LIMITED TIME ONLY for new customers: 15% off your first repair order!

Part Details

A06B-6080-H306 ALPHA SERVO AMP 12/20/40

FANUC parts >> A06B-6080-H306 ALPHA SERVO AMP 12/20/40

Part Name: ALPHA SERVO AMP 12/20/40

Part Number: A06B-6080-H306

Contact Us

For parts repair or replacement, please fill out the form below and we’ll get back to you as soon as possible.

upload pdf

* Indicates a Required Field

Exchange Price


Non return of a repairable exchange part within 15 days will result in an additional invoice for the above exchange price.

Repair Price


Turnaround times for standard repairs are based on workload. Please contact Tri Star CNC services for emergency repair requirements.
Please contact Tri Star CNC Services to place an order.


The Alpha Servo Amp 12/20/40 is a great CNC amp, but at some point its power and transistor modules, ICs and capacitors will need to be replaced. Not because they're substandard in any way, simply because there is just no way to make these components last forever.

When you need to get your FANUC servo amp back in the game quickly, count on Tri Star CNC Services. Besides a staff of repair technicians with extensive experience at bringing FANUC servo amps back to life, we stock replacement parts just as good, if not better, that the original OEM parts. You can send us your broken unit for repair, or send it for credit towards a fully refurbished unit. Or if you know what part has failed in your unit, you can order a replacement.

Our service includes thoroughly cleaning the inside of the unit to remove any dust buildup which could cause overheating. We also replace any electrical components known to have a high-failure rate - at no cost to you. Then we fully test the unit to ensure it works as well as the day it left the FANUC factory.

Alarm & error codes

Tri Star CNC Services can provide you with more information on the meaning of your alarms. We will provide a fault diagnosis and a dependable 1-year warranty if you require FANUC servo repairs - or a new FANUC servo amplifier module or FANUC DC servo unit. Give us a call - phone support is FREE and we'll clearly define your options for parts repair or replacement:

Alarm CodeDescription
0 Unit is not ready.
- (dash) Unit is not ready and could be related to the unit or machine side cause.
1 DC voltage of the main circuit power supply is abnormally high.
2 Inverter: control power supply undervoltage.
5 Average regenerative discharge energy is too high (too frequent acceleration/deceleration)–The transformer overheats.
6 Inverter:overheat
8 Abnormal current alarm (L axis)
8. (dot) Inverter: IPM alarm (L axis)
9 Abnormal current alarm (M axis)
9. (dot) Inverter: IPM alarm (M axis)
A Abnormal current alarm (N axis)
A. (dot) Inverter: IPM alarm (N axis)
b Abnormally high current in the L–and M–axis motors
d Abnormal current alarm (N axis)
L FSSB communication error
P Communication error between amplifier and module
U FSSB communication error




Contact trained CNC repair technicians at Tri Star CNC for expert repair of your A06B-6080-H306 FANUC Alpha servo amplifier.

Parts & Repair Warranty Information

Exchange parts and repaired parts include a 1-year warranty. Tri Star CNC, LLC warrants the COMPLETE ASSEMBLY REPAIR – not just the parts and labor.

Get more details on our warranty and please contact us for further support.

Contact Us

For parts repair or replacement, please fill out the form below and we’ll get back to you as soon as possible.

upload pdf

* Indicates a Required Field
Call now for FREE phone support
FREE Phone Support