162SEP 2004Ver. 1.2DP-1520P/1820P/1820EE4: Fuser Unit ErrorCode Function Possible Cause(s)E4- 01 Fuser Warm-up Temperature 1. Fuser Thermistor dirty.2. Thermistor position incorrect.3. Thermistor defective.4. Thermistor connector disconnected.5. Fuser Lamp connector disconnected.6. Fuser Lamp defective.7. Fuser Thermostat defective.8. Thermal Fuse defective.9. SPC PCB connector disconnected.10. SPC PCB defective.11. Fuser temperature low. (Adjust F6-31)E4- 02 Fuser Paper Jam 1. Paper Jam in Fuser Unit.2. Paper Exit Sensor disconnected.3. Paper Exit Sensor defective.4. SPC PCB connector disconnected.5. SPC PCB defective.E4- 10 Fuser Fan Motor Rotation 1. Fuser Fan connector disconnected.2. Fuser Fan defective.3. SPC PCB connector disconnected.4. SPC PCB defective.5. PS defective.E5: System ErrorCode Function Possible Cause(s)E5- 11 Printer Engine CommunicationAbnormal1. SPC PCB connector disconnected.2. SPC PCB defective.3. SC PCB connector disconnected.4. SC PCB defective.E5- 17 Scanner SynchronizationE5- 19 Scanner Line SynchronizationE5- 40 Sort Memory Abnormal 1. Sort Memory defective.2. SC PCB connector disconnected.3. SC PCB defective.E5- 42 Total Counter Connection 1. Total Counter connector disconnected.2. Total Counter defective.3. SPC PCB connector disconnected.4. SPC PCB defective.E5- 60 Power Supply Cooling FanMotor Rotation1. Cooling Fan connector disconnected.2. Cooling Fan defective.3. SPC PCB connector disconnected.4. SPC PCB defective.5. PS defective.E7: Optional Unit ErrorCode Function Check PointsE7- 90 Hardware Key Abnormal 1. Incorrect Hardware Key installed.2. Hardware Key defective.
