What should I do if my Epson L3210 displays a 'Nozzle Check Failure' error?

A 'Nozzle Check Failure' error on your Epson L3210 indicates that some of the print nozzles are clogged. The first step is to run the printer's built-in 'Cleaning' cycle. If that doesn't resolve the issue, run the 'Deep Cleaning' cycle. You can also try manually cleaning the print head using a print head cleaning solution and a lint-free cloth. If the error persists after multiple cleaning attempts, consider contacting Epson support or a qualified printer technician.