Panasonic PT-LB75U - Manual (Page 9)

Precautions with regard to safety
E
NGLISH - 9
Important Information
Avoid setting up in places which are subject to
vibration or shocks.
The internal parts can be damaged, which may cause
malfunctions or accidents.
Avoid setting up in places which are subject to
sudden temperature changes, such as near an air
conditioner or lighting equipment.
The life of the lamp may be shortened or the projector
may be turned off. See “TEMP indicator” on page 39.
Do not set up the projector near high-voltage power
lines or near motors.
The projector may be subject to electromagnetic
interference.
If installing the projector to the ceiling, ask a
qualified technician to carry out all installation work.
You will need to purchase the separate installation kit.
Furthermore, all installation work is should only be
carried out by a qualified technician.
If using this projector at high elevations, 1 400 -
2 700 m (4 593 - 8 858 ft) sea level, set the ALTITUDE
to HIGH. See “ALTITUDE” on page 35.
Failure to observe this may result in malfunctions or
the life of the lamp or the other components may be
shortened.
Do not use the projector at high elevation higher than
2 700 m (8 858 ft).
In order to get the best picture quality
Draw curtains or blinds over any windows and turn off
any lights near the screen to prevent outside light or
light from indoor lamps from shining onto the screen.
Optical components
If you use the projector consecutively 6 hours every
day, the optical components may need to be replaced
in less than 1 year.
Liquid crystal panel
Do not project the same image for long periods of
time, as this may remain as an afterimage on the
liquid crystal panel. Display the white screen test
pattern for more than an hour to remove it. See
“TEST PATTERN” on page 36.
The liquid crystal panel of the projector is built with
very high precision technology to provide fine picture
details. Occasionally, a few stuck pixels may appear
on the screen as fixed points of blue, green or red. It
is recommended to switch off the projector once and
try after 1 hour later again. Please note that this does
not affect the performance of your LCD.
The projector has a high pressure mercury lamp and
that is characterized as follows:
The brightness of the lamp depends on the duration
of use.
The lamp may explode or shorten the lamp life by
shocks or chipping damage.
The lamp may explode only occasionally after using
the projector.
When the lamp exploded, it emits the internal smoke-
like gas.
The lamp may explode if using the projector after the
instructed lamp replacement timing.
The lamp life is depends on individual lamp
characteristics, usage condition and the installation
environment. Especially the consecutive use of the
projector for more than 10 hours, or the frequent
switching on or off may greatly affect on the lamp life.
Do not touch the surfaces of the lens cover with your
bare hands.
If the surface of the lens cover becomes dirty from
fingerprints or anything else, this will be magnified
and projected onto the screen.
Take safety measures for use of the projector which
should cover the following envisioned incidents.
The leakage of your personal registered information.
Dishonest operation by an untrusted third party.
Locking out or prevent anyone else from using the
projector by an untrusted third party.
Security instruction
Change your password regularly.
Do not use too simple password to guess.
Any of Authorized Service Centers will never ask you
for the password.
Do not share your password with the general public.
Secure the network environment by the firewall.
Cautions when installing
Cautions on use
Security