Fanuc A20B-0007-0090 Axis board. Being a 4th axis controller PCB for the Fanuc 6 CNC. The A20B-0007-0090 is a peripheral PCB allowing the control to accommodate more axis control for more advanced machining. Also known as the GE Fanuc A20B-0007-0090 this board was fitted on the many version of the Fanuc 6 control system which interfaced with Fanuc DC velocity control unit namely the M series units 6047, repetitively. This board was fitted on 6, 6A, 6M, 6T pre SYSTEM 10, 11, 12. DNC offer a full service for the A20B00070090 1 axis controller board, including exchange to save money, testing and repair of the single axis peripheral board for the 6 control system.