[Servo board XX] A power abnormality signal has been input from the power sequence board. (for E0x series controllers)

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

Description: When the power sequence board detects an abnormality in the external AC supply to the control power AVR, the DC supply, or the main CPU board watchdog, it forwards this error signal to the servo board, which detects the abnormality.

Main causes:

1. A problem with the harness between the motherboard and the servo board.

2. A problem with the power sequence board.

3. A problem with the servo board.

4. The motherboard is faulty.

5. A problem with the main CPU board.

Countermeasures:

1. Check the harness between the motherboard (X206) and the servo board (X502).

2. Replace the power sequence board.

3. Replace the servo board.

4. Replace the motherboard.

5. Replace the main CPU board.