• Code: U13
• Description: ADD TONER NO TONER WASTE CONTAINER
• Causes: 1. Toner Bottle is incorrectly installed. 2. Low Toner. 3. Toner Sensor is disconnected. 4. Toner Sensor is defective. 5. LVPS connector is disconnected. 6. LVPS is defective. 7. LPC3 PCB connector is disconnected. 8. LPC3 PCB is defective.

• Code: U14
• Description: TONER WASTE CONTAINER IS FULL
• Causes: 1. Toner Waste Container is incorrectly installed. 2. Toner Waste Container is full of toner. 3. Toner Waste Container Sensor connector is disconnected. 4. Toner Waste Container Sensor is defective. 5. LVPS connector is disconnected. 6. LVPS is defective. 7. LPC3 PCB connector is disconnected. 8. LPC3 PCB is defective. 9. SC PCB is defective.

• Code: U16
• Description: NO TONER WASTE CONTAINER
• Causes: 1. No Developer Unit. 2. No Toner Waste Container.

• Code: U20
• Description: CLOSE ADF COVER
• Causes: 1. ADF Cover is open. 2. ADF is not installed correctly. 3. ADF Cover Sensor is disconnected. 4. ADF Cover Sensor is defective. 5. LVPS connector is disconnected. 6. LVPS is defective.

• Code: U21
• Description: CLOSE PLATEN COVER
• Causes: While the copier is initializing, the ADF Cover was opened. (Optional ADF installed)