SC5xx: Paper Feed and Fusing
441
No. Type Details (Symptom, Possible Cause, Troubleshooting Procedures)
SC543-00 A Fusing thermopile overheat (software error)
Fusing thermopile detects a temperature of 240 degrees C or more for 10 seconds after the
relay is activated.
• Triac short
• Defective BiCU
1. Reconnect the connector between the fusing unit and BiCU.
2. Replace the fusing thermopile.
3. Replace the harness between the fusing unit and BiCU.
4. Replace the BiCU.
5. Replace the PSU (AC).
6. Replace the fusing unit (if the problem cannot be resolved).
No. Type Details (Symptom, Possible Cause, Troubleshooting Procedures)
SC544-00 A Fusing thermopile overheat (hardware error)
Fusing thermopile detects a temperature of 250 degrees C.
• Triac short
• Defective BiCU
• Defective fusing control system
Basically, the entire fusing unit must be replaced when SC554-00 occurs. For details, refer to
"Actions When SC544-00 or SC554-00 Occurs."
Do the following steps:
1. Inspect the fusing sleeve belt unit, and replace if damaged.
2. Reconnect the connector between the fusing unit and BiCU.
3. Replace the fusing thermopile.
4. Replace the harness between the fusing unit and BiCU.
5. Replace the BiCU.
6. Replace the PSU (AC).
No. Type Details (Symptom, Possible Cause, Troubleshooting Procedures)
SC545-01 A Fusing lamp consecutive full power
SC545-11 D Fusing lamp consecutive full power (low power)
Fusing lamp runs at full power for consecutive four seconds after reloading the machine
• Defective thermistor
• Broken fusing lamp
• Thermostat blown out.
1. Check there is paper remaining in the fusing unit.
2. Check the power supply voltage (Reconnect the power cord).
To Next Page
Loading...
