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Part IV: Operation
Warning:
Do not leave stationary
or letterbox images on-screen
for
extended
periods of time.
Mix the types of pictures shown.
Uneven picture tube aging is NOT covered by your warranty.
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 display-
ing 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 con-
stantly 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 main-
tains 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 of the stationary
images in the picture.
Still or stationary
images may be received
from broadcasters,
cable channels,
sat-
ellite channels,
DVD discs, video tapes,
laser discs, on-line services, web/internet
searching devices, video games, and digi-
tal 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 watch-
ing a standard
(4:3) program on a wi-
descreen
(16:9) TV.
[]
Stock-market
report bars: ticker run-
ning at the bottom of the TV screen.
[]
Shopping channel loges & pricing dis.
plays: bright graphics that are shown con-
stantly or repeatedly in the same location.
[]
Video game patterns and scoreboards
[]
Bright station loges: moving or Iow-
ii
contrast graphics are less likely to cause
uneven aging of the picture tubes.
ii
[]
On-line (internet) web sites: or any
other stationary or repetitive computer style
images.
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