Color/Mono

You can change the Color/Mono settings as follows:
Auto
The printer checks the content of your documents for color. If color is detected, it prints in color. If no color content is detected, it prints in monochrome.
Color
When your document contains color and you want to print it in color, select this mode.
Mono
Select this mode if your document has only black and greyscale text and/or objects. If your document contains color, selecting Mono mode prints your document in 256 levels of grey.
Note Note
If the Cyan, Magenta or Yellow toner reaches the end of its life, choosing Mono will allow you to keep printing as long as the Black toner does not reach the end of its life.