Panasonic PT-LW375, Руководство по эксплуатации, Страница: 20 / 119

20 - ENGLISH
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 projector lens with your bare hand.
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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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” (
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page 101), “Replacing the lamp unit” (
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page 102))
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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.
Chapter 1 Preparation - Precautions for use