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How to Fix Common Yaskawa Servo Alarm Codes A10 A41 A71

By Jennifer Zhang June 5th, 2026 4 views
Yaskawa SERVOPACK servo drives frequently pop up A10 overcurrent, A41 encoder fault, A71 overvoltage alarms during machine operation, causing entire production line shutdown.
This guide breaks down real causes from wiring damage, encoder breakdown, motor coil short circuit to driver aging. We share low-cost DIY maintenance solutions and tell when you need to replace original Yaskawa spare parts or whole servo unit.
If encoder is completely burnt and cannot be repaired, replacing a full servo set is the most efficient solution. Many customers pick SGM7J-04AFC6S servo kit for small automation equipment replacement due to sufficient spot inventory and fast delivery.
For burned stator coil issues on old Sigma5 units, repair costs often exceed half of a new servo price; our stocked SGMGV-09ADC6C Sigma5 servo motor is a cost-effective drop-in replacement without extra cabinet modification.

If you cannot confirm damaged components after inspection, you can browse our full-range Yaskawa servo stock including SGM7A-10AFA61 1KW servo to get matching replacement models.
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