Fanuc A20B-0003-0754 Master PCB is one of the Masterboards that make up the main system of the Fanuc 5 Control series. This main PCB is the Control Section B master board, that carries the system software and EPROMs. The A20B00030754 PCB is connected to the section A board, and to other additional cards such as axis boards, tape edit control boards, position displays or CRT’s, and power supply units for the System 5 control (including the A20B-0003-0754). DNC offer a variety of services for the A20B-0003-0754 – Call for Prices – Warranty is 180 days ! Service Exchange, used outright if stock permits.