Brother FAX3750

• Code: 77
• Description: Heater thermister short circuit.

• Code: 78
• Description: Heater thermister harness disconnected or broken.

• Code: 79
• Description: Toner thermister disconnected or broken.

• Code: 80
• Description: Paper size setting error.

• Code: 82
• Description: Paper feeding error.

• Code: 83
• Description: Paper jam. The registration sensor remains ON.