How to set the sleep mode timeout on the DM300C, DM400C, DM450C and DM475

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Products affected: DM300C™, DM400C™, DM450C™, DM475™
When the machine is in sleep mode, the display is blank and mail cannot be processed. To "wake" the machine, press any button on the control panel except Stop or Start. Watch this video or follow the steps after to set the sleep mode timeout:

To set the amount of time the machine waits before entering sleep mode:
  1. Press Menu.
  2. Select Setup.
  3. Select Time and Timeouts.
  4. Select Sleep Mode.
  5. Enter the number of minutes (between 1-240) that the machine should wait before going into sleep mode.
  6. Select Accept.
  7. Press Home to return to the home screen.
If you require additional assistance, contact technical support. Please have your model and serial number ready.

UPDATED: June 09, 2017