• Code: C5132
• Description: Primary transfer high-voltage error C Object: Color models
• Causes: When adjusting the feedback, the detected electric current value exceeds the upper limit or is less than the lower limit, or the adjustment result is 300V or less or is 2,900V or more.
• Remedy: 1 Checking the developer BK/belt motor The developer BK/belt motor is faulty. Execute U030 [DLP(K)] to check the developer BK/belt motor operation.If it does not properly operate, reattach the developer BK/belt motor and reconnect the connector. When it is not fixed, replace the motor. U030 Execution 2 Reinstalling the primary transfer unit The primary transfer unit is not properly installed. Reinstall the primary transfer unit so that the high-voltage contacts of the primary transfer roller firmly connect. Primary Transfer Unit Replacement 3 Primary transfer unit replacement The primary transfer belt does not properly rotate. Replace the primary transfer unit when the primary transfer belt does not rotate manually. Primary Transfer Unit Replacement 4 Checking the high-voltage contact Foreign material adheres on the high-voltage contacts of the primary transfer roller, and so, the proper voltage is not applied. Clean the high-voltage contact of the primary transfer roller, and apply conductive grease to the roller shaft. 5 Reinstalling the transfer high-voltage PWB The high-voltage contacts on the transfer high-voltage PWB are faulty, and so, the proper voltage is not applied. Reinstall the transfer highvoltage PWB. Transfer High-voltage PWB Replacement 6 Checking the wire The wire is not properly connected or is faulty. Reinsert the following wire connectors, and replace the wires if there is no continuity.• Transfer high-voltage PWB - Engine PWB• Transfer highvoltage PWB - Feed image PWB Electrical Diagram of PWBs 7 Replacing the transfer high-voltage PWB The transfer high-voltage PWB is faulty. Replace the transfer highvoltage PWB. Transfer High-voltage PWB Replacement 8 Firmware upgrade The firmware is not the latest version. Upgrade the engine firmware to the latest version Firmware Upgrade 9 Replacing the feed image PWB The feed image PWB is faulty. Replace the feed image PWB. 10 Replacing the engine PWB The engine PWB is faulty. Replace the engine PWB. Engine PWB Replacement

• Code: C5133
• Description: Primary transfer high-voltage error M Object: Color models
• Causes: When adjusting the feedback, the detected electric current value exceeds the upper limit or is less than the lower limit, or the adjustment result is 300V or less or is 2,900V or more
• Remedy: 1 Checking the developer BK/belt motor The developer BK/belt motor is faulty. Execute U030 [DLP(K)] to check the developer BK/belt motor operation.If it does not properly operate, reattach the developer BK/belt motor and reconnect the connector. When it is not fixed, replace the motor. U030 Execution 2 Reinstalling the primary transfer unit The primary transfer unit is not properly installed. Reinstall the primary transfer unit so that the high-voltage contacts of the primary transfer roller firmly connect. Primary Transfer Unit Replacement 3 Primary transfer unit replacement The primary transfer belt does not properly rotate. Replace the primary transfer unit when the primary transfer belt does not rotate manually. Primary Transfer Unit Replacement 4 Checking the high-voltage contact Foreign material adheres on the high-voltage contacts of the primary transfer roller, and so, the proper voltage is not applied. Clean the high-voltage contact of the primary transfer roller, and apply conductive grease to the roller shaft. 5 Reinstalling the transfer high-voltage PWB The high-voltage contacts on the transfer high-voltage PWB are faulty, and so, the proper voltage is not applied. Reinstall the transfer highvoltage PWB. Transfer High-voltage PWB Replacement 6 Checking the wire The wire is not properly connected or is faulty. Reinsert the following wire connectors, and replace the wires if there is no continuity.• Transfer high-voltage PWB - Engine PWB• Transfer highvoltage PWB - Feed image PWB Electrical Diagram of PWBs 7 Replacing the transfer high-voltage PWB The transfer high-voltage PWB is faulty. Replace the transfer highvoltage PWB. Transfer High-voltage PWB Replacement 8 Firmware upgrade The firmware is not the latest version. Upgrade the engine firmware to the latest version Firmware Upgrade 9 Replacing the feed image PWB The feed image PWB is faulty. Replace the feed image PWB. 10 Replacing the engine PWB The engine PWB is faulty. Replace the engine PWB. Engine PWB Replacement

