How do I resolve the 'U150 ink cartridge is not recognised' error message on my Canon MP520 printer?

I have found this. You will have to browse through them.





http://www.fixya.com/tags/ink_tank_not_r鈥?/a>





I found on other sites there appears to be a problem with all the colour catridges. [Bad design?]How do I resolve the 'U150 ink cartridge is not recognised' error message on my Canon MP520 printer?
Try holding down for a fair few seconds the reset button. This is usually a little button with a red triangle inside a red circle - this is what I have to do with mine. The orange warning light should go off as well. I have two Canons and both reset using this button. One is an MP220 the other MP610. You have to hold the button down hard for what seems likes ages but if this does not work then see if the manual says anything about that error - especially if you are using original cartridges.