By default, the scanner will enter Sleep Mode after 15 minutes of inactivity, and will turn off automatically after two hours of inactivity to conserve power.
Windows: To change the default auto-off settings, use the Touch Panel or Embedded Web Server.
OS X: To change the default auto-off setting use the Energy Pane.
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Start HP Utility.
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Click the Energy icon.
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Select a Lamp Mode setting.
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Select an auto-off time setting from the Automatically power off the scanner: drop down box.
