Samsung PN51E6500EFXZA - Manual (Page 241)

Sound Feedback or adjust its volume.
●
Panel Lock
Lock or unlock all the keys on the front
panel at once. When Panel Lock is on,
none of the keys on the front panel
operate.
●
Boot Logo
Displays the Samsung logo when the
TV is turned on.
●
Light Effect
for LED 7100 and 7150 Series
You can turn the LED on the TV’s front