Samsung UN75ES9000F E-Manual page 450

that reads Brightness Test failed. This
means that it is too dark for Motion
Control to see your movements. It
is suggested that you increase the
brightness in your room. Also, check
the angle of the camera to be sure it is
facing out at you. Rotate the camera
angle dial located on the back of the
camera. After checking these things,
select retest. If there is enough light
in the room the prompt will read