MITSUBISHI ELECTRIC WS-48513 - Manual (Page 72)

72
Chapter . . .
The normal use of a TV should include a mixture of TV
picture types. The most frequently used picture types
should fill the screen with constantly moving images
rather than stationary images or patterns. Displaying
the same stationary patterns over extended periods
of time, or displaying the same stationary pattern
frequently can leave a subtle but permanent ghost
image. To avoid this, mix your viewing pattern. Do
not show the same stationary image for more than
15% of your total TV viewing in any one week. Display
constantly moving and changing images that fill the
screen whenever possible.
This projection TV uses picture tubes to project the
image to the screen. All picture tubes age with use. As
they age, their light output is gradually reduced. Normal
TV pictures fill the screen with constantly changing
images. Under these conditions, picture tubes age at
an even rate across the entire screen. This maintains
a TV picture that is evenly bright over the whole
screen. Stationary images or images that only partially
fill the screen (leaving black or colored bars to fill the
screen), when used over extended periods of time or
when viewed repeatedly, can cause uneven aging of
the phosphors used in the picture tubes and can leave
subtle ghosts of the stationary images in the picture.
When using a computer or similar device through a
VGA input, be sure to turn on the Screen Saver feature
and set the activation time to 5 minutes or less. If your
computer program allows, you should also set your
toolbars to the hidden mode.
Still or stationary images may be received from
broadcasters, cable channels, satellite channels, DVD
discs, video tapes, laser discs, on-line services, web/
internet searching devices, video games, and digital
TV tuner/converter boxes. Examples of these types of
images include, but are not limited to the following:
Letterbox top/bottom black bars: shown at the
top and bottom of the TV screen when you watch a
widescreen (16:9) movie on a standard (4:3) TV.
Side bar images: solid bars shown on each side of
an image when watching a standard (4:3) program on a
widescreen (16:9) TV.
Stock-market report bars: ticker running at the
bottom of the TV screen.
Shopping channel logos & pricing displays: bright
graphics that are shown constantly or repeatedly in the same
location.
Video game patterns and scoreboards
Bright station logos: moving or low-contrast graphics are
less likely to cause uneven aging of the picture tubes.
On-line (Internet) web sites: or any other stationary or
repetitive computer style images.
Closed Caption Backgrounds: When set to black or
bright color, if Close Caption will be used frequently, Mitsubishi
suggests the use of the gray background.
WARNING:
Do not leave stationary or letterbox images on-screen for
extended periods of time. Mix types of pictures shown. Uneven picture tube
aging is NOT covered by your warranty.
IMPORTANT NOTES