Samsung PX5ISDBA E-Manual page 102

● Scrolling: This function removes after-images on the screen by moving all
the pixels on the PDP according to a pattern. Use this function when there
are remaining after images or symbols on the screen, especially when you
displayed a still image on the screen for a long time.
The after-image removal function has to be executed for a long time
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(approximately 1 hour) to effectively remove after-images on the screen.
If the after-image is not removed after performing the function, repeat the
function again.
Press any key on the remote control to cancel this feature.
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