Brother MFC-7450

1-19
Confidential
■ Error code A3
Document rear sensor is not turned on when feeding the document.
■ Error code A5
Fax scanning error (First warning only)
■ Error code A6
Fax scanning error (After the A5 error occurs, the same problem occurs again even after
turning the power off and on.)
■ Error code AD
DMA transfer error
Document Jam.
Clear the scanner jam, then press the Stop Key.
User Check
• Check if the document is jammed in the ADF. If it is jammed, remove it.
Step Cause Remedy
1
Document rear actuator not
operating smoothly or catching in
some position.
Ensure smooth operation and that there is
no catching of document rear actuator.
2 Document rear sensor failure. Replace the document rear sensor.
3 ADF motor failure Replace the ADF motor.
Scan Unable A5
Remove the original document. Turn the power off, then on again.
Step Cause Remedy
1
Scanning failure Turn the power switch off and on. Then, try
scanning again.
Scan Unable A6
Remove the original document. Turn the power off, then on again.
Step Cause Remedy
1 FB unit failure Replace the FB unit.
2 Main PCB failure Replace the main PCB ASSY.
Scan Unable AD
Remove the original document, Turn the power off, then on again.
Step Cause Remedy
1 FB unit failure Replace the FB unit.
2 Main PCB failure Replace the main PCB ASSY