• Code: E4-27
• Description: Thermistor (TH4) High Temperature Error
• Causes: 1. Thermistor (TH1) is defective. 2. Thermistor (TH1) connector is disconnected. 3. Contact of Thermistor (TH1) and Heater Belt is abnormal. 4. Thermistor (TH4) is defective. 5. Thermistor (TH4) connector is disconnected. 6. Induction Heating (IH) PCB is defective. 7. EC PCB connector is disconnected. 8. EC PCB is defective.

• Code: E4-41
• Description: Fuser IH Core Motor Rotation
• Causes: 1. Induction Heating (IH) Core Motor is defective. 2. Induction Heating (IH) Core Motor connector is disconnected. 3. EC PCB connector is disconnected. (CN504) 4. EC PCB is defective. (Fuse is open) 5. EC PCB is defective.

• Code: E4-42
• Description: Fuser IH Core Motor Position
• Causes: 1. Induction Heating (IH) Core Motor is defective. 2. Induction Heating (IH) Core Motor connector is disconnected. 3. EC PCB connector is disconnected. (CN502) 4. EC PCB is defective. (Fuse is open) 5. EC PCB is defective.

• Code: E4-43
• Description: Fuser Roller Rotate Detection Sensor
• Causes: 1. Fuser Motor is defective. 2. Fuser Motor connector is disconnected. 3. MOTDRV PCB connector is disconnected. (CN502) 4. MOTDRV PCB is defective. (Fuse is open) 5. MOTDRV PCB is defective. 6. Rotation detect Sensor 1 is defective. 7. Rotation detect Sensor 1 connector is disconnected. 8. Rotation detect Sensor 2 is defective. 9. Rotation detect Sensor 2 connector is disconnected. 10. Fuser Unit Relay connector is disconnected.

• Code: E4-44
• Description: Fuser Input Voltage Upper Limit
• Causes: Power Voltage is too high. (Power Source is out of specification)

• Code: E4-46
• Description: Fuser Temperature Rising Error
• Causes: 1. Intermittent blackouts occur frequently. (Power Source is out of specification) 2. Induction Heating (IH) Unit is defective. 3. Induction Heating (IH) PCB is defective. 4. Fuser Unit is defective. (Heater Belt / Thermistor)

• Code: E4-48
• Description: Fuser Input Current Upper Limit
• Causes: 1. Induction Heating (IH) PCB is defective. (Check Fuse F002) 2. Induction Heating (IH) Coil is defective.

• Code: E5-01
• Description: Vp (+24V, Printer)
• Causes: 1. LVPS Output is abnormal. 2. EC PCB connector is disconnected. 3. EC PCB is defective.