Precautions for Use
14
- ENGLISH
Important
Information
Cautions on use
In order to get the picture quality
Draw curtains or blinds over windows and turn off any lights near the screen to prevent outside light or light
from indoor lamps from shining onto the screen.
Depending on where the projector is used, heated air from an exhaust port or warm or cold air from an air
conditioner can cause a shimmering effect on screen.
Avoid use in locations where exhaust or streams of air from projector, other devices and air conditioners flow
between the projector and the screen.
The lens of projector is affected by the heat from the luminous source. Because of this, the focusing may not
be stable right after the power is turned on. Focusing is stabled after projecting image for 30 minutes and
longer.
Do not touch the surface of the projection window with your bare hand.
If the surface of the projection window becomes dirty from fingerprints or anything else, this will be magnified and
projected onto the screen.
DLP chips
The DLP chips are precision-made. Note that in rare cases, pixels of high precision could be missing or
always lit, but this is not a malfunction.
Directing a high power laser beam onto the projection window surface can damage the DLP chips.
Optical components
Operating the projector in an environment with high temperature or heavy exposure to dust or tobacco smoke will
reduce the service life of the optical components and may necessitate their replacement within less than one year
of use. For details, consult your dealer.
Lamp
The luminous source of the projector is a mercury lamp with high internal pressure.
A high pressure mercury lamp has following characteristics.
The brightness of the lamp will decrease by duration of usage.
The lamp may burst with sound or shorten life by shock or chipping.
The life of the lamp varies greatly depending on individual specificities and usage conditions. In particular,
continuous use over 22 hours and frequent on/off switching of the power greatly deteriorate the lamp and
affect the lamp life.
In rare cases, the lamp burst shortly after the projection.
The risk of bursting increases when the lamp is used beyond its replacement cycle. Make sure to replace the
lamp unit consistently. (“When to replace the lamp unit” (
page 64))
If the lamp bursts, gas contained inside of the lamp is released in a form of smoke.
It is recommended to store replacement lamps for contingency.
It is recommended to have authorized engineer or your dealer replace the lamp unit.
Viewing 3D pictures
Caution for properly viewing 3D pictures:
The optimum 3D viewing distance from the screen is about 3 m or more and your eyes should be level with
the screen.
Viewing 3D images for an extended period of time or viewing them from an oblique angle can cause eye
strain.
Take breaks when viewing 3D images for an extended period of time. As this may cause eye fatigue.
Some image sources can cause pseudoscopic image problem. Check the 3D settings to get the 3D effect.
If the right-eye image and left-eye image are switched, you may not get the 3D effect, resulting in eye strain
or nausea.
There are differences in 3D visual perception between individuals.
If you get double vision or don’t get the 3D effect, discontinue using the projector.
If you experience fatigue or nausea, stop using the projector.
After viewing the rotating, swinging, or jumping 3D images, you may experience 3D motion sickness.
If you experience such symptom, immediately stop viewing the 3D images and take a break until the symptom
