• Code: SC555
• Description: Pressure roller thermistor error 5: Lamp remains on
  After hot roller reaches warmup temperature, the pressure roller fusing lamp remains for 6 sec. while the hot roller is not rotating.
• Causes: • Thermistor damaged, or out of position • Fusing lamp disconnected, broken

• Code: SC556
• Description: Heating roller thermistor 2 error 5: Lamp remains on
  After hot roller reaches warmup temperature, the pressure roller fusing lamp remains for 6 sec. while the hot roller is not rotating.
• Causes: • Thermistor damaged, or out of position • Fusing lamp disconnected, broken

• Code: SC561
• Description: Hot roller thermistor error 1: Thermistor disconnected
  The temperature measured by the hot roller thermistor does not reach the prescribed warm-up temperature within 100 sec.
• Causes: • Loose connection of the hot roller thermistor • Defective hot roller thermistor • Defective BCU

• Code: SC562
• Description: Hot roller thermistor error 2: Failure to reach warmup temperature
  After the main switch is turned on or the cover is closed, the heating roller temperature does not reach the ready temperature within 2 sec. after the heater switches on. -or- If the roller was below 45°C, the heating roller did not reach the ready temperature 2 sec. after reaching 45°C. Note: Thermistor 2 stops monitoring the temperature once Thermistor 1 detects ready temperature.
• Causes: • Hot roller fusing lamp broken • Defective hot roller thermistor • Defective BCU

• Code: SC563
• Description: Hot roller thermistor error 3: Software - High Temperature
  The thermistor detected a temperature over 250°C 10 times within 1 sec.
• Causes: • TRIAC short • IOB defective • BICU defective • Fusing temperature control is erratic

• Code: SC564
• Description: Hot roller thermistor error 4: Hardware - High Temperature
  The thermistor detected a temperature over 260°C.
• Causes: • TRIAC short • IOB defective • BICU defective • Fusing temperature control is erratic

• Code: SC565
• Description: Hot roller thermistor error 5: Lamp remains on
  After hot roller reaches warmup temperature, the hot roller fusing lamp remains for 6300 sec. while the hot roller is not rotating.
• Causes: • Thermistor damaged, or out of position • Fusing lamp disconnected, broken

• Code: SC620
• Description: ARDF communication error
  A BREAK signal occurs after the machine detects the ARDF, or a communication timeout occurs.
• Causes: • ARDF disconnected • IPU board harness disconnected, defective • IPU board defective • Spurious noise from the power supply line • ARDF control board defective