SCN Board Cooling Fan failure
Error code
- 931004 SCN Board Cooling Fan failure
Occurrence condition
- SCN Board Cooling Fan failure is detected.
Assumed cause
- Cooling Fan failure
- SCN Board failure
- Failure of the connection harness (MCU-SCN 20-pin)
- MCU board failure
- Failure of the Main board
Related parts
- Cooling Fan
- SCN Board
- 20-pin harness connecting the MCU Board and SCN Board
- MCU Board
- Main Board
Troubleshooting
| Step | Confirmation and action | YES | NO |
|---|---|---|---|
| 1 | Replace the Cooling Fan Adjust the replacement parts, replace the Cooling Fan, and then use the diagnostic function to check the operation of the Cooling Fan. [Adjustment Table for each Replacement Part]
[Diagnostic function]
Check if the Cooling Fan is operating |
End | Go to step 2 |
| 2 | Replace the SCN Board Adjust the replacement parts, replace the SCN Board, and then use the diagnostic function to check the operation of the Cooling Fan. [Adjustment Table for each Replacement Part]
[Diagnostic function]
Check if the Cooling Fan is operating |
End | Go to step 3 |
| 3 | Replace the harness Adjust the replacement parts, replace the 20-pin harness connecting the MCU Board and SCN Board, and then use the diagnostic function to check the operation of the Cooling Fan. [Adjustment Table for each Replacement Part]
[Diagnostic function]
Check if the Cooling Fan is operating |
End of work | Go to step 4 |
| 4 | Replace the MCU board Adjust the replacement parts, replace the MCU Board, and then use the diagnostic function to check the operation of the Cooling Fan. [Adjustment Table for each Replacement Part]
[Diagnostic function]
Check if the Cooling Fan is operating |
End |
Go to step 5 |
| 5 | Replacement of Main Board Adjust the replacement parts, replace the Main Board, and then use the diagnostic function to check the operation of the Cooling Fan. [Adjustment Table for each Replacement Part]
[Diagnostic function]
Check if the Cooling Fan is operating |
End | Contact EPSON Local Service Representatives |