Cautions On Use - Panasonic PT-VW540 Operating Instructions Manual

Cautions on use

rTo 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.
rProjection lens
f 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.
It is recommended to attach the supplied lens cap to the projection lens when you do not use the projector.
f 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.
rLCD panel
The LCD panel is precision-made. Note that in rare cases, pixels could be missing or always lit. Note that such
phenomena do not indicate malfunction.
If still images are projected for a long time, a residual image may remain on the LCD panel. In this case, project
the all white screen for over an hour. Note that the residual image may not disappear.
rOptical parts
When the operating environment temperature is high or in environments where lots of dust, cigarette smoke, etc.
is present, the replacement cycle of the LCD panel, polarizing plate and other optical parts may be shorter even if
used for less than one year. Consult your dealer for details.
rLuminous lamp
The light source of the projector is a high-pressure mercury lamp.
A high-pressure mercury lamp has the following characteristics.
f The luminance of the luminous lamp will decrease by duration of usage.
f The luminous lamp may burst with a loud sound or have its service life shortened because of shock, chipping, or
degradation due to cumulative runtime.
f The luminous lamp life varies greatly depending on individual differences and usage conditions. In particular,
continuous use for 12 hours or more and frequent off/on switching of the power greatly deteriorate the luminous
lamp and affect the luminous lamp life.
f In rare cases, the luminous lamp burst shortly after the projection.
f The risk of bursting increases when the luminous lamp is used beyond its replacement cycle. Make sure to
replace the lamp unit according to the proper replacement time ("When to replace the lamp unit"
( Æ page 114) and "How to replace the lamp unit" (
f If the luminous lamp bursts, gas contained inside of the luminous lamp is released in a form of smoke.
f It is recommended to store replacement lamps for contingency.
rComputer 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
Æ page 115))
Indicated on the projector
ENGLISH - 19