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The FANUC A20B-2004-0712 is a power supply wiring board for compatible FANUC CNC equipment. This internal PCB carries power-related wiring, connector interfaces and control paths between sections of the host assembly. It is a board-level component, not a complete enclosed power supply.
A20B-2004-0712 is also listed as a FANUC power board or power PCB control board. Replace it by matching the exact printed number, connectors and installed assembly rather than appearance alone.
A20B-2004-0712 Product Information
| Brand | FANUC |
| Model / MPN | A20B-2004-0712 |
| Product Type | Power supply wiring board / power PCB |
| Primary Function | Internal power-related circuit routing and interconnection |
| Construction | Component PCB with multiple connectors and mounting points |
| Application | Selected FANUC CNC power and control assemblies |
| Supply Scope | PCB assembly shown; complete power unit and host equipment not included |
| Country Marking | Made in Japan on documented original boards |
| Compatibility Key | Exact PCB number, revision, connectors, components and mounting layout |
| Condition | New, refurbished, or used 90% new; subject to stock |
| Testing | 100% tested before shipping; test video available |
| Handling | Normally 1–3 business days |
| Shipping / ETA | DHL, UPS, or FedEx worldwide; typically 3–7 business days |
| Warranty | 1 year for new/refurbished; 3 months for used 90% new |
| Service / Packing | Free technical support; anti-static reinforced packing |
Power Distribution and Interface Function
The A20B-2004-0712 provides fixed electrical paths between its connectors and installed components. Within the complete FANUC assembly, it supports the routing and interface of power-related circuits required by connected modules. Actual input, output and signal assignments are determined by the host unit and machine configuration.
Replacement and Compatibility Checks
Confirm A20B-2004-0712 on the original PCB and compare any revision marking, connector locations, component population, board dimensions and mounting holes. Similar A20B-2004 boards may belong to different assemblies or use different circuit layouts. Do not substitute A20B-2004-0711, A20B-2004-0714 or A20B-2004-0717 without documented approval.
Testing and Installation Notes
REACO CNC checks the part marking, PCB traces, connectors, components, solder joints, mounting points and electrical condition, followed by functional testing in a compatible assembly when available. Before installation, isolate all power, allow stored energy to discharge and inspect the surrounding power unit for damaged connectors, contamination or overheated components.
Related resources: FANUC circuit boards, FANUC drives and power units and FANUC CNC repair services.
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