I just changes all of my dampers in the printer.  First time I have done that.  I bought the printer used about a year and a half ago.  Havent had any real problems.  Since I have changed the dampers, I have been having a problem.  When I send a filr from my rip software (onyx) to the printer, it initializes, and does everything normal, but when it starts printing, it prints about 1 bar, and then the head carriage just stops in its place, wherever it is.  Then the printer starts beeping, and i get a System error 1190, power system on/off.  I do that, and nothing changes, it does it everytime.  Any idea of what this could be?   I can run a nozzle test, and it prints that fine.  Please Help