06-16-2014 01:07 PM
Welcome to the forums kiwitraveller
I understand you are looking to clean your printheads. Please see the guide below to clean the cartridge and electrical contacts.
Scroll down to Solution three: 'Cartridge Problem,' 'Cartridge Failed,' or 'Incompatible Cartridge' Error Message Displays on the C...
I work on behalf of HP
★Click the “Kudos Thumbs Up" at the bottom of this post to say “Thanks” for helping!