Fanuc A20B-2100-0030 Main Control Printed Circuit Board

The Fanuc A20B-2100-0030 is a Fanuc-manufactured main control printed circuit board (PCB) that functions as the central control module in compatible Fanuc CNC control systems. Identified by the exact part number A20B-2100-0030, this board is used as the main control board within Fanuc controllers and is designed to consolidate the controller’s essential processing and interface duties into a single motherboard-style PCB. As a replacement part for Fanuc automation equipment, it supports configurations that require the A20B-2100-0030 main control board, helping technicians restore or maintain machine operation when this specific component is needed. The part number provides a precise reference for sourcing and compatibility checks in maintenance inventories.