Was having issues with my Epson SC P600, heads wouldn't clean. Took it apart and there was so much gunk in the head cleaning pads, wiper and excess pad that I'm not surprised it refused to work. Cleaned out the pads and it cleaned up first time. Not having printer cleaning solvent, I used some of my Right Stuff record cleaning fluid. I've ordered some Magic Bullet fluid to clean the print heads and an external waste tank.