• Code: SC536-01
• Description: Paper cooling pipe fan lock. When a motor is on, the lock sensor is checked every 100 milliseconds. If lock signal is missing 51 times consecutively, the machine determines that the motor is not running correctly.
• Causes: • Motor defective • Connecter disconnected • Harness broken • IOB defective
• Remedy: • Replace the motor. • Reconnect the connector. • Replace the harness. • Replace the IOB.

• Code: SC537-01
• Description: Ozone Exhaust Fan Lock. When a motor is on, the lock sensor is checked every 100 milliseconds. If lock signal is missing 51 times consecutively, the machine determines that the motor is not running correctly.
• Causes: • Motor defective • Connecter disconnected • Harness broken • IOB defective
• Remedy: • Replace the motor. • Reconnect the connector. • Replace the harness. • Replace the IOB.

• Code: SC538-01
• Description: ID Sensor Cleaning Fan Lock. When a motor is on, the lock sensor is checked every 100 milliseconds. If lock signal is missing 51 times consecutively, the machine determines that the motor is not running correctly.
• Causes: • Motor defective • Connecter disconnected • Harness broken • IOB defective
• Remedy: • Replace the motor. • Reconnect the connector. • Replace the harness. • Replace the IOB.

• Code: SC539-01
• Description: Paper Transport Belt Fan/Front Lock. When a motor is on, the lock sensor is checked every 100 milliseconds. If lock signal is missing 51 times consecutively, the machine determines that the motor is not running correctly.
• Causes: • Motor defective • Connecter disconnected • Harness broken • IOB defective
• Remedy: • Replace the motor. • Reconnect the connector. • Replace the harness. • Replace the IOB.

• Code: SC539-02
• Description: Paper Transport Belt Fan/Rear Lock. When a motor is on, the lock sensor is checked every 100 milliseconds. If lock signal is missing 51 times consecutively, the machine determines that the motor is not running correctly.
• Causes: • Motor defective • Connecter disconnected • Harness broken • IOB defective
• Remedy: • Replace the motor. • Reconnect the connector. • Replace the harness. • Replace the IOB.

• Code: SC540-00
• Description: Fusing Motor: Lock The IOB detects the fusing motor lock error (rotation speed out of specification). Vodka assignment: GPIO29DATA[7] Details: When the motor is on, each lock signal is checked every 100 milliseconds. If the High status is detected 20 times consecutively, the machine determines that the motor is not running correctly. The machine issues an SC and stops the motor.
• Causes: • Motor defective • Connecter disconnected • Harness broken • IOB defective • Unit torque increased.
• Remedy: • Replace the motor. • Reconnect the connector. • Replace the harness. • Replace the IOB. • Replace the unit. • Replace the driven unit.

• Code: SC541-00
• Description: Sensor 1: Heating Roller Center Disconnection 0 degrees or lower was detected for (t1) seconds consecutively. Number of times: 10 or more D135 (Japan): 50 (seconds) D136 (Japan)/D135 (NA): 50 (seconds) D136 (NA)/D135 (EU)/D136(EU): 50 (seconds) D137 (Japan): 50 (seconds) D138 (Japan)/D137 (NA)/D138 (NA)/D137 (EU)/D138 (EU): 50 (seconds) Monitored at: All times, though SC is not issued when temperature is not controlled (when in off mode/sleep mode, when a door, excluding the toner supply door, is open, or when the heater relay is off).
• Causes: • Thermopile disconnection • Connecter contact failure
• Remedy: • Replace the thermopile. • Reconnect the connector. • Replace the connector. • Replace the connector.

• Code: SC542-02
• Description: Sensor 1: Heating Roller Center: Reload Failure: Timeout 1 Failed to reach (T2) degrees centigrade after (t4) seconds from the start of heater control. D135 (Japan):T2 = 80, t4 = 100 D136 (Japan)/D135 (NA): T2 = 80, t4 = 80 D136 (NA)/D135 (EU)/D136(EU): T2 = 80, t4 = 80 D137 (Japan): T2 = 80, t4 = 80 D138 (Japan)/D137 (NA)/D138 (NA)/D137 (EU)/D138 (EU): T2 = 80, t4 = 80 Monitored at: Startup (Power-on, when a cover is closed, when fuser heater is under control)
• Causes: • Thermopile lens smudged • Input voltage out of specification
• Remedy: • Replace the thermopile. • Use with supported input voltage • Replace the IH coil/IH inverter. • Replace the unit.