The error code you gived is related to the scanner. It can be as simple as a bad connection with some cables. But it can go as far as to replace multiple board and to reload the software.
If you have a contract or warranty with Xerox, think no further and call Support. A Technical Service Representative need to go onsite to help you.
There is maybe more error codes underneath this problem that need to be taken care of before fixing the 62-461.
Hope you success!