• Code: C0000
• Description: Main Motor malfunction
  • The Main Motor (M1) Lock signal remains HIGH for a continuous 1-sec. period at any time 1 sec. after the Main Motor has started turning.
• Remedy: 1 Main Motor (M1) turns when the Start key is pressed. NO • Check for overload. 2 The following voltage is supplied to the Main Motor (M1) when the Start key is pressed. Check voltage across a Master Board (copier: PWB-A) pin and GND when the Start key is pressed. • Voltage across PJ7A-6 and GND DC5 V when Main Motor (M1) is in standby state DC0 V when Main Motor (M1) is energized • Voltage across PJ7A-5 and GND DC5 V when Main Motor (M1) is in standby state DC0 V when Main Motor (M1) is energized NO • Change Main Motor (M1). YES • Change Master Board (copier: PWB-A).

• Code: C0045
• Description: Fusing Cooling Fan Motor malfunction
  • The Fusing Cooling Fan Motor (M3) Lock signal remains HIGH for a continuous 1-sec. period while the Fusing Cooling Fan Motor is turning at full speed or decelerated speed.
• Remedy: 1 Fusing Cooling Fan Motor (M3) turns when the Power Switch is turned ON. NO • Check for overload. 2 The following voltage is supplied to the Fusing Cooling Fan Motor (M3). <Check Procedure> Check voltage across a Master Board (copier: PWB-A) pin and GND when the Power Switch is turned ON. • Voltage across PJ10A-4 and GND DC8 V during rotation at decelerated speed DC24 V during rotation at full speed YES • Change Fusing Cooling Fan Motor (M3). 3 The following voltage is supplied to the Fusing Cooling Fan Motor (M3). <Check Procedure> Check voltage across a Master Board (copier: PWB-A) pin and GND when the Power Switch is turned ON. • Voltage across PJ10A-6 and GND DC0 V when energized NO • Change Fusing Cooling Fan Motor (M3). YES • Change Master Board (copier: PWB-A).

• Code: C004E
• Description: Power Supply Cooling Fan Motor malfunction
  • The Power Supply Cooling Fan Motor (M4) Lock signal remains HIGH for a continuous 1-sec. period while the Power Supply Cooling Fan Motor Remote signal remains ON (for full-speed rotation) or OFF (for decelerated-speed rotation).
• Remedy: 1 Power Supply Cooling Fan Motor (M4) turns when the Power Switch is turned ON. NO • Check for overload. 2 The following voltage is supplied to the Power Supply Cooling Fan Motor (M4). <Check Procedure> Check voltage across a Master Board (copier: PWB-A) pin and GND when the Power Switch is turned ON. • Voltage across PJ19A-1 and GND DC8 V during rotation at decelerated speed DC24 V during rotation at full speed YES • Change Power Supply Cooling Fan Motor (M4). 3 The following voltage is supplied to the Power Supply Cooling Fan Motor (M4). <Check Procedure> Check voltage across a Master Board (copier: PWB-A) pin and GND when the Power Switch is turned ON. • Voltage across PJ19A-3 and GND DC0 V when energized NO • Change Power Supply Cooling Fan Motor (M4). YES • Change Master Board (copier: PWB-A).

• Code: C0070
• Description: Toner Replenishing Motor malfunction
  • The Toner Bottle Home Position Sensor (PC7) outputs a HIGH signal for a continuous 3.5-sec. period while the Toner Bottle is turning. • The Toner Bottle Home Position Sensor (PC7) outputs a LOW signal for a continuous 2-sec. period while the Toner Bottle is turning.
• Remedy: 1 The coupling of the Toner Hopper turns as the Toner Replenishing Motor (M6) turns. <Check Procedure> • Disengage the Toner Bottle Release Lever. • Turn the Toner Bottle a half turn by hand. • Turn ON the Power Switch. NO • Check for overload. 2 The Toner Bottle Home Position Sensor (PC7) is operational. <Check Procedure> Check voltage across a Master Board (copier: PWB-A) pin and GND when the Toner Replenishing Motor (M6) turns. • Voltage across PJ19A-10 and GND DC0 V when unblocked DC5 V when blocked NO • Change Toner Bottle Home Position Sensor (PC7). 3 The following voltage is supplied to the Toner Replenishing Motor (M6). <Check Procedure> Check voltage across a Master Board (copier: PWB-A) pin and GND when the Toner Replenishing Motor (M6) turns. • Voltage across PJ19A-6 and GND DC0 V when deenergized DC24 V when energized YES • Change Toner Replenishing Motor (M6). NO • Change Master Board (copier: PWB-A).

