Fanuc A20B-1000-0500 CRT/MDI board. This PCB works within the later SYSTEM 6 controls to interface between the system and the CRT on the MDI unit, such as a CRT/MDI unit such as A02B-0060-C032 with a 9 inch monochrome green CRT monitor. Normally this board ran on most of the generations of SYSTEM 6 controls.
DNC offer a full service for the A20B10000500 MM interface pcb. Including exchange to save money, and surplus spares are stock dependent.