• Code: C6000
• Description: IH heating error 1 After warm-up is started, the center thermistor does not reach 100°C / 212°F even 60s passed. Or, during the warm-up, specified temperature (Ready display temperature) is not detected even 420s passed after center thermistor reached 100°C / 212°F.
• 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. Maintenanc e Mode List 2 Removing foreign material There are foreign objects between the fuser unit and the fuser IH unit. Or, the foreign objects are adhered on the fuser belt. If there are foreign objects between the fuser unit and the fuser IH unit, or on the fuser belt, remove them. After that, reinstall the fuser unit. Detaching and reattaching the Fuser Unit 3 Reinstalling the fuser unit The foreign objects adhere on the drawer connection terminal of the fuser unit. Or, the drawer connector is not inserted completely. Clean the drawer connection terminal of the fuser unit. Check the pin of the drawer connector is not bent, and replace the fuser unit if it is bent. If the pin is normal, reinstall the fuser unit so that the drawer connector is securely connected. Detaching and reattaching the Fuser Unit 4 Firmware upgrade The firmware is not the latest version. Upgrade the engine firmware to the latest version Firmware Update 5 Checking the connection The connector is not connected properly, or the wire is faulty. Clean the terminal of the following wire connectors and reconnect the connectors. If there is no continuity, replace the wire. . Drawer connector of the fuser unit - Feed image PWB . Feed image PWB - Engine PWB . Fuser IH unit - IH PWB . IH PWB - Engine PWB Section 8 "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. Detaching and reattaching the Fuser Unit 7 Replacing the engine PWB The engine PWB is faulty. Replace the engine PWB. Detaching and reattaching the Engine PWB 8 Replacing the feed image PWB The feed image PWB is faulty. Replace the feed image PWB. 9 Checking the connection The connector is not connected properly, or the wire is faulty. Clean the terminal of the following wire connectors and reconnect the connectors. If there is no continuity, replace the wire. . Fuser IH unit - IH PWB . IH PWB - Engine PWB Section 8 "PWBs" 10 Replacing the IH PWB The IH PWB is faulty. Replace the IH PWB. Detaching and reattaching the IH PWB

• Code: C6020
• Description: Center thermistor high temperature error The center thermistor detects 245°C / 473°F or more for 1s.
• Remedy: 1 Reinstalling the fuser unit The foreign objects adhere on the drawer connection terminal of the fuser unit. Or, the drawer connector is not inserted completely. Clean the drawer connection terminal of the fuser unit. Check the pin of the drawer connector is not bent, and replace the fuser unit if it is bent. If the pin is normal, reinstall the fuser unit so that the drawer connector is securely connected. Detaching and reattaching the Fuser Unit 2 Firmware upgrade The firmware is not the latest version. Upgrade the engine firmware to the latest version Firmware Update 3 Checking the connection The connector is not connected properly, or the wire is faulty. Clean the terminal of the following wire connectors and reconnect the connectors. If there is no continuity, replace the wire. . Drawer connector of the fuser unit - Feed image PWB . Feed image PWB - Engine PWB Section 8 "PWBs" 4 Replacing the fuser unit The temperature cannot be detected properly due to the thermistor error, etc. Replace the fuser unit. Detaching and reattaching the Fuser Unit 5 Replacing the engine PWB The engine PWB is faulty. Replace the engine PWB. Detaching and reattaching the Engine PWB 6 Replacing the feed image PWB The feed image PWB is faulty. Replace the feed image PWB.

