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FANUC Servo Amplifier Module | Model: A06B-6077-H106

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.

Initial Fault:This FANUC servo amplifier arrived with the customer reporting Alarm 01 on their CNC machine's controller. This fault indicates an overcurrent condition and prevented the associated axis from moving, halting the machine's operation.


Our Solution:Upon arrival, our technicians powered the unit on our dedicated FANUC test stand and confirmed the Alarm 01 fault. A static test using signature analysis immediately pointed to a short circuit in the main power module.


Disassembly revealed failed IGBTs (Insulated Gate Bipolar Transistors) in the amplifier's output stage. To ensure a robust and reliable repair, we replaced all IGBTs in the module. We also performed a proactive refurbishment of the gate driver board and replaced the main DC bus capacitors, which are known to degrade over time.


Following the component-level repairs, the A06B-6077-H106 was reassembled and connected to a compatible FANUC controller and servo motor on our test stand. We ran the drive through multiple speed and torque routines and performed a full load test to ensure stable operation and proper current draw. The fully tested servo amplifier was then securely packaged and returned to the customer with our comprehensive 2-year repair warranty, ready to be reinstalled and restore their machine's productivity.

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