Estimated abnormal parts:
- PB control board (PBCB)
- Control program
- Deactivate the sub-power switch and unplug the power plug. Restart the main body after 10 seconds.
- Check the connector connection and the wiring between he main body and each option, and repair it when there is any abnormality.
- Check the connector connection of the control board and the drive board in each option, and repair it when there is any abnormality.
- Rewrite the firmware of the option.
- Replace the control board of the option corresponds to the malfunction code.
