How do I disassemble my Canon mx 922 printer

This bing(!) video should do the trick: https://www.bing.com/videos/search?q=rep...

I followed it after I got an error code indicating that the print head was bad; the print head was EASY to remove—no tools—but replacement ones are expensive & somebody suggested it could be a problem w a fuse on the logic board, so I opened up the side to visually inspect where the printhead cables attach.

Nothing is terribly hard