Mitsubishi Electronics WL7200U Manuel D’Utilisation

Page de 68
EN-57
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.
Lens ring
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
Mounting the lens (option lens)
1.  Remove the lens protective cap from the lens.
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.
                 
Red mark
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.  Mount the lens ring by turning it clockwise.
                 
Lens ring
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.
Replacing the lens