Yaskawa FSP Amplifier - Manual (Page 271)

FSP Amplifier User’s Manual Chapter 9: Inspection, Maintenance, and Troubleshooting
9-6
„ A.03: Main Circuit Detection Error
Display and Outputs
Alarm Outputs
Alarm Code Output
ALO1 ALO2 ALO3
ALM Output
OFF OFF OFF OFF
Note: OFF: Output transistor is OFF (alarm state).
Status and Remedy for Alarm
Cause of the Problem Solution
A
Circuit board (1PWB or 2PWB)
defective.
Replace servo amplifier.
At Power ON A