SC4xx: Image Processing
433
SC4xx: Image Processing
No. Type Details (Symptom, Possible Cause, Troubleshooting Procedures)
SC442-00 D Image transfer belt contact motor error
ITB contact HP sensor cannot detect the sensor feeler condition within a specified time even
when the ITB contact motor rotates.
• Contact/Release: 5 sec.
• Homing: 10 sec.
• Sampling interval: 0.01 sec.
• Broken harness or defective connectors
• Disconnected connector of ITB contact sensor or motor
• Defective ITB contact motor
• Image transfer belt unit not installed
1. Set the ITB unit firmly.
2. Replace the ITB unit.
3. Clean the ITB contact HP sensor.
4. Check the harnesses.
5. Replace the ITB contact HP sensor.
6. Replace the ITB contact motor.
No. Type Details (Symptom, Possible Cause, Troubleshooting Procedures)
SC491-00 C High voltage power: Charge/Development bias output error
Incorrect PWM signal is detected 10 times for consecutive 0.02 sec.
Hardware related causes:
• Contact failure
• Loose connector (Controller side)
• Grounding, open-circuit in the high voltage route
• Arc discharge due to lack of space
• Shorted harness (Controller side)
• BiCU malfunction (Signal error)
• Power pack (Development/Transfer) failure
Load related causes:
• Short-circuit
• Arc discharge due to lack of space
• Deteriorated drum (overcurrent)
• Condensated drum (overcurrent)
• Incorrect gap between drum and charge roller (incorrect PCDU)
• PCDU not installed firmly
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