Printer HP D2466 Paper Jam

Just now, i have repaired Printer HP D2466. The damage is that the paper jam in the middle of printing. When printing begin the paper loaded but not moving in the middle position and power led blinking. If X button pressed the paper will come out, but the next paper jam again.
I have checked encoder and timing disk and no indicate damage. And finally, i found the damage is in the home cartridge. The feed of home cartridge is broken, I replaced the home cartridge where the cartridge placed and printer working normally.