The black ink on my Maxify MB5120 is not printing well on documents and is almost unreadable. There is no "low ink" indication that the cartridge is low or out of ink. I therefore tried cleaning the print heads multiple times to no avail. So I followed the process for deep cleaning the print heads via the control panel on the front of the printer. The problem still exists. I then followed the instructions on the Canon support page to power down, wait 24 hours, and perform deep cleaning again, yet the problem persists.
Any thoughts on my next steps to correct the problem? (Note: The printer is out of warranty.)
Thank you!