Samsung PN43D490A1D E-Manual page 119

Screen Burn Protection
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To reduce the possibility of screen burn, this unit is equipped with Pixel Shift screen
burn prevention technology. Pixel Shift moves the picture slightly on the screen.
The Time function setting allows you to program the time between movement of
the picture in minutes.
Your TV also has the following additional screen burn protection functions:
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Pixel Shift
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Auto Protection Time
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Scrolling
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Side Gray
English
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