Check the trash or scratch on the encoder disc surface of the ITB rotation sensor. Check the harness connection of the ITB rotation sensor. Image transfer unit installation error.The machine detects the encoder sensor error. Check the harness connection of the ITB contact sensor. Check the harness connection of the ITB contact motor. Remedy: Check the operation of the ITB unit motor with SP5804-077.Disconnected connector of image transfer belt contact sensor or motor.Defective image transfer belt contact motor.Dirty image transfer belt contact sensor.The image transfer belt contact sensor does not detect the movement of actuator at the sensor while the polygon motor rotates.
Description: Image transfer belt contact motor error.Check if the cleaning blade of the ITB cleaning unit is rolled up. Remedy: Check the operation of the ITB unit motor with SP5804-051.The motor LOCK signal is not detected for more than two seconds while the motor START signal is on. Description: Image transfer unit motor error.
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