Description: Main high-voltage error C (40 ppm model) When adjusting Vpp in the main charger adjustment, the inflowing current of the drum unit (C) is excessively low.
Remedy: Drum unit 1. Confirm that the drum or the drum screw can rotate. 2. If it won’t rotate, replace the drum unit. Main charger roller unit 1. Confirm that the Main charger roller unit has been firmly attached. 2. Replace the Main charger roller unit. High-voltage PWB 1. Confirm that the wiring connector is firmly connected, and if necessary, connect the connector all the way in. High-voltage PWB (YC101) and Main/ Engine PBW (YC7) 2. If the wiring is disconnected, short-circuited or has ground fault, replace the wire. 3. Replace the High-voltage PWB. Main/Engine PWB 1. Check both main and engine firmware, and upgrade to the latest version, if necessary. 2. Replace the Main/Engine PWB.
Code: 5103
Description: Main high-voltage error M (40 ppm model) When adjusting Vpp in the main charger adjustment, the inflowing current of the drum unit (M) is excessively low.
Remedy: Drum unit 1. Confirm that the drum or the drum screw can rotate. 2. If it won’t rotate, replace the drum unit. Main charger roller unit 1. Confirm that the Main charger roller unit has been firmly attached. 2. Replace the Main charger roller unit. High-voltage PWB 1. Confirm that the wiring connector is firmly connected, and if necessary, connect the connector all the way in. High-voltage PWB (YC101) and Main/ Engine PBW (YC7) 2. If the wiring is disconnected, short-circuited or has ground fault, replace the wire. 3. Replace the High-voltage PWB. Main/Engine PWB 1. Check both main and engine firmware, and upgrade to the latest version, if necessary. 2. Replace the Main/Engine PWB.
Code: 5104
Description: Main high-voltage error Y (40 ppm model) When adjusting Vpp in the main charger adjustment, the inflowing current of the drum unit (Y) is excessively low.
Remedy: Drum unit 1. Confirm that the drum or the drum screw can rotate. 2. If it won’t rotate, replace the drum unit. Main charger roller unit 1. Confirm that the Main charger roller unit has been firmly attached. 2. Replace the Main charger roller unit. High-voltage PWB 1. Confirm that the wiring connector is firmly connected, and if necessary, connect the connector all the way in. High-voltage PWB (YC101) and Main/ Engine PBW (YC7) 2. If the wiring is disconnected, short-circuited or has ground fault, replace the wire. 3. Replace the High-voltage PWB. Main/Engine PWB 1. Check both main and engine firmware, and upgrade to the latest version, if necessary. 2. Replace the Main/Engine PWB.
Code: 6000
Description: Broken fuser main heater wire During the warming up, the temperature detected by the center thermistor does not reach 100 °C/212.0 °F for 20 s. During the warming up, the temperature detected by the center thermistor does not reach the stable display temperature for 30 s successively, after it reach to 100 °C/212.0 °F.
Remedy: Fuser unit 1. Check there is no paper jam.. 2. Confirm that the wiring connector is firmly connected, and if necessary, connect the connector all the way in. Fuser unit and Eject PWB (YC2) Eject PWB (YC1) and Main/Engine PWB (YC11) 3. If the wiring is disconnected, short-circuited or has ground fault, replace the wire. 4. If the fuser heater is not turned on (broken thermostat wire), replace the fuser unit. Power source PWB 1. Confirm that the wiring connector is firmly connected, and if necessary, connect the connector all the way in. Power source PWB (YC105) and Main/ Engine PWB (YC20) 2. Replace the power source PWB. Eject PWB Replace the eject PWB. Main/Engine PWB 1. Check the engine firmware and upgrade to the latest version if necessary. 2. Replace the Main/Engine PWB.
Code: 6020
Description: Abnormally high fuser center thermistor temperature The center thermistor detected the temperature exceeds 240 °C/464.0 °F for 1 s successively.
Remedy: Fuser unit 1. Check there is no paper jam.. 2. Check if the fuser roller has foreign objects such as the toner contamination. 3. Confirm that the wiring connector is firmly connected, and if necessary, connect the connector all the way in. Fuser unit and Eject PWB (YC2) Eject PWB (YC1) and Main/Engine PWB (YC11) 4. If the wiring is disconnected, short-circuited or has ground fault, replace the wire. 5. Replace the fuser unit. Power source PWB 1. Confirm that the wiring connector is firmly connected, and if necessary, connect the connector all the way in. Power source PWB (YC105) and Main/ Engine PWB (YC20) If the fuser heater is turned on at all times, replace the power source PWB. Main/Engine PWB 1. Check the engine firmware and upgrade to the latest version if necessary. 2. Check if the Main/Engine PWB is properly secured with screws. 3. Replace the Main/Engine PWB.
Code: 6030
Description: Broken fuser center thermistor wire During the edge thermistor detects more than 30 °C/86.0 °F the center thermistor detects low temperature for 1.6 s.
Remedy: Fuser unit 1. Check there is no paper jam.. 2. Confirm that the wiring connector is firmly connected, and if necessary, connect the connector all the way in. Fuser unit and Eject PWB (YC2) Eject PWB (YC1) and Main/Engine PWB (YC11) 3. If the wiring is disconnected, short-circuited or has ground fault, replace the wire. 4. Replace the fuser unit. Eject PWB Replace the eject PWB. Main/Engine PWB 1. Check the engine firmware and upgrade to the latest version if necessary. 2. Replace the Main/Engine PWB.
Code: 6040
Description: Fuser heater error (35/40 ppm models) Input value from the fuser center thermistor is abnormal for 1 s successively.
Remedy: Fuser unit 1. Check there is no paper jam.. 2. Confirm that the wiring connector is firmly connected, and if necessary, connect the connector all the way in. Fuser unit and Eject PWB (YC2) Eject PWB (YC1) and Main/Engine PWB (YC11) 3. If the wiring is disconnected, short-circuited or has ground fault, replace the wire. 4. Replace the fuser unit. Eject PWB Replace the eject PWB. Main/Engine PWB 1. Check the engine firmware and upgrade to the latest version if necessary. 2. Replace the Main/Engine PWB.
Code: 6050
Description: Abnormally low fuser center thermistor temperature During the warming up and the printing, the center thermistor has detected less than 100 °C/212.0 °F for 1 s successively.
Remedy: Reduction of the power supply voltage 1. Check that no voltage drop of more than 10% of the rated is caused during printing. 2. If the power is overloaded, change the AC outlet that supplies power. Fuser unit 1. Check there is no paper jam.. 2. Confirm that the wiring connector is firmly connected, and if necessary, connect the connector all the way in. Fuser unit and Eject PWB (YC2) Eject PWB (YC1) and Main/Engine PWB (YC11) 3. If the wiring is disconnected, short-circuited or has ground fault, replace the wire. 4. If the fuser heater is not turned on (broken thermostat wire), replace the fuser unit. Power source PWB 1. Confirm that the wiring connector is firmly connected, and if necessary, connect the connector all the way in. Power source PWB (YC105) and Main/ Engine PWB (YC20) 2. Replace the power source PWB. Eject PWB Replace the eject PWB. Main/Engine PWB 1. Check the engine firmware and upgrade to the latest version if necessary. 2. Replace the Main/Engine PWB.