For example-- will changing out the printhead get rid of a b200 error for good? Or do I have to turn the printer on with the door open, disengage the inks, re-engage them, shut the door, open the front door, sing "Ave Maria", fry up some carp and then run around my neighbor's naked 3 times? Cannot someone from Canon just say WTF the code means and HTF to fix it? I have a (great) printer I have not been able to use in almost 3 months and every printer repair shop I have spoken with tells me to just recycle it. Please help?
Seems you found the secret list of error codes for your MX922.
You can call Canon but I'm not sure they will give you a new print head.
Though you are welcome to ask.