It could be also dirty print head. There are cleaning procedures in Maintenance menu, you can also take the print head off the printer, and clean it with lint-free napkin soaked in water (altough I use paper towels).
It could be also dirty print head. There are cleaning procedures in Maintenance menu, you can also take the print head off the printer, and clean it with lint-free napkin soaked in water (altough I use paper towels).