Causes: 1. Fuser Thermistor is dirty. 2. Thermistor position is incorrect. 3. Fuser temperature is low. 4. Thermistor is defective. 5. Fuser Lamp connector is disconnected. 6. Fuser Thermostat is defective. 7. Fuser Lamp is defective. 8. Engine PCB connector is disconnected. 9. Engine PCB is defective.
Code: E4-10
Description: Exhaust Fan Motor Rotation (Fuser Unit Side)
Causes: 1. Exhaust Fan connector is disconnected. 2. Exhaust Fan is defective. 3. LVPS connector is disconnected. 4. LVPS is defective. 5. Engine PCB is defective.
Code: E5-05
Description: SPC Firmware Failure
Causes: 1. SPC PCB is defective.
Code: E5-11
Description: Thermistor, Toner Sensor
Causes: 1. SC/Engine PCB connector is disconnected. 2. SC/Engine PCB is defective.
Code: E5-12
Description: Main CPU/SPC Interface Error
Causes: 1. SC/SPC PCB connector is disconnected. 2. SC/SPC PCB is defective.