• Code: SC500
• Description: Feed pressure motor lock The sensor does not change status for more than 6 seconds after the feed pressure motor on signal is generated.
• Causes: • Defective feed pressure detection board • Defective feed pressure motor

• Code: SC501
• Description: Separation pressure motor lock The sensor does not change status for more than 6 seconds after the separation pressure motor on signal is generated.
• Causes: • Defective separation pressure detection board • Defective separation pressure motor

• Code: SC503
• Description: Feed start sensor error The sensor is not activated for more than 5 seconds after the main motor on signal is generated.
• Causes: • Defective sensor

• Code: SC505
• Description: Friction pad shift motor lock The sensor’s status remains the same after the motor turns for 5 seconds.
• Causes: • Defective sensor • Defective motor

• Code: SC512
• Description: Registration Press Motor lock The registration roller release sensor does not change the status for more than 3 seconds after the Registration press motor on signal is generated.
• Causes: • Defective motor • Defective registration roller release sensor

• Code: SC513
• Description: Main drive encoder There is no count pulse for 2 seconds when the drum is turning during duplex control initialization. The machine does not detect the Main drive encoder within 32ms after starting the paper feed motor.
• Causes: • Main drive encoder detection error • Main drive encoder or sensor defective • Duplex board error • I/O board • Main motor lock from other cause

• Code: SC514
• Description: Junction gate motor Junction gate HP sensor does not turn OFF after 3 seconds when duplex control goes to home position. Junction gate HP sensor does not turn ON after 3 seconds when duplex control goes to home position but is not at home position.
• Causes: • Junction gate HP sensor error • Junction gate motor error • Duplex board error • Motor locked from other cause

• Code: SC520
• Description: Paper table lock (paper table lower limit sensor) When the table moves upwards, the sensor does not change status for more than 7.5 seconds after the paper table motor on signal is generated.
• Causes: • Defective sensor • Defective motor • Mechanism blocked by foreign material • Defective gear • A spring has come off