The FANUC A16B-2203-0875 is a power printed circuit board (power PCB) used in selected FANUC Alpha i Series αiSV360 servo amplifier modules. It forms part of the power stage and works with the control PCB and IGBT modules to support servo-axis power conversion and motor control.

FANUC configuration tables associate this board with A06B-6114-H109 and A06B-6117-H109 single-axis αiSV360 amplifiers. A common revision is A16B-2203-0875/05C; always match the complete number and revision printed on the original PCB.

A16B-2203-0875 Product Information

αiSV360 Power-Stage Function

The board carries power-stage circuitry and interfaces with the control section and power modules. A damaged PCB may be associated with startup failure, overcurrent, DC-link or IPM alarms, but the control PCB, IGBT modules, motor, cables and incoming supply should also be checked.

Exact Amplifier Compatibility

A16B-2203-0875 is documented for the αiSV360 configurations above and should not be selected only because another amplifier belongs to the Alpha i family. Other SVM ratings use different power PCBs. Confirm the amplifier order number, unit specification, PCB revision, connectors, control PCB and power-module combination.

Testing and Installation Notes

REACO CNC checks the part number, revision, connectors, solder joints, visible power components and applicable electrical functions. Qualified personnel must isolate power and allow the DC bus to discharge before installation. Record wiring and board positions, and back up CNC and servo parameters before service.

Related resources: FANUC circuit boards, FANUC servo drives and FANUC CNC repair services.