FANUC A20B-2200-0950 is an internal CNC keyboard and keypad PCB used in selected FANUC Series 0i-F Plus operator interfaces. It converts key operations into input signals for the CNC, supporting routine program entry, screen navigation, parameter access and machine operation.

Known applications include selected 0i-MF Plus and 0i-TF Plus configurations. The A20B-2200-0950 number identifies the internal keyboard board, not necessarily a complete MDI panel, LCD or CNC control unit. Confirm the board label, revision, key layout and host model before ordering.

A20B-2200-0950 Product Information

CNC Keyboard Input Function

The A20B-2200-0950 PCB sits behind the operator keyboard and detects key presses used for data entry and CNC operation. Depending on the complete panel configuration, these controls may include letters, numbers, cursor movement, page selection, editing and function keys. Worn contacts, contamination or PCB damage may cause dead, intermittent or incorrect key inputs.

Keyboard PCB and MDI Unit Compatibility

A keyboard PCB number and a complete A02B-series MDI or control-unit number describe different supply levels. Do not substitute A20B-2200-0950 with A20B-2200-0930, A20B-2200-0730 or another similar keypad board based only on appearance. Compare the exact PCB number, revision, connector position, mounting points, key matrix and front-panel layout.

Testing and Installation Notes

REACO CNC checks the board label, revision, connectors, traces, key contacts and complete key response as applicable. Before replacement, back up CNC data and isolate controller power. Use ESD protection, keep the contact surfaces clean and avoid bending the PCB or ribbon connections during installation.

Related resources: FANUC PCBs, FANUC CNC controls and FANUC keyboard and CNC repair service.