Filter
Top Products
INSTALLATION AND ASSEMBLY
30
(11) Lighting
¶ Projection screens do not reflect external light like the CRT, but the screens and their base materials may still
cause reflection if strong light of a spotlight, etc. is directly incident to them. In such a case, prevent the
illumination lighting from hitting the screen surfaces directly.
¶ Glass plates for safety protection purpose may sometimes have to be attached on the screen surfaces de-
pending on their installation location. In this case, examine the installation positions carefully so that the
front glass plates do not reflect the external light.
¶ As the actual intended images of the system may not be obtained in very bright locations, consider the
position of lighting and direction of sunlight when installing the system. Especially when the system is ex-
posed to direct light (sunlight, etc.) from behind, the light may be reflected on the screen. Avoid such instal-
lations.
¶ Take note that in bright places, images may appear dark even when the luminance has been increased. In
addition, increasing the luminance and contrast more than required may affect the life of the system (espe-
cially the CRT).
(12) Effects of earth magnetism
¶ Due to effects of earth magnetism, the position of the image displayed will differ according to the installed
direction. Difference is about several mm in the up/down/left/right directions, but the degree of change varies
according to the strength of the earth magnetism of each area. Misconvergence may also occur due to slight
rotations.
Thus, when performing adjustments before moving the set to the place where it is to be installed, do so in the
same direction as the direction of installation, then readjust in the final position of installation.
¶ Normally perform adjustments in the final position of installation.
¶ The system is not only affected by earth magnetism but by the following magnetisms generated by various
items in its surrounding as well.
• Steel frame of building
• Power cables on the floor
• Large speaker systems
• Special equipment (Those generating magnetic force)
• Metallic installation table, frames, etc.
(13) Backyard ventilation
A temperature difference between the front and back of the screen may occur for any of a number of reasons,
such as an increase in the internal temperature of the system or a change in the effectiveness of air conditioning.
When such a temperature difference occurs, air will try to flow in order to equalize the temperatures. If there is
no path for the air to follow between the area in front of the screen and the backyard area then the screen may
warp.
You should make sure that there are paths in the backyard and in front of and behind the screen that will allow
ventilation. You should take particular care if the backyard is a closed room with no windows and powerful air
conditioning is installed.