Epson AL-M320DN User Manual page 69

AL-M320DN/AL-M310DN/AL-M220DN User's Guide
Maintaining the Printer
Statuses and handling methods (status monitor messages in bold)
Replace Toner cartridge
The toner cartridge has reached the end of their service life and need to be
replaced.
For details about replacement, see the instructions that come with the toner
cartridge.
69