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| Place of Origin | JAPAN |
| Brand Name | FANUC |
| Certification | CE ROHS |
| Model Number | A20B-8200-0841 |
The A20B-8200-0841 is a main PCB in the A20B-8200 family. It is identified as 0i-D MAIN PCB A1U, which places it in the control-core position of the CNC rather than in the display, communication, or peripheral-board layer.
Listings for this model also show core exchange required and note that pricing treatment may differ when the board is fully populated, which is typical of high-value main-board service channels.
From a maintenance standpoint, this board should be treated as a platform-level replacement part.
A main PCB carries the controller’s central hardware role, so exact board-code continuity matters much more than broad family similarity.
Using the same model helps preserve the original control architecture, board-to-board compatibility, and the machine’s installed hardware structure.
| Parameter | Value |
|---|---|
| Part Number | A20B-8200-0841 |
| Manufacturer | FANUC |
| Product Type | Main PCB / Main Board |
| Product Series | A20B-8200 |
| Board Role | 0i-D Main PCB A1U |
| Control Context | 0i-D CNC platform |
| Core Exchange | Required |
| Repair Status | Not offering at this time |
| Service Note | No flat-rate pricing if fully populated |
This board is suitable for installed FANUC 0i-D CNC systems where the controller already uses the A20B-8200-0841 main-board position.
It is especially relevant in controller repair, main-board replacement, refurbishment, and lifecycle support where the original control platform needs to remain unchanged.
Before ordering, confirm the installed board code directly on the hardware and verify that the machine uses the A1U main-board version in the 0i-D platform. Because this is a control-core board, exact model continuity is essential.
It is also wise to confirm whether the existing board is fully populated before requesting pricing or exchange service.
Q1: What kind of board is A20B-8200-0841?
It is a 0i-D Main PCB A1U. That means it belongs to the central control layer of the CNC and is not a peripheral board such as a display card, fieldbus interface, or simple add-on module.
Q2: Why is the “A1U” designation important?
The A1U suffix helps distinguish this board from other nearby 0i-D main-board variants.
In service work, that difference matters because main-board revisions should remain aligned with the exact installed controller hardware already in the machine.
Q3: Is this a platform board or an accessory board?
It is a platform board. A main PCB defines the control platform itself, so it carries a broader and more critical role than accessory boards or option cards.
Q4: Why does exact model matching matter so much here?
Because a main board determines the controller family, internal board layout, and hardware-level compatibility.
Replacing it with a different model can affect the machine at the platform level, not just at one optional function point.
Q5: What should be checked before buying?
Check the installed board label, confirm the control platform is 0i-D, verify the part number is A20B-8200-0841, and confirm whether the board is fully populated if pricing or exchange conditions depend on that.
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