DBA1 (CH83 Main-B Circuit Board Failure (Overvoltage) Occurred)

Step	Confirmation points and methods	Page	YES	NO
1	Check the connection status of the cables connected to the CH83 Main-B Circuit Board Check the connection status of the cables connected to the CH83 Main-B Circuit Board (disconnection, skewed connection, inserted halfway, peeled terminal). If an abnormality is found, reconnect it. If there is an abnormality with cables connected to the CH83 Main-B Circuit Board, and the problem is not resolved even after reconnection, then replace the cables connected to the Main-B Board. Does the product recover from the error?	CH83 Main Board - CH83 Main-B Board FFC CH83 Main-B Board - CH83 DRV-H Board FFC CH83 Main-B Circuit Board	End	Go to step 2
2	Replace the CH83 Main-B Circuit Board Does the product recover from the error?	CH83 Main-B Circuit Board	End	Escalate to person in charge

Step

Confirmation points and methods

Page

YES

Check the connection status of the cables connected to the CH83 Main-B Circuit Board

Check the connection status of the cables connected to the CH83 Main-B Circuit Board (disconnection, skewed connection, inserted halfway, peeled terminal). If an abnormality is found, reconnect it.
If there is an abnormality with cables connected to the CH83 Main-B Circuit Board, and the problem is not resolved even after reconnection, then replace the cables connected to the Main-B Board.

Does the product recover from the error?

End

Go to step 2

Replace the CH83 Main-B Circuit Board

Does the product recover from the error?

End

Escalate to person in charge