Description: Main Motor’s failure to turn
• The Lock signal does not go LOW within 1 s after the motor has been energized. • The Lock signal remains HIGH for continuous 0.1 s or more while the motor remains energized.
Remedy: 1 Main Motor turns after the malfunction has been reset. NO Correct drive. 2 Main Motor operation: the voltage across PJ6A-3 on the Master Board and GND is DC5 V (motor deenergized) and DC0 V (motor energized) after the malfunction has been reset. NO Change Master Board. 3 The voltage across PJ6A-4 on the Master Board and GND is DC5 V (motor deenergized) and DC0 V (motor energized) after the malfunction has been reset. YES Change Master Board. NO Change motor.
Code: C0045
Description: Fusing Section Cooling Fan Motor’s failure to turn
A voltage of 0.3 V or less is detected for a continuous 1 s period while the motor remains energized.
Remedy: 1 Fusing Section Cooling Fan Motor operation: the voltage across CN7-2 on the Power Supply Board and GND is DC24 V after the malfunction has been reset. NO Change Power Supply Board. 2 Fusing Section Cooling Fan Motor operation: the voltage across CN7-1 on the Power Supply Board and GND is DC1.2 V (during high-speed rotation) and DC12 V (during low-speed rotation) after the malfunction has been reset. YES Change motor. NO Change Power Supply Board. Change Master Board.
Code: C0049
Description: PH Section Cooling Fan Motor’s failure to turn
A voltage of 0.35 V or less is detected for a continuous 0.5 s period while the motor remains energized.
Remedy: 1 PH Section Cooling Fan Motor operation: the voltage across PJ13A-2 on the Master Board and GND is DC24 V after the malfunction has been reset. NO Change Master Board. 2 PH Section Cooling Fan Motor operation: the voltage across PJ13A-1 on the Master Board and GND is DC1 V (motor energized) and DC24 V (motor deenergized) after the malfunction has been reset. YES Change motor. NO Change Master Board.
Code: C0200
Description: HV output failure
• The drum charge monitor voltage is lower than 4.5 V when the power switch is turned ON. • The drum charge monitor voltage remains 4.5 V or more when the drum charge output is turned ON. • The image transfer monitor voltage is 0.5 V or more immediately before the image transfer output is turned ON. • The image transfer monitor voltage does not increase 0.5 V or more within 40 ms after the image transfer output is turned ON.
Remedy: 1 High Voltage Unit operation: the voltage across PJ4A-4 on the Master Board and GND is DC24 V after the malfunction has been reset. YES Change High Voltage Unit. 2 Proper connection between the High Voltage Unit and Master Board. YES Change Master Board. NO Correct connection.
Code: C0500
Description: Warm-up failure
• During the period from 12 s to 30 s after the start of the warm-up cycle, a condition of small temperature difference from the temperature at the start of the warm-up cycle is detected for a 50 ms period. • The temperature detected by the Thermistor does not reach the set level within 120 s after the start of the warm-up cycle.
Remedy: 1 Fusing Heater Lamp turns ON after the malfunction has been reset. YES Correct Thermistor for mounting position and/or clean. 2 Thermistor operation: resistance across CN1-1 and 2 on the Fusing Unit side is infinite, as measured with CN1 disconnected. YES Change Thermistor. 3 Thermoswitch and Fusing Heater Lamp operation: there is continuity across CN14-1 and 2 on the Fusing Unit side, as measured with CN14 disconnected. NO Change Thermoswitch. Change Fusing Heater Lamp. 4 The voltage across PJ14A-3 on the Master Board and GND is DC0 V (Fusing Heater Lamp ON) and DC24 V (Fusing Heater Lamp OFF) after the malfunction has been reset. YES Change Power Supply Board. Change Fuse 2 of Power Supply Board. NO Change Master Board.
Code: C0510
Description: Abnormally low fusing temperature
• The temperature detected by the Thermistor remains lower than 94 °C for a continuous 50 ms period while the copier is in the standby state. • The temperature detected by the Thermistor remains lower than 110 °C for a continuous 50 ms period during a copy cycle.
Remedy: 1 Fusing Heater Lamp turns ON after the malfunction has been reset. YES Correct Thermistor for mounting position and/or clean. 2 Thermistor operation: resistance across CN1-1 and 2 on the Fusing Unit side is infinite, as measured with CN1 disconnected. YES Change Thermistor. 3 Thermoswitch and Fusing Heater Lamp operation: there is continuity across CN14-1 and 2 on the Fusing Unit side, as measured with CN14 disconnected. NO Change Thermoswitch. Change Fusing Heater Lamp. 4 The voltage across PJ14A-3 on the Master Board and GND is DC0 V (Fusing Heater Lamp ON) and DC24 V (Fusing Heater Lamp OFF) after the malfunction has been reset. YES Change Power Supply Board. Change Fuse 2 of Power Supply Board. NO Change Master Board.