• Code: E1-22
• Description: Optical Unit Error. Polygon Motor Synchronization
• Remedy: 1. Engine PCB connector is disconnected. 2. Engine PCB is defective. 3. Laser Unit is defective. 4. LVPS connectors is disconnected. 5. LVPS is defective. 6. SC PCB is defective.

• Code: E13
• Description: Low Toner or Out of Toner. TONER IS RUNNIG LOW or OUT OF TONER
• Remedy: 1. Toner Cartridge is incorrectly installed. 2. Out of Toner. 3. Low Toner Sensor is disconnected. 4. Low Toner Sensor is defective. 5. Engine PCB connector is disconnected. 6. Engine PCB is defective.

• Code: E2
• Description: Lift DC Motor Error. Not Applicable
• Remedy:

• Code: E3-20
• Description: Development System Error. Main Motor Rotation
• Remedy: 1. Drive Mechanism is defective. 2. Main Motor connector is disconnected. 3. Main Motor is defective. 4. Engine PCB connector is disconnected. 5. Engine PCB is defective. 6. LVPS is defective.

• Code: E4-01
• Description: Fuser Unit Error. Fuser Warm-up Temperature
• Remedy: 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: Fuser Unit Error. Exhaust Fan Motor Rotation (Fuser Unit Side)
• Remedy: 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: E5-11
• Description: E5: System Error. Printer Engine Communication Abnormal
• Remedy: 1. SC/Engine PCB connector is disconnected. 2. SC/Engine PCB is defective.

• Code: E5-12
• Description: E5: System Error. Main CPU/SDR Interface Error
• Remedy: 1. SC/SDR PCB connector is disconnected. 2. SC/SDR PCB is defective.