sorry this was for a different question. I have done a reply for this one already.
Bob
February 2008
E803 means there is a fault on the 24 volt line from the power supply unit. Can be caused by faulty door switches more most likely to be a faulty unit. These are difficult to repair and best to try and get a replacment one but this is now an old machine.
howtomendit.com for free repair help, information and advice.
Try fixfault.com to fix photocopiers.