FANUC A20B-1009-0340 is a compact CNC connection and adapter board that provides signal routing between compatible FANUC control components. Its layout includes a high-density multipin connector and a board-edge interface marked SP.

This PCB acts as a physical electrical interface rather than a CPU, memory card or drive power board. The exact -0340 suffix identifies its connector arrangement and signal paths, so the complete number printed on the original board must be matched before replacement.

A20B-1009-0340 Product Information

CNC Signal Interface Function

The A20B-1009-0340 provides fixed signal paths between its mating connectors. This allows compatible FANUC control modules and wiring assemblies to exchange defined electrical signals without placing the connections directly on a main CPU board. It does not execute CNC programs or independently control a servo or spindle motor.

Compatibility and Identification

Match A20B-1009-0340 exactly and compare any revision code printed after the base number. Confirm the host CNC unit, connector type, pin count, PCB dimensions, mounting points and SP interface orientation. A20B-1009-0300, 0290, 0370 and other A20B-1009 boards may look similar but use different routing layouts.

Testing and Installation

REACO CNC checks the board number, substrate, connector pins, edge contacts, solder joints, continuity and signs of corrosion or physical damage, followed by functional testing in a compatible setup where applicable. Use anti-static handling and isolate control power before removing or installing the PCB.

Related resources: FANUC circuit boards, FANUC CNC controls and FANUC CNC repair service.