Epson 7890 Head Replacement

Hi, I have just replaced the print head on my 7890 due to delamination, the swap went fine and I have run an Initfill and a CL2 clean.
However, when I run a nozzle check I get nothing at all. It prints nothing at all. It is a brand new print head.
What have I missed?
Would poor ribbon connections cause this as I was unsure if the ribbon connectors had gone in far enough?
Any suggestions of a process I can run to get it going again or to check what might be wrong?

Any suggestions gladly accepted.


Did you solve this issue? I once had the same problem (nozzle check printed nothing at all) and it turned out the vacuum pump needed to be replaced. I hope you solved this long ago, but just in case, I thought I’d tell you my experience. ~ MOUSIE Clark