No. Type Details (Symptom, Possible Cause, Troubleshooting Procedures)
443 C ITB unit error
The machine detects the encoder sensor error.
• Disconnect or defective harness
• Defective ITB rotation sensor
• ITB unit installation error
• Defective ITB unit motor
• ITB unit motor overload
1. Check the harness connection of the ITB rotation sensor.
2. Check the trash or scratch on the encoder disc surface of the ITB rotation
sensor.
3. Check if the ITB unit is correctly set.
4. Replace the ITB unit motor.
5. Replace the ITB unit.
No. Type Details (Symptom, Possible Cause, Troubleshooting Procedures)
452 D PTR (Paper Transfer Roller) contact error
The PTR contact sensor does not detect the movement of actuator at the sensor
while the polygon motor rotates.
• Defective PTR contact sensor
• Defective PTR contact motor
• PTR contact motor overload
• Broken +24V fuse on PSU
• Defective or disconnected harness.
• Defective BCU
Check the operation of the PTR contact motor with SP5804-085 or 086.
No operation:
1. Check the harness connection of the PTR contact motor.
2. Replace the PTR contact motor.
Operation:
1. Replace the PTR contact sensor.
6. Troubleshooting
578
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