SC5xx: Paper Feed and Fusing
D0CA/D0C9/D0C8/D0CB 6-44 SM
No. Type Details (Symptom, Possible Cause, Troubleshooting Procedures)
SC557-00 C Zero Cross Frequency Error
The frequency of the power source is 66Hz or more. This SC is detected just
after the main power is turned ON.
• Noise (High frequency)
• The frequency of the utility power line is unstable.
1. Check the power supply source.
No. Type Details (Symptom, Possible Cause, Troubleshooting Procedures)
SC559-00 A Consecutive Fusing Jam
The paper jam counter for the fusing unit reaches three consecutive times
after 1st count(the Fusing Exit Sensor (S8) does not detect the paper).
After the first fusing jam, further fusing jams (the fusing exit sensor failing to
detect the paper) have occurred 3 times consecutively.
Paper jam in the fusing unit.
1. Replace the separation plate.
2. Replace the gear (fusing unit).
3. Replace the fusing unit.
4. Replace the Fusing Motor (M13).
5. Replace the gear (mainframe), if damaged.
No. Type Details (Symptom, Possible Cause, Troubleshooting Procedures)
SC561-01 A Pressure Roller Thermistor (edge: center) (TH4) Disconnection
SC561-11 D Pressure Roller Thermistor (edge: center) (TH4) Disconnection (Low
Power)
Pressure Roller Thermistor (edge: center) (TH4) detects a temperature of -20
degrees or below for 29 consecutive seconds after the fusing lamp is
activated when the machine starts, or during feeding paper or in low power.
• Disconnected or defective Fusing Thermopile (TH1)
• Disconnected or defective Pressure Roller Thermistor (edge: center)
(TH4)
• Connector contact failure
1. Check the input voltage and replace the power plug (SC561-11 only).
2. Reconnect the connectors between the fusing drawer connector, BiCU
(PCB1), and Pressure Roller Thermistor (edge: center) (TH4) .
3. Replace the Pressure Roller Thermistor (edge: center) (TH4).
4. Replace the harnesses between the BiCU (PCB1) and the fusing unit.
5. Replace the BiCU (PCB1).
To Next Page
Loading...
