• Do not turn off the power while the printer is in operation.
1. Push the main power switch.
The main power is turned off automatically when the shutdown process is complete.
If the shutdown process is not complete within the period of time displayed on the screen, contact
your service representative.
Saving Energy
This printer has the following energy saving functions:
Fusing Unit Off Mode
If you do not use the printer for a certain period after an operation, the display will turn off and the
printer goes into Fusing Unit Off mode. The printer uses less electricity in Fusing Unit Off mode.
When the printer is in Fusing Unit Off mode, the display is on but the fusing unit heater is off to save
energy. In this mode, you can change the printer settings on the control panel. However, the printer
must exit this mode to print.
You can change the amount of time that the printer waits before switching to Fusing Unit Off mode
under [Fusing Unit Off Mode Timer]. For details, see:
• "System", Operating Instructions. (for SP 4510DN)
• "Timer Settings", Operating Instructions. (for SP 4520DN)
To exit Fusing Unit Off mode, do one of the following:
• Start print jobs
• Display the [Maintenance] screen on the control panel (for SP 4510DN)
• Display the [Maintenance: Print] or [Maintenance: Image] screen on the control panel (for SP
4520DN)
• Operate the control panel when [Exit Fusing Unit Off Mode] is set to [On Operating Control
Panel]
• Start print jobs
Turning On/Off the Power
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