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| Place of Origin | JAPAN |
| Brand Name | FANUC |
| Certification | CE ROHS |
| Model Number | A20B-2100-0741 |
The FANUC A20B-2100-0741 is a control board for Alpha i servo amplifiers, specifically identified as a 2-axis servo control board for SVM2 applications.
It is tied to the A06B-6114 Alpha i servo amplifier family, which makes it a board for the servo-amplifier control layer rather than a general motherboard or panel board.
This board sits in a more focused role than a general CNC system PCB.
It belongs to the control side of the servo amplifier, where the two-axis amplifier layout, connector arrangement, and control-board compatibility all matter to correct service work.
One parts description specifically notes the board’s Alpha i SVM2 use and identifies board-side connectors such as ENC1, ENC2, CXA2A, CXA2B, and COP10A/COP10B, which reinforces its role inside the amplifier assembly rather than in the wider CNC cabinet.
For maintenance teams, A20B-2100-0741 is most valuable when a two-axis Alpha i servo amplifier remains repairable and the right control board is needed to restore the original amplifier configuration.
In that setting, exact part-number matching is more important than any generic description, because the board has to align with the original SVM2 hardware structure.
| Parameter | Value |
|---|---|
| Part Number | A20B-2100-0741 |
| Brand | FANUC |
| Product Type | Control Board |
| Board Role | Alpha i Servo Control Board |
| Axis Configuration | 2 axes |
| Related Amplifier Family | Alpha i servo amplifier |
| Related Module Type | SVM2 |
| Related Amplifier Example | A06B-6114 |
| Typical Use | Servo amplifier repair and replacement |
The A20B-2100-0741 is best suited to 2-axis Alpha i servo amplifier repair, SVM2 module refurbishment, and service support for machines using A06B-6114 amplifier hardware. It is particularly useful when the servo amplifier itself is still worth repairing and the correct control board is needed to restore the original two-axis configuration.
It also fits board exchange programs, legacy FANUC servo maintenance, and spare-parts stock for Alpha i amplifier service.
In practical repair work, it is most relevant when the fault has been narrowed to the control-board side of the amplifier rather than to the power stage, motor, or external machine wiring.
Q1: What is A20B-2100-0741 used for?
It is used as a 2-axis Alpha i servo control board for SVM2 amplifier applications, including the A06B-6114 amplifier family.
Q2: Is this a complete servo amplifier module?
No. It is the control board inside the servo amplifier assembly, not the full amplifier module. That distinction matters because the board is only one part of the full servo drive hardware.
Q3: Why is the 2-axis designation important?
Because the board is intended for a 2-axis amplifier layout. In service work, axis count affects compatibility, connector use, and amplifier configuration, so it should not be treated as a universal Alpha i board.
Q4: What should technicians check before replacing it?
They should confirm the part number, verify the amplifier model, inspect the connector area, and make sure the fault is not coming from the power section, feedback path, or external servo wiring.
A board-level replacement makes the most sense after the amplifier assembly has been diagnosed as a whole.
Q5: Why is exact part matching critical for this board?
This board is tied to a specific Alpha i SVM2 two-axis amplifier layout. Boards that look similar can still belong to different axis counts or amplifier families, so matching A20B-2100-0741 exactly is the safer repair approach.
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