I too am getting the U052 error, (Wrong Print Head). What gives? I love this printer and it has worked flawlessly since day one. Now, I get a print head error. After contacting Canon, they tell me to "reseat" the print head. I did more than that. I reset the print head, I powered down the printer completely. I changed the ink tanks. It printed two more pages, then the error pops up again.
I did nothing wrong to get this error. I can't afford to spend $100 for a print head, just to see if that fixes it. I examined my print head. I see nothing wrong with it. What good would a new one do?
I don't know what to do. I have many other Canon products that I use and love. Why can't Canon be as loyal as I am?