Digital BW, The Print

I recently uninstalled a cfs from my epson 1270.  It was no longer 
printing.  Couldnt get a good nozzle check.  I reinstalled the regular 
carts and the head isnt printing.  Tried several nozzle checks and 
cleaning cycles, but no ink is coming out.  Any suggestions from those 
who have had prior experience with this type of problem?  

Thanks in advance.

Mike