• Code: C3-5410, C3-5414, C3-5510
• Display: Install black imaging unit. Black Imaging Unit Failure: #C3-5414. Install black imaging unit again Black imaging unit is not compatible. Check users guide
• Description: Black drum unit is not installed. / The machine can’t read the charger resistance value from the black drum unit. / Black drum unit is not compatible.
• Remedy: 1) Open the front cover. 2) Remove the waste toner container. 3) Open the side cover. 4) Remove the black drum unit. 5) Install the new black drum unit. 6) Install the waste toner container. 7) Close the front cover.

• Code: C3-5711, C3-5712
• Display: Imaging unit Failure: #. Call for service.
• Description: The data of CRUM is not detected.
• Remedy: 1) Open the front cover and side cover. 2) Remove the waste toner container. 3) Check if the black drum is installed. 4) Remove and reinstall the black drum unit. 5) If the problem persists, check that the drum modular jack is contaminated or deformed. 6) Replace the black drum unit with new one.

• Code: C5-1110, C5-1120
• Display: Prepare new transfer belt unit. Replace new transfer belt unit.
• Description: The life of the ITB Unit expires soon or has expired.
• Remedy: 1) Turn the machine off. 2) Replace the ITB Unit (JC96-06322A). 3) Turn the machine on. 4) Enter SVC mode. To enter SVC mode, press 1,2,3 number keys simultaneously. When the password dialog box appears, enter “1934” and press the “OK” button. 5) Select “TRANSFER” (INFORMATION > Supply Status > Field Replacement Unit > TRANSFER) 6) Select “ITB”. The “RESET” button will be activated. Click “RESET” to clear the ITB count. 7) Exit SVC mode by pushing the home button.

• Code: C5-1620, C5-1630
• Display: ITB Unit Failure: #C5-1620/1630/1640/1650. Turn off then on
• Description: The resistance value for 1st transfer roller is abnormal.
• Remedy: 1) Turn the machine off. Open the side cover. 2) Replace the ITB Unit (JC96-06322A). 3) Close the side cover. Turn the machine on. 4) If the problem persists, replace the HVPS board. 5) Enter SVC mode. To enter SVC mode, press 1,2,3 number keys simultaneously. When the password dialog box appears, enter “1934” and press the “OK” button. 6) Select “TRANSFER” (INFORMATION > Supply Status > Field Replacement Unit > TRANSFER) 7) Select “ITB”. The “RESET” button will be activated. Click “RESET” to clear the ITB count. 8) Exit SVC mode by pushing the home button.

• Code: C5-1640, C5-1650
• Display: ITB Unit Failure: #C5-1620/1630/1640/1650. Turn off then on
• Description: The resistance value for 1st transfer roller is abnormal.
• Remedy: 1) Turn the machine off. Open the side cover. 2) Replace the ITB Unit (JC96-06322A). 3) Close the side cover. Turn the machine on. 4) If the problem persists, replace the HVPS board. 5) Enter SVC mode. To enter SVC mode, press 1,2,3 number keys simultaneously. When the password dialog box appears, enter “1934” and press the “OK” button. 6) Select “TRANSFER” (INFORMATION > Supply Status > Field Replacement Unit > TRANSFER) 7) Select “ITB”. The “RESET” button will be activated. Click “RESET” to clear the ITB count. 8) Exit SVC mode by pushing the home button.

• Code: C6-1110, C6-1120
• Display: Prepare new fuser unit. Replace with new fuser unit.
• Description: The life of the fuser unit expires soon or has expired.
• Remedy: 1) Open the side cover. 2) Remove the Fuser Unit. Install the new Fuser Unit. 3) Close the side cover.

• Code: C6-1310
• Display: Fuser unit is not installed. Install it
• Description: The Fuser Unit is not installed. / Fuser connector is defective.
• Remedy: 1) Turn the machine off then on. 2) If the problem persists, turn the machine off again. 3) Open the side cover. Check if the fuser unit is installed. If not, install the fuser unit. 4) If the fuser unit is installed, remove it. 5) Check if the fuser draw connector (JC39-01747A) and pin are broken or defective. If they are contaminated, clean them. 6) Install the fuser unit. 7) Close the side cover. Turn the machine on. 8) If the problem persists, replace the fuser unit. (JC91-01120A(110V) / JC91-01121A(220V)) CAUTION The temperature gets high in the vicinity of the fuser unit. When replacing it, you may get burned. Before replacing it, make sure that fuser unit has cooled.

• Code: C7-1110, C7-1130
• Display: Waste toner container is almost full. Order new one. Waste toner container is full. Replace it.
• Description: The life of the waste toner container expires soon or has expired.
• Remedy: 1) Open the front cover. 2) Remove the waste toner container. Replace it with new one. 3) Close the front cover.