FANUC A20B-8101-0281 ZERO i-C Main PCB

Overview

The A20B-8101-0281 is a FANUC main PCB in the A20B-8101 family. Public industrial listings identify it as a ZERO i-C MAIN PCB, and other sources describe it as a 0iC system main board or FANUC mainboard.

One public source also notes that the model is commonly used in Fanuc 0iC series controls, which gives the board a clear installed-base context as a core control board rather than a peripheral PCB.

As a main board, this model belongs at the center of the CNC hardware structure. In real service work, exact model continuity matters because the main board defines the original control platform, internal board-family position, and core hardware layout of the machine.

Public listings also present this model as a board-level replacement item, which is consistent with its role in lifecycle support and controller repair.

Technical Data

Applications

This board is suited to installed FANUC 0iC / ZERO i-C CNC systems where the original hardware already uses the A20B-8101-0281 main-board structure.

It is especially relevant in controller repair, main-board replacement, refurbishment, and lifecycle support where the same CNC platform must be retained.

Replacement Guidance

Before ordering, confirm the installed part number, verify that the control platform is 0iC / ZERO i-C, and make sure the original main board is A20B-8101-0281.

Since public listings also show stocked replacement, core exchange, and refurbishment contexts, exact board-code confirmation is the most important replacement step.

FAQ

Q1: What kind of board is A20B-8101-0281?

It is a FANUC main PCB. Public listings identify it specifically as a ZERO i-C MAIN PCB, and other sources describe it as a 0iC system main board, which places it at the core of the installed CNC hardware.

Q2: Why is the ZERO i-C / 0iC description important?

Because that description identifies the installed control family the board belongs to. Main boards are selected by exact control platform, and the repeated ZERO i-C / 0iC wording is one of the clearest compatibility markers for this model.

Q3: Is this a core control board or a peripheral board?

It is a core control board. Public listings place it in the main board / mainboard category, which means it belongs to the central hardware structure of the CNC rather than to a peripheral or signal-only board position.

Q4: Is there any public service or stock context for this model?

Yes. Public sources show refurbished, in-stock, core exchange, and warranty-backed listings for A20B-8101-0281, which is consistent with the way important CNC main boards are handled in service and replacement channels.

Q5: What should be checked before ordering?

Check the installed part number, confirm the control platform is 0iC / ZERO i-C, and verify that the original main board is A20B-8101-0281.

Those are the main compatibility points supported by the public listings for this model.