MITSUBISHI ELECTRIC WS-48515 - Manual (Page 54)

54
Chapter . . .
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
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 subtle but permanent ghost
images. To avoid this, mix your viewing patterns.
Reducing the initial contrast level can help slow the
aging process. Do not show the same stationary image
for more than 15% of your total TV viewing in any given
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 and leave subtle ghosts from
the stationary images in the picture.
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 can be, 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.
News and 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.
Online (Internet) websites:
or any other stationary or repetitive computer style
images, including digital photos or computer
applications/programs.
Closed Captioning
Mitsubishi recommends using a gray background
rather than black or a bright color if you frequently use
closed captioning.