SC5xx: Paper Feed and Fusing
439
No. Type Details (Symptom, Possible Cause, Troubleshooting Procedures)
1. Replace the fusing motor.
2. Check or replace the harness.
3. Replace the BiCU.
4. Replace the fusing unit.
No. Type Details (Symptom, Possible Cause, Troubleshooting Procedures)
SC540-01 D Fusing motor error (While the motor is OFF)
The motor LOCK signal is not detected for 2 seconds while the motor is OFF.
• Defective motor
• Defective harness
• Defective BiCU
1. Replace the fusing motor.
2. Replace the harness.
3. Replace the BiCU.
No. Type Details (Symptom, Possible Cause, Troubleshooting Procedures)
SC541-01 A Fusing thermopile error
SC541-11 D Fusing thermopile error (Low power)
The machine detects the value of AD is the prescribed value for 0.2 consecutive seconds after
the fusing lamp is activated.
• Broken thermopile
• Connector contact failure
1. Reconnect the connector between the fusing unit and the BiCU.
2. Replace the fusing thermopile
3. Replace the harness between the fusing unit and the BiCU.
4. Replace the BiCU.
5. Replace the PSU (AC).
No. Type Details (Symptom, Possible Cause, Troubleshooting Procedures)
SC542-02 A Fusing thermopile reload error
Fusing temperature failed to reach a temperature of 80 degrees C after passing seven seconds
when:
• The machine starts warming up.
• The machine returns from energy saver mode.
• The fusing lamp is activated.
SC542-03 A Fusing thermopile reload error
Fusing temperature failed to reach the reload permit temperature after passing eight seconds
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