User GuideP 501/502

Saving Energy

This machine has the following energy saving functions.

Fusing Unit Off mode

If you do not use the machine for a certain period after an operation, the machine makes a clicking sound and enters Fusing Unit Off mode.

When the machine 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 machine's settings on the control panel. However, the machine must exit this mode to print.

You can change the amount of time that the machine waits before switching to Fusing Unit Off mode under [Fusg Off Mode(En Sav) On/Off]. For details, see "Timer Settings", Settings.

To exit Fusing Unit Off mode, start print jobs.

Sleep mode

If the machine remains inactive for a specified period, it enters Sleep mode to further reduce the power consumption. The machine also enters Sleep mode when:

  • The machine waits before entering Sleep mode is set in [Sleep Mode Timer]

  • It is the day and time specified in [Weekly Timer]

For details about setting [Sleep Mode Timer] and [Weekly Timer], see "Timer Settings", Settings.

To exit Sleep mode, press one of the keys other than [Switch Functions] key on the control panel.

Note

  • The energy saving functions will not activate when:

    • Communicating with external devices

    • The hard disk is active

    • A warning message is displayed

    • The service call message is displayed

    • Paper is jammed

    • The machine's covers are opened

    • Toner is being replenished

    • The machine settings screen is displayed

    • Fixed warm-up is in progress

    • Data is being processed

    • Operations are suspended during printing

    • The Data In indicator is on or flashing

    • The sample print, locked print, hold print, or stored print screen is displayed

    • Accessing the machine using Web Image Monitor

  • The machine consumes less energy when in Sleep mode, but it takes longer to start printing.

  • If two or more energy saving functions are set, the function for which the predetermined conditions to enter energy saving mode are met takes effect first.