Samsung UN60ES7500FXZA - Manual (Page 449)

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Motion Control Environment Test
Brightness Test : In order for Motion
Controls to work there must be
sufficient light in the room. The
Brightness Test measures the ambient
light in the room. Stand or sit no more
than 13 feet away from your TV and
select the start option. The Brightness
Test will begin and should take about
10 seconds. If there is not sufficient
light in the room you will get a prompt