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Mitsubishi Servo Drive Repair Services

ISO 9001:2015 Certified Quality

Our certified process ensures consistent quality and reliable repairs every time.

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2-Year Repair Warranty

We stand behind our repairs with an extensive 2-year warranty on parts and labor for your peace of mind.

Fast Turnaround Time

Our efficient process and large parts inventory help minimize your operational downtime.

Expert Component-Level Repair

We find and replace individual failed components, offering a more affordable and effective repair than full replacement.

Free, No-Obligation Quote

Send us your item for a free evaluation and receive a detailed repair quote with no commitment required.

Mitsubishi Servo Drive Repair Services

Is your Mitsubishi servo drive malfunctioning and disrupting your critical operations? Roc Industrial LLC specializes in providing fast, reliable, and expert Mitsubishi servo drive repair services. We understand the importance of minimizing downtime, and our experienced technicians are dedicated to getting your equipment back up and running quickly. Servo drives are essential components in various automated systems, controlling the precise movement of motors in applications like robotics, CNC machines, and packaging equipment. Trust Roc Industrial LLC to deliver the highest quality repair services for your Mitsubishi servo drives.



About Mitsubishi Servo Drives

Mitsubishi Electric is a global leader in automation technology, renowned for its high-performance and reliable servo drives. Mitsubishi servo drives are integral to a wide array of industrial applications, providing precise motion control for enhanced productivity and efficiency. These drives are designed to seamlessly integrate with Mitsubishi's extensive range of PLCs, HMIs, and other automation components, creating comprehensive solutions for complex automation challenges.


Mitsubishi servo drives are widely used in industries such as CNC machining, robotics, packaging, printing, and material handling. Their robust design and advanced control algorithms ensure accurate and consistent performance, even in demanding environments. The MELSERVO series, in particular, has earned a reputation for its exceptional reliability and advanced features, making it a preferred choice for manufacturers worldwide. Roc Industrial LLC has extensive experience servicing and repairing the MELSERVO series and other Mitsubishi servo drive models.



Supported Models & Series

We repair a wide range of Mitsubishi servo drive models and series, including but not limited to:

  • MR-J2S Series

  • MR-J3 Series

  • MR-J4 Series

  • MR-JE Series

  • MR-JN Series

  • MR-C Series

  • MR-E Series

  • MELSERVO-J2S Series

  • MELSERVO-J3 Series

  • MELSERVO-J4 Series

  • SSCNET III/H compatible drives

  • CC-Link compatible drives

  • Legacy Mitsubishi Servo Drives (contact us for specific models)


Common Mitsubishi Servo Drive Problems We Repair

Mitsubishi servo drives, while known for their reliability, can experience various issues over time. These problems can lead to decreased performance, system downtime, and costly repairs. Roc Industrial LLC is equipped to diagnose and repair a wide range of common Mitsubishi servo drive failures.

  • No Output: The servo drive fails to provide power to the motor, resulting in a complete standstill. This can be caused by internal component failures, power supply issues, or faulty wiring.

  • Overvoltage/Undervoltage Errors: Fluctuations in the input voltage can damage sensitive components within the servo drive, triggering error codes and preventing operation.

  • Communication Errors: Loss of communication between the servo drive and the controller (PLC or CNC) can disrupt the entire system. This can be due to faulty communication cables, network issues, or problems with the drive's communication module.

  • Overheating: Excessive heat can damage internal components and lead to premature failure. Overheating can be caused by inadequate cooling, excessive load, or internal component malfunctions.

  • Blown Fuses: Repeatedly blown fuses indicate a more serious underlying problem, such as a short circuit or component failure within the servo drive.

  • Encoder Faults: The encoder provides feedback on the motor's position and speed. Encoder faults can result in inaccurate positioning, erratic movements, or complete failure of the servo system.

  • Motor Stalling: The motor stops unexpectedly, often accompanied by an error message. This can be caused by overload, encoder issues, or problems with the drive's control circuitry.

  • Positioning Errors: Inaccurate or inconsistent positioning can be caused by encoder problems, drive calibration issues, or mechanical problems within the system.

  • Drive Parameter Corruption: Loss or corruption of stored parameters can lead to unpredictable behavior and system malfunction.

  • Internal Component Failure: Failures of IGBTs, capacitors, resistors, and other internal components.


Our Mitsubishi Servo Drive Repair Process

Roc Industrial LLC follows a meticulous and comprehensive repair process to ensure the highest quality Mitsubishi servo drive repair services. Our goal is to restore your equipment to optimal performance and minimize downtime.

  1. Free Evaluation and Quote: Contact us with details about your faulty Mitsubishi servo drive. We offer a free evaluation to determine the extent of the damage and provide you with a detailed repair quote.

  2. Shipping Instructions: Once you approve the quote, we will provide you with clear and concise shipping instructions to ensure your servo drive arrives safely at our repair facility. We recommend using appropriate packaging materials to prevent further damage during transit.

  3. Diagnosis Using Specialized Test Equipment: Our experienced technicians utilize advanced diagnostic tools and techniques to pinpoint the root cause of the problem. We thoroughly test all critical components to identify any hidden issues that may affect performance.

  4. Component-Level Repair and Replacement: We perform component-level repairs whenever possible, replacing faulty components with high-quality replacements. Our extensive inventory of parts allows us to expedite the repair process and minimize downtime. We use only OEM-quality or better components.

  5. Load Testing and Quality Checks: After the repair is complete, we subject the servo drive to rigorous load testing to ensure it meets or exceeds original performance specifications. We conduct thorough quality checks to verify that all functions are working correctly and that the drive is operating reliably.

  6. Warranty-Backed Return and Support: We stand behind our work with a comprehensive warranty on all repairs. If you experience any issues after the repair, simply contact us, and we will provide prompt and efficient support.


Nationwide Repair Services

Roc Industrial LLC provides Mitsubishi servo drive repair services to customers nationwide. We understand that downtime can be costly, and we are committed to providing fast and efficient repair services regardless of your location. Whether you are in New York, Los Angeles, Chicago, Houston, or Dallas, we can help.


We offer fast shipping options and quick turnaround times to minimize disruption to your operations. Our streamlined repair process and extensive inventory of parts allow us to complete most repairs within a few days. Contact us today to learn more about our nationwide repair services.



Why Choose Roc Industrial LLC?

When it comes to Mitsubishi servo drive repair, Roc Industrial LLC is the trusted choice for businesses across the country. We offer a unique combination of experience, expertise, and customer service that sets us apart from the competition.

  • 30+ Years of Experience: With over three decades of experience in industrial electronics repair, we have the knowledge and expertise to handle even the most complex Mitsubishi servo drive repairs.

  • Warranty-Backed Repairs: We stand behind our work with a comprehensive warranty on all repairs, giving you peace of mind and assurance of quality.

  • Thousands of Parts in Stock: Our extensive inventory of parts allows us to expedite the repair process and minimize downtime.

  • Fast Turnaround, Often Same-Day: We understand the importance of minimizing downtime, and we offer fast turnaround times, often completing repairs on the same day.

  • ISO-Certified Repair Processes: Our repair processes are ISO-certified, ensuring the highest standards of quality and consistency.

  • Exceptional Customer Support: We are committed to providing exceptional customer support throughout the entire repair process. Our friendly and knowledgeable staff is always available to answer your questions and address your concerns.

Don't let a faulty Mitsubishi servo drive slow down your operations. Contact Roc Industrial LLC today for a free evaluation and fast, reliable Mitsubishi servo drive repair.

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