Samsung UN46ES6100GXZE - Manual (Page 178)

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Sleep Timer
Automatically shuts off the TV after a
preset period of time. (30, 60, 90, 120,
150, or 180 minutes).
N Select a period of time using your
remote. To cancel the Sleep Timer ,
select Off .
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On Timer
Set On Timer so that your TV turns on
automatically at a time and on a day
of your choosing. You can set up three