• Code: F1-51
• Description: Saddle sensor connection trouble
• Causes: Finisher control PWB trouble. Home position sensor trouble. Harness and connector connection trouble.
• Remedy: Use SIM03-02 to check the operations of the guide HP sensor and the push plate lead edge sensor. Check connection from the control PWB to the sensor. Replace the control PWB. Replace the sensor.

• Code: F1-52
• Description: Finisher micro switch trouble
• Causes: Finisher control PWB trouble. Each micro switch trouble. Harness and connector connection trouble.
• Remedy: Use SIM03-02 to check the operations of the front door/upper door open detection and the oscillation guide close detection. Check connection from the control PWB to the sensor. Replace the control PWB. Replace the sensor.

• Code: F2-22
• Description: Discharge lamp trouble (K)
  Contact trouble between the discharge lamp PWB (K) and the PCU PWB. Discharge lamp PWB (K) trouble. PCU PWB trouble.
• Causes: Contact trouble between the discharge lamp PWB (K) and the PCU PWB. Discharge lamp PWB (K) trouble. PCU PWB trouble.
• Remedy: Replace the discharge lamp PWB (K). Check the harness and the connector. Replace the PCU PWB.

• Code: F2-23
• Description: Discharge lamp trouble (C)
  The lamp is kept open for 1 sec from turning on the discharge lamp.
• Causes: Contact trouble between the discharge lamp PWB (C) and the PCU PWB. Discharge lamp PWB (C) trouble. PCU PWB trouble.
• Remedy: Replace the discharge lamp PWB (C). Check the harness and the connector. Replace the PCU PWB.

• Code: F2-24
• Description: Discharge lamp trouble (M)
  The lamp is kept open for 1 sec from turning on the discharge lamp.
• Causes: Contact trouble between the discharge lamp PWB (M) and the PCU PWB. Discharge lamp PWB (M) trouble. PCU PWB trouble.
• Remedy: Replace the discharge lamp PWB (M). Check the harness and the connector. Replace the PCU PWB.

• Code: F2-25
• Description: Discharge lamp trouble (Y)
  The lamp is kept open for 1 sec from turning on the discharge lamp.
• Causes: Contact trouble between the discharge lamp PWB (Y) and the PCU PWB. Discharge lamp PWB (Y) trouble. PCU PWB trouble.
• Remedy: Replace the discharge lamp PWB (Y). Check the harness and the connector. Replace the PCU PWB.

• 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 (K)
• 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.