We are getting periodic DOOR OPEN errors from our Vutek printer. Doors are all closed, electrician has verified that the correct voltage is reaching the power board from the door sensors. Power board in the printer was replaced with a new one last week. Printed a weeks worth of orders this morning beautifully but then just randomly popped up with the DOOR OPEN error message this afternoon. On the job immediately prior to this one it did give a LED LAMP ERROR message so we shut down and restarted and it appeared to be working fine but halfway through the next job we got the DOOR OPEN message. Anyone have any ideas before we have to get a tech in to throw parts at it?