"Problem with local interface detected" on WorkCentre 5638.
Doesn't t boot up but user interface states: "Problem with local interface detected. Turn off and restart". Unit dosn't turn off unless unplugged. 16K copy count. Unit worked fine until I recently but gently, hand trucked it to the second floor. Can it be a local ionterface board failure? Where is that board located. It doesn't appear to be located in the pull-out rear board tray. Thanks for any and all help.