The magenta color became to fail (blurred letters). The cleaning procedure did not work. Some white stripes appeared in magenta fields.
I bought a filling kit and refilled all the cartridges. Black is beautifull. Cyan and yellow too. The magenta stoped completely to work after 4 or 5 print testing pages.
I use the printer very few times so I am inclined to think it is an ink dried problem.
Is there some secure way of cleaning the print head or test it to know if it is still working?