Description: Agitator Motor Error The agitator motor error is detected twice for 10 msec during the initialization at power-on or after the cover is closed.
Causes: • Disconnected or defective harness. • Defective agitator motor
Remedy: 1. Check or replace the harness. 2. Replace the agitator motor.
Code: 490
Description: ITB (Image Transfer Belt) Unit Set Error The TM sensor does not detect the reflection from the ITB.
Causes: • No ITB unit in the machine • Dirty TM sensor
Remedy: 1. Check the installation of the ITB unit. 2. Clean the TM sensor.
Code: 500
Description: Main Motor Error The LOCK signal error is detected when the EGB monitors the main motor state. (This monitoring is done immediately after power-on, when the motor starts rotating, and immediately after the motor stops.)
Causes: • Disconnected or defective motor harness. • Motor slips due to excessive load
Remedy: 1. Check the harness from the main motor. Replace it if necessary.
Code: 530
Description: LSU Fan Motor Error A LOCK signal is not detected for more than ten seconds while the motor START signal is on and if this error occurs twice consecutively, this SC is issued.
Causes: • Disconnected or defective motor harness. • Defective LSU fan motor
Remedy: 1. Check or replace the motor harness. 2. Replace the LSU fan motor.
Code: 531
Description: Fusing Fan Motor Error A LOCK signal is not detected for more than ten seconds while the motor START signal is on and if this error occurs twice consecutively, this SC is issued.
Causes: • Disconnected or defective motor harness. • Defective LSU fan motor
Remedy: 1. Check or replace the motor harness. 2. Replace the fusing fan motor.
Code: 541
Description: Thermistor Error The thermistor output is less than 0°C for 7 seconds.
Remedy: 1. Check the harness connection of the thermistor. 2. Replace the fusing unit. • Execute "Fuser SC Reset" with SOM (printer models) or "Engine Maintenance Menu" (MF model) to recover the machine after completing the recovery procedure. Otherwise, the machine continues to issue this SC code and cannot be operated.