Connection MAIN-B Error
Error code
- 100048 Connection MAIN-B Error
Occurrence condition
- A communication failure was detected between the Main Board and SCN Board.
- A communication failure was detected between the SCN Board and ADF Board.
Assumed cause
SCN Board failure
Failure of the connection harness (MCU-SCN 20-pin)
Failure of the connection harness (Main-SCN USB)
ADF Board failure
- Failure of the connection harness (SCN-ADF 22)
Failure of the connection harness (SCN-ADF USB)
MCU board failure
Failure of the Main board
Related parts
- SCN Board
- 20-pin harness connecting the MCU Board and SCN Board
- USB harness connecting the Main Board and SCN Board
- ADF Board
- 22-pin harness connecting the SCN Board and ADF Board
- USB harness connecting the SCN Board and ADF Board
- MCU Board
- Main Board
Troubleshooting
Step |
Confirmation and action |
Yes |
No |
|---|---|---|---|
1 |
Check connection of cables
Reconnect the cables. Does the error still occur? |
Go to step 2 |
End |
| 2 | Check connection of cables
Reconnect the cables. Does the error still occur? |
Go to step 3 | End |
| 3 | Check connection of cables
Reconnect the cables. Does the error still occur? |
Go to step 4 |
End |
| 4 | Replace the following parts in sequence and check whether the symptom recurs after each replacement. (Because time is required to replace the ADF Board and SCN Board, replace the ADF/SCN Unit to shorten repair times.) (1) ADF Board (2) SCN Board (3) ADF/SCN Unit (4) MCU Board (5) Main Board Does the error still occur? |
Contact EPSON Local Service Representatives | End |