Panasonic PT-TW381R, Руководство по эксплуатации, Страница: 19 / 136

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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Projection lens
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Do not touch the surface of the projector lens with your bare hands.
If the surface of the lens becomes dirty from fingerprints or anything else, this will be magnified and projected
onto the screen.
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Do not wipe the lens during operation.
Cleaning the lens during operation may cause foreign objects adhering to the lens
or bring damage to the lens surface.
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LCD Panel
The display unit of this projector comprises three LCD panels. Although an LCD panel is a product of high-precision
technology, some of the pixels on the projected image may be missing or constantly lit. Please note that this is not
a malfunction.
Displaying a still image for a longer time may result in an after-image on the LCD panels. If this happens, display
the all white screen in the Test pattern for an hour or more.
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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, such as the LCD panel and polarizing plate, and may
necessitate their replacement within less than one year of use. For details, consult your dealer.
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Lamp
The luminous source of the projector is a mercury lamp with high internal pressure.
A high pressure mercury lamp has following characteristics.
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The brightness of the lamp will decrease by duration of usage.
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The lamp may burst with sound or shorten life by shock or chipping.
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The life of the lamp varies greatly depending on individual specificities and usage conditions. In particular,
continuous use over 6 hours and frequent on/off switching of the power greatly deteriorate the lamp and affect
the lamp life.
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In rare cases, the lamp burst shortly after the projection.
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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 consistently. (“When to replace the lamp unit” (
x
page 115), “Replacing the lamp unit”
(
x
page 116))
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If the lamp bursts, gas contained inside of the lamp is released in a form of smoke.
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It is recommended to store replacement lamps for contingency.
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Computer and external device connections
When connecting a computer or an external device, read this manual carefully regarding the use of power cords
and shielded cables as well.
indicated on the projector
Chapter 1 Preparation - Precautions for use