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• When using optional trays:
– Always use a caster base when the printer is configured with a 2100‑sheet tray.
– The 2100‑sheet tray must always be at the bottom of a configuration.
– A maximum of four optional trays may be configured with the printer.
– The optional 250‑ and 550‑sheet trays may be installed in any order.
Using the printer control panel
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Use the To
1 Display
• View the status of the printer.
• Set up and operate the printer.
2 Home button Go to the home screen.
3 Sleep button Enable Sleep mode or Hibernate mode.
Do the following to wake the printer from Sleep mode:
• Press and release the Sleep button.
• Touch the screen or press any hard button.
• Open a tray, cover, or door.
• Send a print job from the computer.
• Perform a power‑on reset with the main power switch.
• Attach a device to a USB port.
4 Keypad Enter numbers, letters, or symbols on the printer.
5 Stop or Cancel button Stop all printer activity.
6 Indicator light Check the status of the printer.
7 USB port Connect a USB Bluetooth adapter or a flash drive to the printer.
Note: Only the front USB port supports flash drives.
Understanding the colors of the Sleep button and indicator lights
The colors of the Sleep button and indicator lights on the printer control panel signify a certain printer status or condition.
Using MS812de 139