Citizen L432 Servo alarm

[mr1]

I have a Citizen L432 from 1998 with a Mitsubishi meldas 500 control
In the last couple of days the machine has alarmed out with the following
S04 SERVO ALARM : AR 006C S1
EMG EMERGENCY SRV
It happens at intermittent times and at different points in my part program.Does anyone have any suggestions or knowledge of this error code?

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[cogsman1]

6C Main circuit error

The main circuit capacitor in the power supply could not be charged correctly

Replace unit

[Cabron]

I have the same alarm with a L520.
Did you change the power supply and solved the problem ?