[Servo board XX] (Power regeneration control board (No. XX)) DC power supply voltage 5V abnormality. (for E0x series controllers)

Error handling: Motor power OFF.
Error reset: Possible.

Content: The 5V supply on the power regeneration control board is outside the rated value.

Main cause: The power regeneration control board is faulty.

Countermeasures: Replace the power regeneration unit.