• Code: C6030
• Description: Center thermistor broken 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. Detaching and reattaching the Fuser Unit 2 Reinstalling the fuser unit The foreign objects adhere on the drawer connection terminal of the fuser unit. Or, the drawer connector is not inserted completely. Clean the drawer connection terminal of the fuser unit. Check the pin of the drawer connector is not bent, and replace the fuser unit if it is bent. If the pin is normal, reinstall the fuser unit so that the drawer connector is securely connected. Detaching and reattaching the Fuser Unit 3 Firmware upgrade The firmware is not the latest version. Upgrade the engine firmware to the latest version Firmware Update 4 Checking the connection The connector is not connected properly, or the wire is faulty. Clean the terminal of the following wire connectors and reconnect the connectors. If there is no continuity, replace the wire. . Drawer connector of the fuser unit - Feed image PWB . Feed image PWB - Engine PWB Section 8 "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. Detaching and reattaching the Fuser Unit 6 Replacing the engine PWB The engine PWB is faulty. Replace the engine PWB. Detaching and reattaching the Engine PWB 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 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. Detaching and reattaching the Fuser Unit 3 Reinstalling the fuser unit The foreign objects adhere on the drawer connection terminal of the fuser unit. Or, the drawer connector is not inserted completely. Clean the drawer connection terminal of the fuser unit. Check the pin of the drawer connector is not bent, and replace the fuser unit if it is bent. If the pin is normal, reinstall the fuser unit so that the drawer connector is securely connected. Detaching and reattaching the Fuser Unit 4 Firmware upgrade The firmware is not the latest version. Upgrade the engine firmware to the latest version Firmware Update 5 Checking the connection The connector is not connected properly, or the wire is faulty. Clean the terminal of the following wire connectors and reconnect the connectors. If there is no continuity, replace the wire. . Drawer connector of the fuser unit - Feed image PWB . Feed image PWB - Engine PWB Section 8 "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. Detaching and reattaching the Fuser Unit 7 Replacing the engine PWB The engine PWB is faulty. Replace the engine PWB. Detaching and reattaching the Engine PWB 8 Replacing the feed image PWB The feed image PWB is faulty. Replace the feed image PWB. 9 Checking the connection The connector is not connected properly, or the wire is faulty. Clean the terminal of the following wire connectors and reconnect the connectors. If there is no continuity, replace the wire. . IH PWB - Engine PWB Section 8 "PWBs" 10 Replacing the IH PWB The IH PWB is faulty. Replace the IH PWB. Detaching and reattaching the IH PWB 11 Checking the connection The connector is not connected properly, or the wire is faulty. Clean the terminal of the following wire connectors and reconnect the connectors. If there is no continuity, replace the wire. . Fuser IH unit - IH PWB Section 8 "PWBs" 12 Replacing the fuser IH unit The fuser IH unit is faulty. Replace the fuser IH unit.

• Code: C6120
• Description: Press thermistor high temperature error The press thermistor detected 210°C / 410°F or more for 1s.
• Remedy: 1 Reinstalling the fuser unit The foreign objects adhere on the drawer connection terminal of the fuser unit. Or, the drawer connector is not inserted completely. Clean the drawer connection terminal of the fuser unit. Check the pin of the drawer connector is not bent, and replace the fuser unit if it is bent. If the pin is normal, reinstall the fuser unit so that the drawer connector is securely connected. Detaching and reattaching the Fuser Unit 2 Firmware upgrade The firmware is not the latest version. Upgrade the engine firmware to the latest version Firmware Update 3 Checking the connection The connector is not connected properly, or the wire is faulty. Clean the terminal of the following wire connectors and reconnect the connectors. If there is no continuity, replace the wire. . Drawer connector of the fuser unit - Feed image PWB . Feed image PWB - Engine PWB Section 8 "PWBs" 4 Replacing the fuser unit The temperature cannot be detected properly due to the thermistor error, etc. Replace the fuser unit. Detaching and reattaching the Fuser Unit 5 Replacing the engine PWB The engine PWB is faulty. Replace the engine PWB. Detaching and reattaching the Engine PWB 6 Replacing the feed image PWB The feed image PWB is faulty. Replace the feed image PWB.

• Code: C6130
• Description: Press thermistor broken 1. During warm-up, press thermistor detects less than 35 ° C for 60s continuously. 2. After finishing warm-up, press thermistor detects less than 35 ° C for 10s continuously.
• 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. Detaching and reattaching the Fuser Unit 2 Reinstalling the fuser unit The foreign objects adhere on the drawer connection terminal of the fuser unit. Or, the drawer connector is not inserted completely. Clean the drawer connection terminal of the fuser unit. Check the pin of the drawer connector is not bent, and replace the fuser unit if it is bent. If the pin is normal, reinstall the fuser unit so that the drawer connector is securely connected. Detaching and reattaching the Fuser Unit 3 Firmware upgrade The firmware is not the latest version. Upgrade the engine firmware to the latest version Firmware Update 4 Checking the connection The connector is not connected properly, or the wire is faulty. Clean the terminal of the following wire connectors and reconnect the connectors. If there is no continuity, replace the wire. . Drawer connector of the fuser unit - Feed image PWB . Feed image PWB - Engine PWB Section 8 "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. Detaching and reattaching the Fuser Unit 6 Replacing the engine PWB The engine PWB is faulty. Replace the engine PWB. Detaching and reattaching the Engine PWB 7 Replacing the feed image PWB The feed image PWB is faulty. Replace the feed image PWB.

