• Code: C0410
• Description: Exposure Lamp turning ON at abnormal timing
  CCD Sensoroutputsare writteninlineRAM at the end of a scan job and the average of these readings exceeds a predetermined value.
• Remedy: 1 Exposure Lamp conduction NO: Change Exposure Lamp. 2 Temperature Fuse conduction. NO: Change Temperature Fuse. 3 Flat Cable conduction NO: Check for correct installation or change. 4 The problem has been eliminated through the checks of steps up to 3. NO: Change DC Power Supply 2. 5 Exposure Lamp turns ON and OFF correctly after DC Power Supply 2 has been replaced. NO: Change Image Processing Board.

• Code: C0500
• Description: Heating Roller warm-up failure (Fusing Thermistor 1)
  • Fusing Thermistor 1 does not detect a predetermined temperature and the warm-up cycle is not completed within the period of 9 min. 10 sec. after the warm-up cycle has been started. • The temperature of Fusing Thermistor 1 does not rise to a level more than the predetermined output value within 30 sec. after the warm-up cycle has started.
• Remedy: 1 Fusing Unit condition: the resistance across CN4-15 and 16 on the Fusing Unit end is infinity with CN4 (2P) disconnected. YES: Change Fusing Unit. NO: Change Master Board. 2 Heating Roller Heater Lamps turn ON. YES: Change DC Power Supply 1. Change Master Board. NO: Change Fusing Unit.

• Code: C0501
• Description: Lower Fusing Roller Heater Lamp warm-up failure (Fusing Thermistor 2)
  •The temperature of Fusing Thermistor 2 does not reach 100 C within 180 sec. after the warm-up cycle has started. • The temperature of Fusing Thermistor 1 does not rise to a level more than the predetermined output value within 130 sec. after the warm-up cycle has started.
• Remedy: 1 Fusing Unit condition: the resistance across CN4-17 and 18 on the Fusing Unit end is infinity with CN4 (2P) disconnected. YES: Change Fusing Unit. NO: Change Master Board. 2 Lower Fusing Roller Heater Lamp turns ON. YES: Change DC Power Supply 1. Change Master Board. NO: Change Fusing Unit.

• Code: C0510
• Description: Heating Roller abnormally low temperature (Fusing Thermistor 1)
  • The temperature of Fusing Thermistor 1 remains below 120 C for 1 sec. or more in the standby state. • The temperature of Fusing Thermistor 1 remains below 130 C for 1 sec. or more during a print cycle. • The temperature of Fusing Thermistor 1 remains below 90 C for 1 sec. or more in the Energy Saver mode.
• Remedy: 1 Fusing Unit condition: the resistance across CN4-15 and 16 on the Fusing Unit end is infinity with CN4 (2P) disconnected. YES: Change Fusing Unit. NO: Change Master Board. 2 Heating Roller Heater Lamps turn ON. YES: Change DC Power Supply 1. Change Master Board. NO: Change Fusing Unit.

• Code: C0511
• Description: Lower Fusing Roller Heater Lamp abnormally low temperature (Fusing Thermistor 2)
  • The temperature of Fusing Thermistor 2 remains below 100 C for 1 sec. or more in the standby state. • The temperature of Fusing Thermistor 2 remains below 100 C for 1 sec. or more during a print cycle. • The temperature of Fusing Thermistor 2 remains below 100 C for 1 sec. or more in the Energy Saver mode.
• Remedy: 1 Fusing Unit condition: the resistance across CN4-17 and 18 on the Fusing Unit end is infinity with CN4 (2P) disconnected. YES: Change Fusing Unit. NO: Change Master Board. 2 Lower Fusing Roller Heater Lamp turns ON. YES: Change DC Power Supply 1. Change Master Board. NO: Change Fusing Unit.

• Code: C0520
• Description: Heating Roller abnormally high temperature (Fusing Thermistor 1)
  The temperature of Fusing Thermistor 1 remains above 220 C for 1 sec. or more at all times.
• Remedy: 1 Fusing Unit condition: the resistance across CN4-15 and 16 on the Fusing Unit end is 0 Om (or close to 0) with CN4 (2P) disconnected. YES: Change Fusing Unit. NO: Change Master Board..

• Code: C0521
• Description: Lower Fusing Roller Heater Lamp abnormally high temperature (Fusing Thermistor 2)
  The temperature of Fusing Thermistor 2 remains above 190 C for 1 sec. or more at all times.
• Remedy: 1 Fusing Unit condition: the resistance across CN4-15 and 16 on the Fusing Unit end is 0 W (or close to 0) with CN4 (2P) disconnected. YES: Change Fusing Unit. NO: Change Master Board.

• Code: C0650
• Description: Scanner Home Sensor malfunction
  • The Scanner Home Sensor fails to detect the Scanner at its home position though the Scanner is so located. • The Scanner Home Sensor fails to detect the Scanner though the motor has been energized to move the Scanner over the maximum distance. • The Scanner Home Sensor detects the Scanner at its home position though the Scanner has moved 5 mm away from the home position.
• Remedy: 1 Scanner can be moved manually. NO: Correct drive coupling (Scanner Belt tension, pulley operation, drive cable tension) 2 Scan motion: initial scan motion after the Power Switch has been turned ON or Front Door has been opened and closed. NO: Carry out misfeed/malfunction troubleshooting procedures. 3 Connectors are connected properly on Scanner Motor Drive Board: PWB-IC PJ1IC, PJ2IC, and PJ3IC. NO: Check connectors for connection. 4 Scanner Motor turns when the Start key is pressed. NO: Check connectors for connection. Change motor. Change Scanner Motor Drive Board. 5 I/O check for Scanner Home Sensor: the voltage across PJ6C-2 on Image Processing Board and GND is DC 0 V (home position) when the sensor is blocked and DC 5 V when the sensor is unblocked. YES: Change Image Processing Board. NO: Check sensor for installation. Correct detecting plate. Check sensor connector for connection. Change sensor. 6 “IR Area” check: Malfunction when Power Switch is turned ON after “Top Image” has been set to 0 and “FD-Mag.” to 1.000. NO: Adjust “IR Area” data.