Brother MFC9420CN

• Code: 2C
• Description: Fuser temperature low error at warming-up.
• Causes: Contact Failure of Harness Connector Low Input Voltage
• Remedy: Contact Failure of Harness Connector Confirm the connection of Harness Connector Low Input Voltage Connect the printer with the rated voltage source.

• Code: 2D
• Description: Fuser temperature low error
• Causes: Low Input Voltage
• Remedy: Low Input Voltage Connect the printer with the rated voltage source.

• Code: 2E
• Description: Fuser temperature high error
• Causes: Breakdown of Heater On/Off Circuit Breakdown of Temp Control Circuit
• Remedy: Breakdown of Heater On/Off Circuit Replace the LV Power Supply PCB Breakdown of Temp Control Circuit Replace the engine controller board

• Code: 2F
• Description: Fuser ACOFF error.
• Causes: Breakdown of Heater On/Off Circuit Breakdown of Temp Control Circuit
• Remedy: Breakdown of Heater On/Off Circuit Replace the LV Power Supply PCB Breakdown of Temp Control Circuit Replace the engine controller board

• Code: 30
• Description: Erase LED error
• Causes: Erase lamp defective Engine controller board defective
• Remedy: Erase lamp defective Replace the erase lamp Engine controller board defective Replace the engine controller board.

• Code: 31
• Description: Power supply fan error
• Causes: Power supply fan defective Engine controller board defective
• Remedy: Power supply fan defective Replace the power supply fan Engine controller board defective Replace the engine controller board.