• Code: C6200
• Description: IH heating error 2 The detected temperature of the edge thermistor does not reach 80 ° C within 60s after warm-up starts. During the warm-up, the detected temperature of the edge thermistor does not reach the ready display temperature within 420s after reaching 100 ° C.
• 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. Detaching and reattaching the Fuser Unit 2 Reinstalling the fuser unit The foreign objects adhere on the drawer connection terminal of the fuser unit. Or, the drawer connector is not inserted completely. Clean the drawer connection terminal of the fuser unit. Check the pin of the drawer connector is not bent, and replace the fuser unit if it is bent. If the pin is normal, reinstall the fuser unit so that the drawer connector is securely connected. Detaching and reattaching the Fuser Unit 3 Firmware upgrade The firmware is not the latest version. Upgrade the engine firmware to the latest version Firmware Update 4 Checking the connection The connector is not connected properly, or the wire is faulty. Clean the terminal of the following wire connectors and reconnect the connectors. If there is no continuity, replace the wire. . Drawer connector of the fuser unit - Feed image PWB . Feed image PWB - Engine PWB Section 8 "PWBs" 5 Replacing the fuser unit Correct temperature cantbedetectedduetothewireb reakageorthethermistorerrorin thefuserunit.Or,thefuserbeltisf aulty.' Replace the fuser unit. Detaching and reattaching the Fuser Unit 6 Replacing the engine PWB The engine PWB is faulty. Replace the engine PWB. Detaching and reattaching the Engine PWB 7 Replacing the feed image PWB The feed image PWB is faulty. Replace the feed image PWB. 8 Checking the connection The connector is not connected properly, or the wire is faulty. Clean the terminal of the following wire connectors and reconnect the connectors. If there is no continuity, replace the wire. . IH PWB - Engine PWB Section 8 "PWBs" 9 Replacing the IH PWB The IH PWB is faulty. Replace the IH PWB. Detaching and reattaching the IH PWB 10 Checking the connection The connector is not connected properly, or the wire is faulty. Clean the terminal of the following wire connectors and reconnect the connectors. If there is no continuity, replace the wire. . Fuser IH unit - IH PWB Section 8 "PWBs" 11 Replacing the fuser IH unit The fuser IH unit is faulty. Replace the fuser IH unit.

• Code: C6220
• Description: Edge thermistor high temperature error The edge thermistor detected 245°C / 473°F or more for 1s.
• Remedy: 1 Reinstalling the fuser unit The foreign objects adhere on the drawer connection terminal of the fuser unit. Or, the drawer connector is not inserted completely. Clean the drawer connection terminal of the fuser unit. Check the pin of the drawer connector is not bent, and replace the fuser unit if it is bent. If the pin is normal, reinstall the fuser unit so that the drawer connector is securely connected. Detaching and reattaching the Fuser Unit 2 Firmware upgrade The firmware is not the latest version. Upgrade the engine firmware to the latest version Firmware Update 3 Checking the connection The connector is not connected properly, or the wire is faulty. Clean the terminal of the following wire connectors and reconnect the connectors. If there is no continuity, replace the wire. . Drawer connector of the fuser unit - Feed image PWB . Feed image PWB - Engine PWB Section 8 "PWBs" 4 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. Detaching and reattaching the Fuser Unit 5 Replacing the engine PWB The engine PWB is faulty. Replace the engine PWB. Detaching and reattaching the Engine PWB 6 Replacing the feed image PWB The feed image PWB is faulty. Replace the feed image PWB. 7 Replacing the fuser IH unit The fuser IH unit is faulty. Replace the fuser IH unit. 8 Reattaching the edge fan motor The edge fan motor is not properly attached. Reattach the edge fan motor. Fan Motors Attachable Direction