Hello, I have an Epson 9800 and I have a problem. I was doing a nozzle check because my yellow was missing segments. After two nozzle checks it started to print “blank” pages. I followed the procedures by doing a power clean. Afterwards it wouldn’t print anything. When I check the ink tubes there appears to be air bubbles in the light magenta and light light black tubes. When I perform the nozzle checks, the air bubbles stay where they are as if the ink is not being pressurized. What should I do next?