• Code: C3-6110, C3-6130
• Display: Prepare new Imaging unit Replace new Imaging unit
• Description: The imaging unit is at the end of its life.ng unit
• Remedy: 1) Print the supply information report. Check the life remaining of the imaging unit. 2) If its life is at the end, turn the machine off and replace the imaging unit with new one.

• Code: C3-6410, C3-6520
• Display: Install Imaging unit Error: #C3-6520 Door open/close
• Description: The imaging unit is not installed.
• Remedy: 1) Open the front cover. Remove YMCK toner cartridges. 2) Check if the imaging unit is installed. Remove and reinstall it. 3) If the problem persists, replace the imaging unit.

• Code: C5-1110, C5-1120
• Display: Prepare new transfer belt unit. Replace new transfer belt unit.
• Description: The ITB Unit is at the end of its life.
• Remedy: 1) If its life is at the end, turn the machine off and replace the ITB unit with new one.

• Code: C5-1710
• Display: Transfer Belt Error
• Description: ITB home sensor is defective.
• Remedy: 1) Turn the machine off then on. 2) If the problem persists, turn the machine off. Remove and reinstall the ITB unit. 3) If the problem persists, replace the ITB unit with new one.

• Code: C5-3110, C5-3120
• Display: Prepare new Transfer roller Replace new Transfer roller
• Description: The transfer roller is at the end of its life.
• Remedy: 1) If its life is at the end, turn the machine off and replace the transfer roller Assy with new one.

• Code: C6-1110, C6-1120
• Display: Prepare new fuser unit. Replace with new fuser unit.
• Description: The fuser unit is at the end of its life.
• Remedy: 1) Print the supply information report. Check the life remaining of the fuser unit. 2) If its life is at the end, turn the machine off and replace the fuser unit with new one.

• Code: C7-1311
• Display: Waste toner container is not installed. Install it.
• Description: The waste toner container is not installed
• Remedy: 1) Check if the waste toner container is installed properly. 2) Remove and reinstall the waste toner container.

• Code: M1-1013, M2-1210
• Display: Paper jam in tray 1. Paper Jam inside machine
• Description: The jammed paper has occurred in the tray1 or inside the machine.
• Remedy: 1) Remove the jammed paper. 2) If the jammed paper occurs continually, check the followings. a) Check if the pick up roller are worn out or contaminated. Clean the contaminated part or replace it. b) Check if the feed actuator or feed sensor is assembled correctly. 3) If the pick up solenoid is defective, replace it.