Samsung UE27D5000NW E-Manual page 144

The after-image removal function has to be executed for a long time
N
(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.
N
Side Grey (Light
the screen is prevented from any damage by adjusting the white balance on both
extreme left and right sides.
◀
/ Dark): When you watch TV with the screen ratio set to 4:3,
English
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