I have not checked every model that has been reported with the "dreaded U052 wrong printhead" error, but I think they are all multi function printers with a built in scanner. Are there any non multi function, stand alone, printers that have this prob...
If there is a class action taken, keep in mind some of us already recycled our printers at local recycle centers after trying all the "fixes", that never worked. (My original post at Message 18)
I have a MP530 with this problem. The printer has only printed a total of 393 pages. What a shame to scrap such a nice printer because Canon will not give us a fix that works.