Chapter 1
Preparation — Precautions for use
ENGLISH - 19
Cautions on use
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To get a good picture quality
In order to view a beautiful image in higher contrast, prepare an appropriate environment. 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.
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Do not touch the surface of the projection lens with your bare hands.
If the surface of the projection lens becomes dirty from fingerprints or anything else, this will be magnified and projected onto
the screen.
Attach the supplied lens cover to the projection lens of the projector or an optional projection lens when you do not use the
projector.
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DLP chips
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The DLP chips are precision-made. Note that in rare cases, pixels of high precision could be missing or always lit. Note that
such phenomena do not indicate malfunction.
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Directing a high-power laser beam onto the projection lens surface can damage the DLP chips.
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Do not move the projector or subject it to vibration or impact while it is operating.
Doing so may shorten the life of the built-in motor.
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Lamp
The light source of the projector is a high-pressure mercury lamp.
A high-pressure mercury lamp has the following characteristics.
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The luminance of the lamp will decrease by duration of usage.
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The lamp may burst with a loud sound or have its service life shortened because of shock, chipping, or degradation due to
cumulative runtime.
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The lamp life varies greatly depending on individual differences and usage conditions. In particular, frequent on/off switching
of the power greatly deteriorate the lamp and affects the lamp life.
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Continuous use for over one week will deteriorate the lamp. The degradation of the lamp due to continuous use can be
reduced by using the [PROJECTOR SETUP] menu
→
[LAMP RELAY].
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In rare cases, the lamps burst shortly after projection starts.
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The risk of bursting increases when the lamp is used beyond its replacement cycle. Make sure to replace the lamp unit
regularly.
(“When to replace the lamp unit” (
x
page 161), “How to replace the lamp unit” (
x
page 162))
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If the lamp bursts, gas contained inside of the lamp is released in the form of smoke.
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It is recommended that you store the Replacement lamp unit as a contingency.
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Computer and external device connections
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When connecting a computer or an external device, read this manual carefully regarding the use of power cords and
shielded cables as well.
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To assure continued performance and FCC compliance,use only high quality DVI-D interface cable with two ferrite cores for
connecting with the <DVI-D IN> terminal.
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Viewing 3D images
The projector can display 3D video signals that are input through various systems such as “frame packing” and “side by
side.” In addition, the projector corresponds to DLP Link system 3D eyewear. However, not all the 3D eyewear operations are
warranted.
You are required to prepare external devices for viewing 3D images (such as 3D eyewear, video signal output devices) which
are suitable for your 3D system. For connections of the projector and external devices, they are different depends on the 3D
system to be used, see the operating instructions of external devices you use.
Refer to “List of 3D compatible signals” (
x
page 180) for the types of 3D video signals that can be used with the projector.
