ISO-certified repairs with a 2-year warranty — technician-verified quotes within 24 hours, nationwide.
Product Description
The Mitsubishi MELSERVO MR-J3-70BRJ006 is a compact servo amplifier with a 200-230 VAC, 50/60 Hz three-phase power supply (170-253 VAC permissible fluctuation) and a single-phase 170-253 VAC control circuit (30W, +/-5% fluctuation). It features a 24VDC/150mA interface power supply, operates between 0 and +55C, uses force-cooling, has an IP00 rating, includes a built-in dynamic brake, weighs 6.2 kg, and utilizes sine-wave PWM and current control for dynamic motion applications.
Is Your Device Showing These Signs?
The Mitsubishi MR-J3-70BRJ006 servo amplifier commonly requires repair due to issues stemming from overcurrent faults, often triggered by motor cable degradation or incorrect wiring. Technicians address alarms related to encoder feedback malfunctions, necessitating encoder replacement or cable repair. Power supply failures within the drive module are a frequent cause of downtime, demanding component-level repair or complete power module replacement. Overheating issues, resulting from inadequate cooling or environmental factors, lead to thermal faults, requiring fan replacement or heatsink cleaning. Finally, communication errors on the CC-Link interface are resolved through interface card repair or cable replacement, ensuring proper network connectivity.
Technical specifications
The Mitsubishi MELSERVO MR-J3-70BRJ006 is a compact servo amplifier with a 200-230 VAC three-phase power supply and a single-phase 170-253 VAC control circuit. It includes a 24VDC interface power supply, operates in temperatures between 0 and +55C, uses force-cooling, has an IP00 rating, a built-in dynamic brake, weighs 6.2 kg, and uses sine-wave PWM and current control.
Our Repair Process for the
MR-J3-70BRJ006
Our repair process for the Mitsubishi MR-J3-70BRJ006 servo amplifier begins with a comprehensive diagnostic evaluation to pinpoint the root cause of the failure. Overcurrent faults are addressed through thorough inspection and replacement of degraded motor cables, along with verification of correct wiring configurations. Encoder feedback malfunctions necessitate encoder replacement or cable repair to restore proper signal transmission. Power supply failures are resolved through component-level repair or complete power module replacement, ensuring stable power delivery. Overheating issues are mitigated by fan replacement or heatsink cleaning to maintain optimal operating temperatures. Communication errors on the CC-Link interface are corrected through interface card repair or cable replacement, guaranteeing seamless network communication.
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