• Code: C5134
• Description: Primary transfer high-voltage error Y Object: Color models
• Causes: When adjusting the feedback, the detected electric current value exceeds the upper limit or is less than the lower limit, or the adjustment result is 300V or less or is 2,900V or more.
• Remedy: 1 Checking the developer BK/belt motor The developer BK/belt motor is faulty. Execute U030 [DLP(K)] to check the developer BK/belt motor operation.If it does not properly operate, reattach the developer BK/belt motor and reconnect the connector. When it is not fixed, replace the motor. U030 Execution 2 Reinstalling the primary transfer unit The primary transfer unit is not properly installed. Reinstall the primary transfer unit so that the high-voltage contacts of the primary transfer roller firmly connect. Primary Transfer Unit Replacement 3 Primary transfer unit replacement The primary transfer belt does not properly rotate. Replace the primary transfer unit when the primary transfer belt does not rotate manually. Primary Transfer Unit Replacement 4 Checking the high-voltage contact Foreign material adheres on the high-voltage contacts of the primary transfer roller, and so, the proper voltage is not applied. Clean the high-voltage contact of the primary transfer roller, and apply conductive grease to the roller shaft. 5 Reinstalling the transfer high-voltage PWB The high-voltage contacts on the transfer high-voltage PWB are faulty, and so, the proper voltage is not applied. Reinstall the transfer highvoltage PWB. Transfer High-voltage PWB Replacement 6 Checking the wire The wire is not properly connected or is faulty. Reinsert the following wire connectors, and replace the wires if there is no continuity.• Transfer high-voltage PWB - Engine PWB• Transfer highvoltage PWB - Feed image PWB Electrical Diagram of PWBs 7 Replacing the transfer high-voltage PWB The transfer high-voltage PWB is faulty. Replace the transfer highvoltage PWB. Transfer High-voltage PWB Replacement 8 Firmware upgrade The firmware is not the latest version. Upgrade the engine firmware to the latest version Firmware Upgrade 9 Replacing the feed image PWB The feed image PWB is faulty. Replace the feed image PWB. 10 Replacing the engine PWB The engine PWB is faulty. Replace the engine PWB. Engine PWB Replacement

• Code: C6000
• Description: IH heating error 1
• Causes: 1. The center thermistor does not detect 100°C / 212°F or more after passing 60s during the warm-up.2. The center thermistor does not detect the specified temperature (ready indication temperature) after it detected 100°C / 212°F during the warm-up.
• Remedy: 1 Executing U169 The IH setting mismatches the power supply specification. Set the destination same as the voltage of the IH PWB at U169. U169 Execution 2 Removing foreign material There is foreign material between the fuser unit and the fuser IH unit. Or, foreign material adheres on the heat roller. Remove foreign material if it is on between the fuser unit and the fuser IH unit, or on the heat roller. Then, reinstall the fuser unit. Fuser Unit Replacement 3 Reinstalling the fuser unit The drawer connector of the fuser unit is not properly inserted. Check if the pins of the drawer connector of the fuser unit do not bend. If it bend, replace the fuser unit. When the pins are proper, reinstall the fuser unit so that the drawer connector firmly connects. Fuser Unit Replacement 4 Firmware upgrade The firmware is not the latest version. Upgrade the engine firmware to the latest version Firmware Upgrade 5 Checking the wire The wire is not properly connected or is faulty. Reinsert the following wire connectors, and replace the wires if there is no continuity.• Drawer connector of the fuser unit - Feed image PWB• Feed image PWB - Engine PWB• Fuser IH unit - IH PWB• IH PWB - Engine PWB Electrical Diagram of PWBs 6 Replacing the fuser unit The temperature cannot be detected properly due to the broken thermostat or the thermistor error. Replace the fuser unit. Fuser Unit Replacement 7 Replacing the engine PWB The engine PWB is faulty. Replace the engine PWB. Engine PWB Replacement 8 Replacing the feed image PWB The feed image PWB is faulty. Replace the feed image PWB. 9 Checking the wire The wire is not properly connected or is faulty. Reinsert the following wire connectors, and replace the wires if there is no continuity.• Fuser IH unit - IH PWB• IH PWB - Engine PWB Electrical Diagram of PWBs 10 Replacing the IH PWB The IH PWB is faulty. Replace the IH PWB. IH PWB Replacement

• Code: C6020
• Description: Center thermistor high temperature error
• Causes: The center thermistor detects 245°C / 473°F or more for 1s.
• Remedy: 1 Reinstalling the fuser unit The drawer connector of the fuser unit is not properly inserted. Check if the pins of the drawer connector of the fuser unit do not bend. If it bend, replace the fuser unit. When the pins are proper, reinstall the fuser unit so that the drawer connector firmly connects. Fuser Unit Replacement 2 Firmware upgrade The firmware is not the latest version. Upgrade the engine firmware to the latest version Firmware Upgrade 3 Checking the wire The wire is not properly connected or is faulty. Reinsert the following wire connectors, and replace the wires when they have no continuity.• Drawer connector of the fuser unit - Feed image PWB• Feed image PWB - Engine PWB Electrical Diagram of PWBs 4 Replacing the fuser unit The temperature cannot be detected properly due to the thermistor error, etc. Replace the fuser unit. Fuser Unit Replacement 5 Replacing the engine PWB The engine PWB is faulty. Replace the engine PWB. Engine PWB Replacement 6 Replacing the feed image PWB The feed image PWB is faulty. Replace the feed image PWB.

