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| Place of Origin | JAPAN |
| Brand Name | FANUC |
| Certification | CE ROHS |
| Model Number | A20B-8200-0540 |
The A20B-8200-0540 is a FANUC main PCB in the A20B-8200 family. Listings identify it as 0i-D MAIN PCB A0, and other seller pages also describe it as a PCB CPU board / motherboard for the same model number.
That places it firmly in the main-board category of the CNC control rather than in the I/O, display, or accessory-board section.
As a main PCB, this model belongs to the central hardware structure of the controller.
In practical service work, replacing it with the same model helps preserve the original control platform and the same board-family arrangement already present in the machine.
| Parameter | Value |
|---|---|
| Part Number | A20B-8200-0540 |
| Manufacturer | FANUC |
| Product Type | Main PCB / CPU Board / Motherboard |
| Product Series | A20B-8200 |
| Description Seen in Listings | 0i-D MAIN PCB A0 |
| Additional Listing Terms | PCB CPU board, motherboard |
| Service Note Seen in Listings | Pricing or quoting may vary if fully populated |
This board is suitable for installed FANUC 0i-D CNC systems where the controller already uses the A20B-8200-0540 main-board structure.
It is especially relevant in main-board replacement, controller repair, and refurbishment where the original CNC platform must remain unchanged.
Before ordering, confirm the installed board code, verify that the control platform is 0i-D, and make sure the original board is A20B-8200-0540 in the same main-board position.
If the installed board is fully populated, quote or service conditions may differ, so that detail is worth checking in advance.
Q1: What kind of board is A20B-8200-0540?
It is a FANUC main PCB for the 0i-D control family. Listings describe it as 0i-D MAIN PCB A0, and some also classify it as a CPU board or motherboard for the same model.
Q2: Why is “0i-D Main PCB A0” important?
Because that description identifies both the control family and the board role. On a CNC main board, the control family is one of the most important compatibility points, and the A0 designation helps distinguish it from nearby board variants.
Q3: Is this a core control board?
Yes. The model is consistently described as a main PCB, which means it belongs to the core control layer of the CNC system rather than to a peripheral board position.
Q4: Why does exact part-number matching matter on this board?
Because the main PCB defines the control platform, internal hardware structure, and board-family layout of the machine.
Replacing it with a different board can affect compatibility and serviceability, even when the boards appear similar.
Q5: What should be checked before buying?
Check the installed board code, confirm the control platform is 0i-D, and verify that the original main board is A20B-8200-0540. If the installed board carries all optional population, that should also be noted before ordering or requesting service.
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