• Code: C0210
• Description: Abnormal image transfer voltage
  • The image transfer voltage remains more than 100 V for a continuous given period of time while the PC Drum remains stationary.
• Remedy: 1 • C0210 reappears when the Power Switch is turned OFF and ON. YES • Change High Voltage Unit (HV1). • Change Master Board (PWB-A).

• Code: C03FF
• Description: Improperly set Adjust Mode 11
  • An incorrect setting is made of Adjust 11.
• Remedy:

• Code: C0500
• Description: Warm-up failure
  • It takes the surface temperature of the Left Fusing Roller more than 35 sec. to reach 100 °C since the start of a warm-up cycle. • It takes the surface temperature of the Left Fusing Roller more than 25 sec. to reach 140 °C after it has reached 100 °C. • It takes more than 20 sec. for the warm-up cycle to be completed after the surface temperature of the Left Fusing Roller has reached 140 °C.
• Remedy: 1 • Fusing Heater Lamp (H1) turns ON. YES • Go to step 3. NO • Go to step 2. 2 Fusing Heater Lamp (H1) is open-circuited. <Check Procedure> Check the resistance across both ends of the Fusing Heater Lamp (H1). The Fusing Heater Lamp is open-circuited if the resistance is infinity. YES • Change Fusing Heater Lamp (H1). 3 Thermoswitch 1 (TS1) is operational. <Check Procedure> Check the resistance across both ends of the Thermoswitch 1 (TS1). The Thermoswitch 1 is open-circuited if the resistance is infinity. NO • Change Thermoswitch 1 (TS1). 4 Fusing Unit Interlock Switch (S2) is operational. <Check Procedure> Check continuity across terminals when the Fusing Unit Interlock Switch (S2) is turned ON. • Across S2-1A and S2-1B • Across S2-2A and S2-2B NO • Change Fusing Unit Interlock Switch (S2). YES • Change DC Power Supply (PU1). 5 Thermistor (TH1) is open-circuited. <Check Procedure> Check the resistance across CN15-2 and CN15-3 on the Fusing Unit side with CN15 disconnected. The Thermistor is open-circuited if the resistance is infinity. YES • Change Thermistor (TH1). 6 The following voltages are supplied from the Master Board (copier: PWBA). <Check Procedure> Check voltage across a Master Board (copier: PWB-A) pin and GND when the Power Switch is turned ON. • Voltage across PJ10A-7 and GND DC24 V when Fusing Heater Lamp (H1) is OFF DC0 V when Fusing Heater Lamp (H1) is ON • Voltage across PJ10A-10 and GND DC24 V when Fusing Heater Lamp (H1) is OFF DC0 V when Fusing Heater Lamp (H1) is ON NO • Change Master Board (copier: PWB-A).

• Code: C0510
• Description: Abnormally low fusing temperature
  • The surface temperature of the Left Fusing Roller remains lower than 120 °C for a given period of time while the copier is in a standby state. • The surface temperature of the Left Fusing Roller remains lower than 120 °C for a given period of time during a print cycle.
• Remedy: 1 • Fusing Heater Lamp (H1) turns ON. YES • Go to step 3. NO • Go to step 2. 2 Fusing Heater Lamp (H1) is open-circuited. <Check Procedure> Check the resistance across both ends of the Fusing Heater Lamp (H1). The Fusing Heater Lamp is open-circuited if the resistance is infinity. YES • Change Fusing Heater Lamp (H1). 3 Thermoswitch 1 (TS1) is operational. <Check Procedure> Check the resistance across both ends of the Thermoswitch 1 (TS1). The Thermoswitch 1 is open-circuited if the resistance is infinity. NO • Change Thermoswitch 1 (TS1). 4 Fusing Unit Interlock Switch (S2) is operational. <Check Procedure> Check continuity across terminals when the Fusing Unit Interlock Switch (S2) is turned ON. • Across S2-1A and S2-1B • Across S2-2A and S2-2B NO • Change Fusing Unit Interlock Switch (S2). YES • Change DC Power Supply (PU1). 5 Thermistor (TH1) is open-circuited. <Check Procedure> Check the resistance across CN15-2 and CN15-3 on the Fusing Unit side with CN15 disconnected. The Thermistor is open-circuited if the resistance is infinity. YES • Change Thermistor (TH1). 6 The following voltages are supplied from the Master Board (copier: PWBA). <Check Procedure> Check voltage across a Master Board (copier: PWB-A) pin and GND when the Power Switch is turned ON. • Voltage across PJ10A-7 and GND DC24 V when Fusing Heater Lamp (H1) is OFF DC0 V when Fusing Heater Lamp (H1) is ON • Voltage across PJ10A-10 and GND DC24 V when Fusing Heater Lamp (H1) is OFF DC0 V when Fusing Heater Lamp (H1) is ON NO • Change Master Board (copier: PWB-A).