Samsung TV E-Manual page 173

N
The USB device must be connected
to your TV before you can select
USB.
N
If you select a source other than
or USB, you must:
Œ
Have a cable or satellite set-top
box attached to that source.
ΠSet the set-top box to the
channel you want to watch when
the TV goes on.
Œ
Leave the set-top box turned on.
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