Ricoh MPC3503SP

• Code: SC540-00
• Description: Fusing Motor: Lock During motor ON, after checking lock signals for 2sec, a High level was detected at least 20 times.
• Causes: • Motor defective • Connector disconnected • Harness broken • IOB defective • Unit torque increased
• Remedy: • Replace the motor • Reset the connector • Replace the harness • Replace the IOB • Replace the unit

• Code: SC541-01
• Description: Fusing Central Thermopile Disconnection Below -50 degrees C (or below CB) is detected for (t11) seconds continuously.
• Causes: • disconnection • Connector disconnected
• Remedy: • Replace the thermopile • Reset the connector • Replace the connector • Replace the unit

• Code: SC541-02
• Description: Central 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: • Reset the NC sensor • Reset the connector • Replace the connector • Replace the unit

• Code: SC541-03
• Description: Central 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 short-circuit • Connector disconnected
• Remedy: • Reset the NC sensor • Reset the connector • Replace the connector • Replace the unit

• Code: SC542-02
• 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 • Check that the input voltage is within acceptable limits • Replace the unit

• Code: SC542-03
• Description: Fusing central thermopile does not reload Heating central reload permission temperature not reached after heater 1 ON for (t311) seconds.
• Causes: • Thermopile lens dirt • Thermopile modification/float • Outside input voltage guarantee • After excessive temperature rise prevention unit operation
• Remedy: • Replace the thermopile • Check that the input voltage is within acceptable limits • Replace the unit