Digital BW, The Print

Hi- I have installed a Niagara CIS in my 1200, and after running some 
cleaning cycles and printing nozzle checks, the print assembly is now jammed 
at the right "parked position", with the load and power lights flashing, and 
the replace cartridge lights on. If I turn it off and restart, there is a
grinding 
of gears but the head doesn't move out of parked and the lights go back on, 
with an errror message on screen. During the setup I was cleaning infeed 
rollers and sliding the head back and forth for access and to check for smooth 
running of the tubing

Any ideas to get it running again?
Chris 
www.dandreaphoto.com