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| Place of Origin | JAPAN |
| Brand Name | FANUC |
| Certification | CE ROHS |
| Model Number | A20B-1006-0480 |
Part Number: A20B-1006-0480
Manufacturer: FANUC Corporation (Japan)
Product Type: PCB Board
Board Series: A20B-1006
Compatible Systems: FANUC CNC and automation systems
The A20B-1006-0480 is a printed circuit board from FANUC's A20B-1006 series. FANUC's A20B-1006 series covers interface, connection, and functional PCBs used within CNC controllers and associated automation systems.
These boards handle specific signal routing, power distribution, and interface functions that keep the controller's modular architecture working as a coherent system.
FANUC engineers its CNC platforms around a modular board architecture.
Individual boards each perform defined functions — CPU processing, memory storage, servo control, I/O management, display driving, and the interface connections that allow these boards to communicate and interoperate.
The A20B-1006-0480 occupies a specific role in this architecture. It provides the signal paths and electrical interface its position in the system requires.
This board is manufactured in Japan.
FANUC's Japan-origin boards meet the company's production standards for component quality, board construction, and environmental compliance.
They are designed for the long service intervals typical of CNC machine tool installations.
| Parameter | Value |
|---|---|
| Part Number | A20B-1006-0480 |
| Manufacturer | FANUC Corporation |
| Product Type | PCB Board |
| Board Series | A20B-1006 |
| Compatible Systems | FANUC CNC and automation systems |
| Origin | Japan |
| Operating Temperature | 0 – 55°C |
| Storage Temperature | −20 – 60°C |
| Humidity | 75% RH max (non-condensing) |
| Condition Available | New / Refurbished / Repaired |
FANUC CNC controllers are built from collections of specialised boards, each performing a defined function. This modular approach allows individual boards to be replaced independently when they fail.
It also allows specific functions to be added or removed by installing or removing the corresponding board.
The A20B-1006 series PCBs participate in this architecture by providing specific interface and functional capabilities at their installed positions in the controller.
The functional purpose of any individual A20B-1006 variant is defined by its suffix number.
Different suffix numbers in the series correspond to different functions — some variants serve as connection or backplane boards, others provide specific interface functions for peripheral devices or subsystem integration.
The -0480 suffix identifies this board's specific function within the series.
Every board in a FANUC CNC controller must function correctly for the system to operate as designed. If any board develops a fault, the functions it provides are lost.
The machine may continue to operate in some capacity, or it may stop entirely, depending on which board is affected.
Correct part number identification is critical for PCB boards. Two A20B-1006 variants may look physically similar but serve different functions.
A board with an incorrect suffix will not provide the correct signals and connections for the position it occupies.
Before sourcing a replacement A20B-1006-0480, confirm the part number from the label on the installed board.
The label is the authoritative identifier. Cross-reference against the machine's electrical documentation if available.
Visual inspection of the board or general knowledge of the machine type is not a reliable substitute for label verification.
All FANUC PCBs contain electrostatic-sensitive components. Handle with anti-static precautions: wear a grounded wrist strap, handle boards by the edges, and avoid contact with component leads or circuit traces. Store in anti-static packaging.
Keep away from humid environments and temperature extremes.
FANUC boards produced in Japan are designed for industrial service life — they are robust. But they are not immune to electrostatic discharge damage from improper handling, which can cause latent failures that appear only after the board is installed and powered.
Q1: How do I confirm the A20B-1006-0480 is the correct replacement for my machine?
Check the label on the board currently installed in the machine. Match the full part number — A20B-1006-0480 — exactly. Cross-reference against your machine's electrical documentation or the FANUC hardware manual for your controller type.
The part number on the label is the correct identifier. Do not rely on visual appearance alone.
Q2: Can the A20B-1006-0480 be tested before installation?
Most FANUC PCBs can only be functionally tested within the controller system they are designed for.
Standalone testing outside the system is not practical for most boards. Reputable suppliers test boards under power within a compatible controller before shipping.
Ask for test documentation when sourcing a used or refurbished unit.
Q3: The machine started showing intermittent faults that do not always reproduce. Could a PCB like this be the cause?
Intermittent faults that do not consistently reproduce are often connector-related rather than board-related. Before replacing a board, inspect all connectors on the suspect board — confirm they are fully seated and that connector contacts show no oxidation or damage.
Intermittent contact is common in older machines as connectors age.
Reseating connectors eliminates this as a cause before committing to board replacement.
Q4: How should the A20B-1006-0480 be stored as a spare?
Store in anti-static packaging in a cool, dry location. Avoid exposure to humidity, direct sunlight, and temperature extremes.
The board contains no battery and no time-degrading active components under storage conditions.
With correct storage, the board retains its functional state indefinitely. Inspect connectors for oxidation before installation after extended storage.
Q5: What is the typical lead time for sourcing this board?
Lead time depends on stock availability. New production is not always available for legacy FANUC boards — supply comes from authorized distributor surplus stock or tested refurbished units.
Suppliers who maintain active FANUC PCB inventory can typically ship within days for in-stock items.
If the board is needed for a critical production machine, having a tested spare in-house eliminates lead time from future repair scenarios.
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