• Code: F1-50
• Description: Main unit - Finisher combination error
• Causes: The finisher which is not supported by the main unit model is installed. Finisher control PWB trouble.
• Remedy: Install a proper finisher. Replace the finisher control PWB.

• Code: F1-95
• Description: Paper exit option configuration error
• Causes: The paper exit option configuration is improper.
• Remedy: Install a proper option.

• Code: F2-39
• Description: Process thermistor trouble
• Causes: Process thermistor trouble. Process thermistor harness connection trouble. PCU PWB trouble.
• Remedy: Replace the process thermistor. Check connection of the process thermistor harness and the connector. Replace the PCU PWB.

• Code: F2-40
• Description: Toner density sensor trouble
• Causes: Toner density sensor output abnormality. Sensor connector and harness connection trouble. Developing unit trouble. PCU PWB trouble.
• Remedy: Replace the toner density sensor. Check connection of the sensor connector and the harness. Replace the developing unit. Replace the PCU PWB.

• Code: F2-58
• Description: Temperature/humidity sensor trouble (HUD_M/TH_M)
• Causes: Temperature/humidity sensor trouble. Process humidity sensor harness and connector connection trouble PCU PWB trouble.
• Remedy: Replace the temperature/humidity sensor. Check connection of the temperature/humidity sensor harness and the connector. Replace the PCU PWB.

• Code: F2-64
• Description: Toner supply operation trouble
• Causes: Toner motor trouble. Toner density sensor trouble. Connector/harness trouble. PCU PWB trouble. Toner cartridge trouble. Developing unit trouble.
• Remedy: Replace the toner motor. Replace the toner density sensor. Connector and harness check. Replace the PCU PWB. Replace the toner cartridge. Replace the developing unit.

• Code: F2-70
• Description: Improper toner cartridge detection
• Causes: An improper toner cartridge is inserted. (The main unit detects a toner cartridge of a different specification.) Toner cartridge trouble. PCU PWB trouble.
• Remedy: Replace the toner cartridge. Replace the PCU PWB.

• Code: F2-74
• Description: Toner cartridge CRUM error
• Causes: Toner cartridge (CRUM) trouble. PCU PWB trouble. Connector and harness trouble between PCU PWB and toner cartridge
• Remedy: Replace the toner cartridge. Replace the PCU PWB. Check the connector and the harness between the PCU PWB and the toner cartridge.