• Code: C6030
• Description: Center thermistor broken
• Causes: The center thermistor temperature is detected at less than 41°C / 104°F for 1s when the edge thermistor detects 100°C / 212°F or more during the warm-up.
• Remedy: 1 Removing foreign material There is foreign material between the fuser unit and the fuser IH unit. Or, foreign material adheres on the heat roller. Remove foreign material if it is on between the fuser unit and the fuser IH unit, or on the heat roller. Then, reinstall the fuser unit. Fuser Unit Replacement 2 Reinstalling the fuser unit The drawer connector of the fuser unit is not properly inserted. Check if the pins of the drawer connector of the fuser unit do not bend. If it bend, replace the fuser unit. When the pins are proper, reinstall the fuser unit so that the drawer connector firmly connects. Fuser Unit Replacement 3 Firmware upgrade The firmware is not the latest version. Upgrade the engine firmware to the latest version Firmware Upgrade 4 Checking the wire The wire is not properly connected or is faulty. Reinsert the following wire connectors, and replace the wires when they have no continuity.• Drawer connector of the fuser unit - Feed image PWB• Feed image PWB - Engine PWB Electrical Diagram of PWBs 5 Replacing the fuser unit The temperature is not properly detected due to the broken wire or the thermistor error in the fuser unit. Replace the fuser unit. Fuser Unit Replacement 6 Replacing the engine PWB The engine PWB is faulty. Replace the engine PWB. Engine PWB Replacement 7 Replacing the feed image PWB The feed image PWB is faulty. Replace the feed image PWB.

• Code: C6050
• Description: Center thermistor low temperature error
• Causes: The center thermistor detected less than 80°C / 176°F for 1s during printing.
• Remedy: 1 Changing the wall outlet The power voltage descends by 10% or more of the rated voltage when printing. Connect the power cord to a different wall outlet if the power supply voltage descends by 10% or more of the rated voltage. 2 Removing foreign material There is foreign material between the fuser unit and the fuser IH unit. Or, foreign material adheres on the heat roller. Remove foreign material if it is on between the fuser unit and the fuser IH unit, or on the heat roller. Then, reinstall the fuser unit. Fuser Unit Replacement 3 Reinstalling the fuser unit The drawer connector of the fuser unit is not properly inserted. Check if the pins of the drawer connector of the fuser unit do not bend. If it bend, replace the fuser unit. When the pins are proper, reinstall the fuser unit so that the drawer connector firmly connects. Fuser Unit Replacement 4 Firmware upgrade The firmware is not the latest version. Upgrade the engine firmware to the latest version Firmware Upgrade 5 Checking the wire The wire is not properly connected or is faulty. Reinsert the following wire connectors, and replace the wires when they have no continuity.• Drawer connector of the fuser unit - Feed image PWB• Feed image PWB - Engine PWB Electrical Diagram of PWBs 6 Replacing the fuser unit The temperature is not properly detected due to the broken wire or the thermistor error in the fuser unit. Replace the fuser unit. Fuser Unit Replacement 7 Replacing the engine PWB The engine PWB is faulty. Replace the engine PWB. Engine PWB Replacement 8 Replacing the feed image PWB The feed image PWB is faulty. Replace the feed image PWB. 9 Checking the wire The wire is not properly connected or is faulty. Reinsert the following wire connectors, and replace the wire when it has no continuity.• IH PWB - Engine PWB Electrical Diagram of PWBs 10 Replacing the IH PWB The IH PWB is faulty. Replace the IH PWB. IH PWB Replacement 11 Checking the wire The wire is not properly connected or is faulty. Reinsert the following wire connectors, and replace the wire when it has no continuity.• Fuser IH unit - IH PWB Electrical Diagram of PWBs 12 Replacing the fuser IH unit The fuser IH unit is faulty. Replace the fuser IH unit. Fuser IH Unit Replacement

• Code: C6120
• Description: Press thermistor high temperature error
• Causes: C6120: Press thermistor high temperature error The press thermistor detected 210°C / 410°F or more for 1s.
• Remedy: 1 Reinstalling the fuser unit The drawer connector of the fuser unit is not properly inserted. Check if the pins of the drawer connector of the fuser unit do not bend. If it bend, replace the fuser unit. When the pins are proper, reinstall the fuser unit so that the drawer connector firmly connects. Fuser Unit Replacement 2 Firmware upgrade The firmware is not the latest version. Upgrade the engine firmware to the latest version Firmware Upgrade 3 Checking the wire The wire is not properly connected or is faulty. Reinsert the following wire connectors, and replace the wires when they have no continuity.• Drawer connector of the fuser unit - Feed image PWB• Feed image PWB - Engine PWB Electrical Diagram of PWBs 4 Replacing the fuser unit The temperature cannot be detected properly due to the thermistor error, etc. Replace the fuser unit. Fuser Unit Replacement 5 Replacing the engine PWB The engine PWB is faulty. Replace the engine PWB. Engine PWB Replacement 6 Replacing the feed image PWB The feed image PWB is faulty. Replace the feed image PWB.