Hi,
We recently purchased a HP Designjet 500 Plus which is now out of warranty and did a test print immediately once it was home and it worked fine.
We have then waited a few weeks to use it again and on the next print an error message came up telling us to replace the printheads. We have bought a full set of 4 brand new printheads which are all within expiry date.
We have installed the new printheads and it still says to replace various printheads ranging from just one through to all of them after every attempt to install them.
We have removed them and cleaned the electrical contacts on the printhead and the carriage with no success.
For each printhead it says 'FAULTY, REPLACE PRINTHEAD'.
Each printhead has a different error code:
Cyan - 0234
Magenta - 0134
Yellow - 0334
Black - 0030
Please can someone please give some advice on how to fix this?
Thanks.