Samsung LN40D503F6FXZA E-Manual page 54

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No Signal Power Off (Off / 15 min. / 30 min. / 60
the TV switches to standby mode, if no picture is being received.
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Auto Power Off (Off /
user operation is received for 4 hours.
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On): The TV will be automatically turned off when no
English
min.): Sets how quickly
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