Check Cartridge and Maintenance Box Status
Your product and its software will let you know when an ink cartridge is low or expended, or when the maintenance box needs to be replaced.
The WF-3720/WF-3730 Series do not include a user-replaceable maintenance box.
Checking Cartridge Status on the LCD Screen
Checking Cartridge and Maintenance Box Status - Windows
Checking Cartridge and Maintenance Box Status - Mac
Replacing Ink Cartridges and Maintenance Boxes
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