[Servo board XX] Power supply abnormality signal input from MCXX. (for E0x series controllers)

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

Content: A power abnormality signal has been input from the power supply unit control board (1VH).

Main causes:

1. Incorrect voltage adjustment of the controller power AVR.

2. A problem with the control power AVR.

3. The power supply unit (power supply unit control board) is faulty.

4. A problem with the servo board.

5. A ground fault or short circuit in the 5V power wiring.

6. An open circuit in the harness between the servo board (X503, X504, X505) and power supply unit control board (X304).

Countermeasures:

1. Check the 5V voltage between the test pins on the power sequence board and adjust it to within 5.05 to 5.15V.

2. Replace the AVR.

3. Replace the power supply unit control board.

4. Replace the servo board.

5. Check the 5V power supply wiring for a ground fault or short circuit.

6. Check the wiring between the servo board (X503, X504, X505) and power supply unit control board (X304).