"MAINTENANCE REQUIRED"

The machine is in a state in which manual cleaning should be performed.

The user attempted to print after a length of time exceeding the threshold had passed since manual cleaning was last performed. Press [ENTER] to clear the message, and then perform manual cleaning.

If you do not perform manual cleaning, you will not be able to perform setup of media or any cleaning other than manual cleaning.

For details on manual cleaning, see the "User's Manual, Maintenance Edition."