If print quality has declined and the nozzle check
pattern indicates clogged nozzles, you can clean the print head.
Use the nozzle check pattern to determine which
colors need cleaning. You can save ink by cleaning only selected
colors.
Note: You
cannot clean the print head if an ink cartridge is expended, and
may not be able to clean it when a cartridge is low. You must
replace the cartridge first.