HP Officejet Pro 8620 black had lines. Cleaned printhead , new cartridges, error prob w printer or i

[Bobbsafe]

HP Officejet Pro 8620 black had lines. Cleaned printhead in warm water , new cartridges, error message: prob w printer or ink system. Turn off/on. If prob persists contact HP.

[Nal_NR]

Hi @Bobbsafe,

Welcome to the HP Support Community. 

I'd be happy to help you! 

I understand that you are facing issues with the print quality. 

If you have performed all the steps from this document and still having issues, then either the cartridge is faulty or the printer. 

Try updating the firmware and see if that helps. Click here

You may also refer to this document for further assistance. 

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!