Brother MFC4000ML

• Code: 84
• Description: Paper jam. The paper ejection sensor remains ON.

• Code: 88
• Description: Paper jam. Even after the registration sensor has gone OFF, the paper ejection sensor still stays OFF.

• Code: 8B
• Description: Overheating error (Thermistor heat error)

• Code: A1
• Description: Top cover opened.

• Code: A2
• Description: Document too long to scan.

• Code: A3
• Description: Document not detected by the document rear sensor.