Lexmark C780, C782 manual Status Indicates

	Printing
Operator panel buttons
Button	Function
Back	Press the Back button to return to the last screen viewed.

Note: Changes made on a screen will not be applied if you press the Back button.

Menu	Press the Menu button to open the menu index.
	Note: The printer must be in the Ready state to access the menu index. A message
	indicating the menus are unavailable will appear if the printer is not ready.
Stop	Press the Stop button to stop the mechanical operation of the printer. After pressing Stop,
	the message Stopping is displayed. When the printer has stopped, the status line in the
	operator panel will show Stopped, and a list of options will appear.
Indicator light	A two-toned green and red LED is used on the operator panel. The lights indicate whether
	the printer power is on, the printer is busy, idle, processing a job, or requires operator
	intervention.
		Status	Indicates
		Off	Power is off
		Solid green	Printer is on, but idle
		Flashing green	Printer is warming up, processing data, or printing a job
		Solid red	Operator intervention is required
Navigation buttons		The Up and Down buttons are used to move up and down lists.
		When navigating through a list using the Up or Down button, the cursor
		moves one line at a time. Pressing the Down button changes the screen to
		the next whole page.
		The Left and Right buttons are used to move within a screen, such as
		moving from one menu index item to another. They are also used to scroll
		through text that will not fit on the screen.
		The Select button is used to initiate action on a selection. Press Select to
		select an item, to submit a configuration item, or to start or cancel a job.
USB Direct interface	The host USB Direct interface on the operator panel is used to plug in a USB flash memory
	device and print PDF and supported graphic files (.gif, .jpeg, .jpg, .bmp, .png, .tiff, .tif, .pcx,
	and .dcx files).
	Note: A USB port is located on the back of the printer to connect a host computer.

Understanding the printer operator panel

27