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12) You must follow all National Electrical Code regulations. In addition,
be aware of local codes and ordinances when installing your system.
13) Refer all servicing to qualified service personnel. Servicing is
required when any of the displays have been damaged in any way. For
example, if the AC power cord or plug is damaged, liquid has been
spilled or objects have fallen into a display, the displays have been
exposed to rain or moisture, do not operate normally or have been
dropped.
14) Keep the packing material in case the equipment should ever need
to be shipped.
15) Wall mounts must be secure. The wall must be strong enough to
hold all displays, mounts, brackets and cables.
16) Slight pressure on the LCD will cause distortion of the image.
Heavier pressure will cause permanent damage. Displays should be
mounted in a way that viewers cannot insert small objects in the
openings that will create hazards by contacting bare conductive parts.
Normal use of an LCD is defined as displaying continuously changing
video patterns or images. However, LCDs can experience temporary
image retention when recommended usage guidelines are not followed.
What is Temporary Image Retention?
Temporary image retention (TIR) can occur when a static image is
displayed continuously for extended periods of time (12 hours or
longer). An electrical charge differential may build up between the
electrodes of the liquid crystal, which causes a negative-color video
image (color-inverted and brightness-inverted version of the previous
image) to be retained when a new image is displayed. This behavior is
true for any LCD device from any LCD manufacturer.
TIR is not covered under warranty. See standard warranty terms and
conditions for details. Here are some guidelines to help you avoid TIR:
• Use the LCD to show a screen saver, moving images or still
pictures that change regularly. When using high-contrast
images, reposition the images frequently.
• Turn off the LCD when it is not in use. To use your source
computer’s Power Options Properties, set up your computer to
turn off the display when not in use.
4PS7050/PS7050T User Manual
17) The front polarizer is soft and subject to scratches from sharp
objects. The polarizer is a thin sheet of film laminated to the outside
layer of glass on the LCD screen. Take care when handling items near
the screen.
turn off the display when not in use.
Caution: For optimal performance, we suggest turning off the backlight
power on the display for six hours per day.
Normal Usage Guidelines
Normal use of the LCD is defined as operating in the open air to prevent
heat buildup, and without direct or indirect heat sources such as
lighting fixtures, heating ducts, or direct sunlight that can cause the
modules to experience high operating temperatures. For all modules,
do not block fans or ventilation openings. If the LCD module will be
installed in a recessed area with an LCD surround or enclosure, ensure
adequate openings are applied for proper air flow and ventilation.
At 2000 meters or below, the maximum ambient operating temperature
for the LCD module cannot be above 50º C nor below the minimum
ambient operating temperature of 0º C. If one of these conditions exists,
it is up to the installer to ensure that placement is changed, thermal
shielding is provided and/or additional ventilation is provided to keep
the display within its nominal operating parameters.
Recommended Usage
In order to get the most out of your LCD, use the following
recommended guidelines to optimize the display.
Burn-In Versus Temporary Image Retention
Burn-in causes the screen to retain an image essentially forever, with
little or no way to correct the problem. Under normal use, an LCD will
not experience burn-in, as plasma displays do, nor will it retain images
in any way.