Ricoh MPC3503SP

• Code: SC548-00
• Description: Fusing Rotation Detection During heating, there is no input to the edge of the rotation sensor (t7) ms.
• Causes: • Motor defective • Sensor defective • Sensor actuator/feeler modification/defective
• Remedy: • Replace the motor • Replace the sensor • Replace the actuator/feeler • Replace the fusing unit

• Code: SC551-01
• Description: Fusing Edge Thermopile Disconnection Below -50 degrees C (or below CB) is detected for (t11) seconds continuously.˜
• Causes: • Thermopile disconnection • Connector disconnected
• Remedy: • Replace the thermopile • Reset the connector • Replace the connector • Replace the fusing unit

• Code: SC551-02
• Description: Edge NC Sensor Disconnection 3ED - 3FF (FB voltage: 3.243V-3.300V) is detected for (t13) seconds continuously (NC sensor center: detection & compensation NC sensor edge: detection & compensation). Detection period: 100 ms, detection frequency: 10 times or more.
• Causes: • NC sensor disconnection • Connector disconnected
• Remedy: • Replace the NC sensor • Reset the connector • Replace the connector • Replace the fusing unit

• Code: SC551-03
• Description: Edge NC Sensor Short-circuit AD value: 0-13 (FB voltage: 0.000V-0.041V) (*3) is detected for (t14) seconds continuously. Detection period: 100 ms, detection frequency: 10 times or more.
• Causes: • NC sensor short-circuit • Connector disconnected
• Remedy: • Replace the NC sensor • Reset the connector • Replace the connector • Replace the fusing unit

• Code: SC552-02
• Description: Fusing Central Thermopile Does Not Reload (T21) degrees C not reached after heater 1 ON for (t3) seconds.
• Causes: • Thermopile lens dirt • Thermopile modification, float • Outside input voltage guarantee • After excessive temperature rise prevention unit operation
• Remedy: • Replace the thermopile • Make sure that the input voltage is within acceptable limits • Replace the fusing unit

• Code: SC552-03
• Description: Fusing Central Thermopile Does Not Reload Heating edge reload permission temperature not reached after heater 1 ON for (t312) seconds.
• Causes: • Thermopile lens dirt • Thermopile modification, float • Outside input voltage guarantee • After excessive temperature rise prevention unit operation
• Remedy: • Replace the thermopile • Make sure that the input voltage is within acceptable limits • Replace the fusing unit