[Power sequence board] DC power supply abnormality (3.3V). (for E0x series controllers)

Error handling: Controller power OFF.
Error reset: Not possible.

Description: The 3.3V power supplied from the control power supply AVR to the power sequence board is outside its rated value.

Main causes:

1. Incorrect voltage adjustment of the control power AVR.

2. A problem with the control power AVR.

3. A problem with the power sequence board.

Countermeasures:

1. Check the 3.3V supply between the test pins on the power sequence board, and adjust it to the range of 3.25-3.35V.

2. Replace the AVR.

3. Replace the power sequence board.