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FANUC Servo Repair

FANUC Servo Repair Service – Drives & Amplifiers

In CNC machining, the integrity of the electronic components is everything. When a servo drive/amplifier fails, Tri Star CNC Services provides quick and affordable repair on servo component-level parts. If you discover issues with your servo, Tri Star CNC has got you covered.

Trust Tri Star CNC Services to expertly repair, restore or replace:

  • AC Analog
  • FANUC Alpha, Alpha i series & Alpha is series
  • FANUC AC Digital Series (S, C & D)
  • FANUC DC and DCM Series
  • Beta, Beta i, Beta is series


Free phone support for faulty FANUC Servo drives & amplifiers.

If you are experiencing any issues with your precision CNC machining and suspect an issue with electronic components, contact us today. We provide free phone support to help you determine if your Servo drive is malfunctioning and needs repair.

Tri Star CNC’s technicians have extensive experience repairing and refurbishing FANUC Servo drives. We maintain a well-stocked inventory of parts necessary for overhauling these devices, so you won't have to wait long before we return a working part.

Besides diagnosing and replacing faulty components, we also replace any parts which may be nearing the end of their service life and load test the unit before returning it. We also thoroughly clean all units before sending them back.

Contact us for swift repairs of FANUC servo drives & amplifiers.

Symptoms of a malfunctioning servo drive/amplifier

Servo Drive Amplifier in CNC MachineSince drives and amplifiers are so important in FANUC machinery, it is easy to notice when they are malfunctioning. If maintained, an axis’s control, motor and drive work together with precision and accuracy. When they fail to perform, axes frequently exhibit these errors, among others:

If you notice these issues, call Tri Star CNC for FREE phone support troubleshooting.

FANUC servo error alarm codes

Servo failure can occur for a number of reasons, making the list of possible problems overwhelming to the untrained eye. Even the most detailed explanation in a manual (or in our own list) can be intimidating. If you’re having trouble diagnosing or navigating your machine’s symptoms, Tri Star CNC provides over-the-phone guidance from experts to help you through it.

View our full list of FANUC servo alarms.

How a Servo Drive Works

GE FANUC Servo Repair Services

A servo drive takes the command signal sent from a control panel and amplifies the low power signal up to a level which results in movement of the servo motor. As the servo motor is activated, a sensor reports the status of the motor to the servo drive via a feedback signal. The control compares what the motor is doing with the command it received and alters the voltage frequency going to the motor in order to correct any deviation from the original command.

For more specific information regarding the operation of servo drives, consult our guide on how servo drives work, or contact our experienced professionals at Tri Star CNC at 815-578-9145.

Tri Star CNC Services offers FREE phone tech support

When it comes to servo repair, we understand the need for expert service — and fast. If you believe your servo is malfunctioning, our experienced technicians offer free phone support to help determine the problem and solution. If your equipment ends up needing maintenance, our well-stocked inventory of replacement servo parts means your machine will be up and running in no time.

Contact Tri Star CNC Services for a quote on servo drive and amplifier repairs or availability from our exchange stock.


Call now for FREE phone support
FREE Phone Support