Set the length of idle time before entering Sleep mode.
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Click [Start], and then select [All Programs] > [Okidata] > [Configuration Tool] > [Configuration Tool].
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Select the machine from [Registered Device Table].
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Click the [Device Setting] tab.
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Click [Menu settings].
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Click
(Display administrator settings). -
Enter the administrator password, and then click [OK].
The factory default password is "999999".
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Click
in order of [Admin Setup] > [Management] > [Power Save]. -
Select the transition time from [Sleep Time], and then click
(Save to device).