Fanuc A20B-2002-0650 Series 0-C Master PCB is the last of the 0 series pre I versions of today’s current 0i the 0iD and 0i-Mate controls. The system designation is Fanuc 0MC, 0TTC, 0MD, 0TTD, 0MF, 0TTF and the masterboard unlike the other 0 series main boards does not support memory, axes, i/o and acts like a bus plane though it does have the 486 intel DX2 processor. The A20B20020650 has peripheral boards plug into it, the most basic configuration carries 3 boards, such as the memory, axis and i/o with a PMC cassette. Larger systems can include a graphics processor/sub-system, additional 5th/6th axis boards, and a PMC-M board. DNC offer a variety of services for the A20B-2002-0650 includes exchange, repair and testing of the mother board and the rest of the control system if required.