We have an MX490 which has worked perfectly before, but not will not do anything, including copy. Our devices (a mix of os and connection types) all say that the printer is busy. The printer display panel is completely normal and appears to work, but sometimes I get the error "Cannot change setting" and any function that should print something does nothing.
I had tried resetting the printer every way I could find, but I feel that somehow a full reset would resolve this problem, but it may be a form of dead.
Any ideas?