I hope you have got it figured out, but if not, the code refers to the door interlock. In the back of the machine is a plug that seemingly goes nowhere. It is a provision for a safety feature that, if used, shuts down the machine when the OR door opens. However, it is rarely used. Instead, it is bypassed by the plug mentioned. If the plug is missing or is not connected properly, the fault 85 is generated. Check the plug and ensure a good connection. If you need anything further, feel free to contact the office.
Senior Laser Engineer