How do I manually clean the print head on an Epson L3210 to fix blue ink issues?

Manually cleaning the print head involves carefully wiping it with a lint-free cloth dampened with distilled water or a print head cleaning solution. First, open the printer cover and remove the ink cartridges. Locate the print head (usually a gray or black component). Gently blot the nozzles with the damp cloth, avoiding excessive pressure. Allow it to dry completely before reinstalling the cartridges and running a test print.