Sharp AQUOS LE580X Series Operation Manual page 54

<< TV Setup Operation
Example
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General (Continue)
No signal off
When this function is enabled, the TV
automatically shuts down if no signal is
received for more than 15 minutes.
NOTE
When it is 5 minutes before the power
shuts down, the remaining time will start to
keep appearing every minute.
When a TV programme finishes, this
function may not operate.
EN 3-36
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