My pixma MG6220 recently started to only printed portions of a document and after 2 or 3 prints, it now only gives me blank pages.  The only thing that seems to print correctly is when I print a test page (print nozzle check pattern).  I get every color when I print a test page but I think there should be a grid on the top of the test page and I only get the rows with different colors (3 C's, 3 M's, Y, BK, 3 GY's).  I have unplugged and reset and downloaded the latest print drivers (they were pretty old so I think I already had the latest)

Any ideas on how to get my printer printing again?

Thank you