Thank you for the update, welcome back again.
I checked you cannot remove the printhead, however yiou can clean them.
Refer to this link.
https://www.youtube.com/watch?v=iTPASKLUzPc
click here for more information.
I hope this helps! Keep me posted.
Please click “Accepted Solution” if you feel my post solved your issue, it will help others find the solution.
-Regards
Raj-HP Support