The Maintenance Cartridge absorbs excess ink from borderless printing, printhead cleaning, and other processes. You can confirm the remaining capacity of the Maintenance Cartridge by checking the Maintenance Cartridge capacity shown on the Display Screen. To check remaining Maintenance Cartridge capacity, access the [Tab Selection screen] on the Control Panel and press or to select the Settings/Adj. tab ().

If the Display Screen indicates to replace the Maintenance Cartridge, replace the Maintenance Cartridge. If a message is displayed indicating to check the remaining capacity of the Maintenance Cartridge, or before tasks that deplete much of the capacity such as head cleaning or preparations to move the printer, check the remaining Maintenance Cartridge capacity and prepare a new Maintenance Cartridge as needed.

(See "When and How to Replace the Maintenance Cartridge (iPF680/iPF685/iPF780/iPF785/iPF670/iPF770)")