HP Photosmart 5520 prints diagnostic page, but nothing else

[GopherN]

I replaced all the ink cartridges in my HP Photosmart 5520 with new, genuine HP cartridges.  The diagnostic page prints fine.  Nothing else will copy or print.  Shoots out blank pages.  Tried removing the cartridges and putting them back in.  Tried cleaning the print heads.  Again, diagnostic page prints, cartridge status indicates full, but nothing will copy and nothing prints.  Only shoots out blank pages. 

[silvyg]

Hi, Please try to copy something in black first, check if that prints. then try a color copy and check if that prints. sometimes maybe black cartridge goes bad and it wont print anything when you try to print in black. so if you try to print in color and black you will be able to isolate the issue. and if it prints color and not in black only then please refer to this doc. https://support.hp.com/in-en/product/hp-photosmart-5520-e-all-in-one-printer-series/5157533/document...