I have tried every thing you have suggested and all I get is the error message, seems like this is programed into the printer, why should the print head prevent the printer from being used as a scanner, this is very dissapointing. I am 74 years old and find this very hard to believe. I am the only one using this printer and rarely print anything, I do use it as a scanner but almost never print. I have now a unit, MX892, that is completely useless, the warranty is expired and I have accumilated about 25 spare ink cartridges that are now worthless.
This was the very best printer I ever owned and I was proud of it, now I think Canon is a rip off company finding ways to make sure people have to buy new equipment when they should not have to, I have been buying Canon products since I got into photography in the '50s and always trusted Canon, but after reading and experiencing this "wrong print head" error message U052 I am changing my mind about Canon. I will pray for you, and in short while I'll be in Heaven asking the Lord to give you the grace to treat people with Love and fairness.
God bless and guide you
Jim
