• Code: E3-88
• Description: Color Registration Compensation Error
• Causes: 1. Belt surface is scratched or dirty. 2. OPC Drum is scratched or dirty. 3. EC PCB is defective. 4. Sensor PCB is defective.

• Code: E3-89
• Description: Color Registration Detection Error
• Causes: 1. Belt surface is scratched or dirty. 2. OPC Drum is scratched or dirty. 3. LSU Shutter Open-Close is abnormal. 4. EC PCB is defective. 5. Sensor PCB is defective.

• Code: E3-90
• Description: TDC Sensor (Y) Calibration Error
• Causes: 1. Toner Sensor connector is disconnected. 2. Toner Sensor is defective. 3. EC PCB connector is disconnected. 4. EC PCB is defective.

• Code: E3-91
• Description: TDC Sensor (M) Calibration Error
• Causes: 1. Toner Sensor connector is disconnected. 2. Toner Sensor is defective. 3. EC PCB connector is disconnected. 4. EC PCB is defective.

• Code: E3-92
• Description: TDC Sensor (C) Calibration Error
• Causes: 1. Toner Sensor connector is disconnected. 2. Toner Sensor is defective. 3. EC PCB connector is disconnected. 4. EC PCB is defective.

• Code: E3-93
• Description: TDC Sensor (BK) Calibration Error
• Causes: 1. Toner Sensor connector is disconnected. 2. Toner Sensor is defective. 3. EC PCB connector is disconnected. 4. EC PCB is defective.

• Code: E3-94
• Description: Intermediate Transfer Belt Detection Error for color registration pattern on the right side of sensor.
• Causes: 1. Belt surface is scratched or contaminated with dirt. 2. OPC surface is scratched.

• Code: E3-95
• Description: Intermediate Transfer Belt Detection Error for color registration pattern on the center of sensor.
• Causes: 1. Belt surface is scratched or contaminated with dirt. 2. OPC surface is scratched.