ISO-certified repairs with a 2-year warranty — technician-verified quotes within 24 hours, nationwide.
Product Description
The Fanuc A20B-8200-0777 is a robust and reliable main printed circuit board (PCB) essential for the operation of Fanuc CNC systems. This meticulously engineered board provides critical functionality, facilitating communication and control within the machine. It is designed for demanding industrial environments, ensuring consistent performance and longevity. The A20B-8200-0777 manages vital processes, contributing to the overall efficiency and precision of automated manufacturing operations. This component is a key element for maintaining optimal system uptime and productivity.
Is Your Device Showing These Signs?
The A20B-8200-0777 Fanuc I/O module commonly experiences issues such as corrupted firmware requiring a reload, failed surface mount capacitors causing communication errors on the CNC machine, and damaged connectors leading to intermittent signal loss. Troubleshooting involves checking power supply voltages, inspecting for physical damage, and verifying proper communication protocols. Repair procedures include replacing faulty capacitors, re-flashing the firmware, and replacing damaged connectors to restore functionality. Addressing these issues ensures optimal performance and prevents CNC machine downtime.
Technical specifications
The Fanuc A20B-8200-0777 is a robust and essential main printed circuit board (PCB) engineered for seamless integration within Fanuc CNC systems. This meticulously designed board serves as the central processing unit, orchestrating and managing critical functions including axis control, program execution, and communication with peripheral devices. Featuring advanced circuitry and high-quality components, the A20B-8200-0777 ensures dependable performance and precise control over complex machining operations. It handles intricate calculations, interprets G-code instructions, and coordinates servo drives to achieve accurate and efficient motion control. The board incorporates diagnostic capabilities, facilitating troubleshooting and minimizing downtime. It is a vital component for maintaining the operational integrity and maximizing the productivity of compatible Fanuc CNC machines. This PCB is rigorously tested to meet stringent quality standards, guaranteeing long-term reliability and optimal performance in demanding industrial environments. The A20B-8200-0777 is essential for any facility relying on Fanuc CNC technology.
Our Repair Process for the
A20B-8200-0777
Our repair process for the A20B-8200-0777 Fanuc I/O module begins with a comprehensive diagnostic evaluation, including power supply voltage checks, thorough physical damage inspection, and communication protocol verification. Identified faulty capacitors are replaced with high-quality components, ensuring stable performance. Corrupted firmware is re-flashed using validated procedures to restore proper operation. Damaged connectors are replaced to eliminate intermittent signal loss and ensure reliable communication. This meticulous approach guarantees the module's functionality is fully restored, minimizing CNC machine downtime and optimizing performance.
Your Guarantee: Warranty & Lifetime Support
Your satisfaction is our top priority, and we confidently stand behind the quality of our repairs. That's why every repair service is covered by our comprehensive 24-month warranty. Furthermore, we offer lifetime phone support – if you have questions or need assistance related to our repair down the road, we're here to help. Our service commitment is straightforward: we guarantee our work, and if you're not satisfied, we will make it right. Learn More about our Repair process.
Comprehensive Repairs You Can Depend On
We take immense pride in the quality and reliability of our work. Our process goes beyond simply fixing the immediate problem. We perform a comprehensive inspection of your main board (or other equipment) and proactively replace components known to be failure-prone or showing signs of potential future failure. Before any item is returned, it undergoes rigorous functional testing to ensure it meets performance specifications and operates flawlessly. Visit our main Repair Services page to learn more.
Save Significantly
Our primary goal is to save you hundreds, or even thousands, of dollars compared to the cost of new equipment replacement. By repairing existing components, we provide an economical solution that is also eco-friendly. At Roc Industrial, our commitment to integrity and community drives our consistent growth and ensures you receive a reliable, cost-effective solution.


Please Note: Roc Industrial operates as an independent service provider and is not an authorized distributor for the manufacturers or brands mentioned. Consequently, the original manufacturer's warranty is not applicable to items repaired or sold by us. Roc Industrial provides its own 2-year warranty on all repair services performed.
Buying Options
To receive a quote within 2 hours, please provide us with the details of your requirements. Our team will promptly review your request and send you a custom offer.
Ships from Rochester, NY