differ from those with the standard lens.
• With the option lens mounted, the adjustable angle
in the keystone adjustment differs from that with
the standard lens.
• In the keystone adjustment with the option lens
mounted, the proper aspect ratio may not be
obtained.
• When the option lens is mounted, projected images
may become distorted, have decreased resolution,
or have shadows at their corners if the projection
screen is set close to the top or bottom edge or
right or left edge of the effective projection area.
Lens
Red mark
Part A
Lens ring