Reinstall missing or unresponsive [color] cartridge  [31.xy]

Try one or more of the following:

• Install the missing toner cartridge. For more information, see the “Replacing supplies” section of the User’s Guide.
• Remove the unresponsive cartridge, and then reinstall it.

Note:  If the message appears after reinstalling the supply, then the cartridge may be defective. Replace the cartridge.