256202/356202/DB8A (Head Drive Board Failure (Overvoltage) Occurred)

Error contents
  • A power system overvoltage was detected on the CH83 DRV-H Board.
Suspected cause
  • CH83 DRV-H Board failure
  • The FFC connecting the CH83 DRV-H Board and the CH83 Main-B Circuit Board has shorted.
Parts/Components to be checked
  1. CH83 DRV-H Board failure
  2. CH83 Main-B Board - CH83 DRV-H Board FFC
Troubleshooting
StepConfirmation points and methodsPageYESNO
1

Turn power OFF/ON

Does the product recover from the error?

---EndGo to step 2
2

Replace the CH83 DRV-H Board

Does the product recover from the error?

CH83 DRV-H BoardEndGo to step 3
3

Check the connection status of the FFC connecting the CH83 DRV-H Board and the CH83 Main-B Circuit Board

  • Check the connection status of the FFC connecting the CH83 DRV-H Board and 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 the FFC connecting the CH83 DRV-H Board and the CH83 Main-B Circuit Board, and the problem is not resolved even after reconnection, then replace the CH83 Main-B Board - CH83 DRV-H Board FFC.

Does the product recover from the error?

CH83 Main-B Board - CH83 DRV-H Board FFCEndEscalate to person in charge