HP Designjet 4000 - print nothing - need help

I just bought a used HP Designjet 4000.

Tried to print the color calibration, but it prints nothing. Print heads moved, but no ink come out. No error message.

Cleaned all the printheads several times, and washed the printheads cleaner.

It doesn't help, just a little bit of yellow and cyan. No magenta nor black.

Tried to prime the tube, unfortunately, it request 'setup printhead'.

What would be the possibilities ?

Thank you