Poor quality printing after changing ink

[mimpski]

I have replaced both ink cartridges and now the print quality is awful/most of it missing.

I have run diagnostics and the cleaning process three times with no improvement.

The scanner cannot even pick up the test print because it is so light.

[Nal_NR · Accepted solution]

Hi @mimpski,

Welcome to the HP Support Community. 

I'd like to help!

Update the Firmware by selecting the current OS. Click here

If that does not help, and if you have performed all the steps from this document, either the cartridge is faulty or the printer needs to be checked. 

Hope this helps! Keep me posted for further assistance.
Please click “Accepted Solution” if you feel my post solved your issue, it will help others find the solution. Click the “Kudos/Thumbs Up" on the bottom right to say “Thanks” for helping!