Canon Community

I can print to my TR4520, but can't scan from it.  When I try from the computer I get an error that it cannot communicate with scanner, and code 2,157,50.  When I try to scan from the scanner, it says "please wait a while" and then goes back to the m...

I've recently started having a problem with my printer when I print two sided.  The first sides print fine, but when I load the pages back into the feeder, it will pull multiple sheets through at once, completely messing up the double sided printing....