• Code: E1-20
• Description: Laser Unit Horizontal Synchronization
• Causes: 1. LPC3 PCB connector(s) is disconnected. 2. LPC3 PCB is defective. 3. LSU is defective. 4. LVPS connector is disconnected. 5. LVPS is defective. 6. LPC3/SC PCB connector is disconnected. 7. SC/LPC3 PCB is defective.

• Code: E1-22
• Description: Polygon Motor Synchronization
• Causes: 1. LPC3 PCB connector is disconnected. 2. LPC3 PCB is defective. 3. Laser Unit is defective. 4. LVPS connectors is disconnected. 5. LVPS is defective. 6. LPC3/SC PCB connector is disconnected. 7. SC PCB is defective.

• Code: E2
• Description: Lift DC Motor Error
• Causes:

• Code: E3-01
• Description: Toner Bottle Motor Rotation
• Causes: 1. Toner Bottle Motor connector is disconnected. 2. Toner Bottle Motor drive mechanism is defective. 3. Toner Bottle Motor is defective. 4. Toner Bottle Motor Home Position Sensor connector is disconnected. 5. LVPS connector is disconnected. 6. LVPS is defective. 7. LPC3 PCB connector(s) is disconnected. 8. LPC3 PCB is defective.

• Code: E3-20
• Description: Printer Motor (DC Motor) Rotation
• Causes: 1. Printer motor connector is disconnected. 2. Printer motor is defected. 3. LVPS connector is disconnected. 4. LVPS is defective. 5. LPC3 PCB connector is disconnected. 6. LPC3 PCB is defective.

• Code: E4-01
• Description: Fuser Warm-up Temperature
• Causes: 1. Fuser Thermistor is dirty. 2. Thermistor position is incorrect. 3. Fuser temperature is low. (Adjust F6-31) 4. Thermistor is defective. 5. Fuser Lamp connector is disconnected. 6. Fuser Thermostat is defective. 7. Fuser Lamp is defective. 8. HTC PCB connector is disconnected. 9. HTC PCB is defective.

• Code: E4-02
• Description: Paper Jam
• Causes: 1. Paper Jam in Fuser Unit.

• 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. LPC3 PCB is defective.