I have a 24" Z3200 printer which has not been used for a while, and the black half of the black/red printhead is not printing. I have ordered two copies of the No.70 printhead (C9409A) but both show as faulty when I install them. The original head (the clogged one) is a No.73 (CD949A), and does not show a fault when installed.
Should I be using a No.73 printhead instead of the No.70?
Thanks for any help.