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Part Details


FANUC parts >> A06B-6079-H203 SERVO AMP MODULE ALPHA-20/20


Part Number: A06B-6079-H203

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

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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 FANUC Servo Amp Module Alpha 20/20 at your shop is one of the best in the business. Like all servo amps, though, internal parts can fail and leave you at a standstill. Fortunately, Tri Star CNC Services is here to give you quick turnaround on what we sincerely believe to be the best FANUC repair service available.

The replacement parts we use are all OEM-grade or better. While we have your unit, we do a thorough cleaning to remove any dust buildup that might cause problems for you down the road. We also replace any electrical parts known to have a high failure rate - at no additional cost to you. Finally, we thoroughly test your unit to ensure it performs to FANUC's original specifications.

Quality work, quick turnaround and the best guaranty in the business on FANUC Alpha 20/20 Servo Amp modules - it's no wonder so many shops depend on Tri Star CNC Services.

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 CNC repair technicians at Tri Star CNC for repair of your A06B-6079-H203 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.

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