• Code: 501
• Description: Paper Tray 1 error
  • When the tray lift motor rotates counterclockwise, (if the upper limit is not detected within 10 seconds), the machine asks the user to reset the tray. • When the tray lift motor rotates clockwise, (if the upper limit is not detected within 1.5 seconds), the machine asks the user to reset the tray. If one of these conditions occurs three consecutive times, the SC is generated.
• Causes: • Disconnected or defective paper lift sensor • Disconnected or defective tray lift motor • Defective bottom plate lift mechanism • Too much paper in the tray • Defective IOB
• Remedy: 1. Check if the paper is not loaded too much. 2. Check if the bottom plate smoothly moves up and down manually. 3. Check and / or replace the tray lift motor / paper lift sensor. 4. Replace the IOB.

• Code: 502
• Description: Paper Tray 2 error
  • When the tray lift motor rotates counterclockwise, (if the upper limit is not detected within 10 seconds), the machine asks the user to reset the tray. • When the tray lift motor rotates clockwise, (if the upper limit is not detected within 1.5 seconds), the machine asks the user to reset the tray. If one of these conditions occurs three consecutive times, the SC is generated.
• Causes: • Disconnected or defective paper lift sensor • Disconnected or defective tray lift motor • Defective bottom plate lift mechanism • Too much paper in the tray • Defective IOB
• Remedy: 1. Check if the paper is not loaded too much. 2. Check if the bottom plate smoothly moves up and down manually. 3. Check and / or replace the tray lift motor / paper lift sensor. 4. Replace the IOB.

• Code: 503-01
• Description: Tray 3 error (Paper Feed Unit or LCT)
  For the paper feed unit: • When the tray lift motor is turned on, the upper limit is not detected within 10 seconds For the LCT: • SC 503-01 occurs if the upper or lower limit is not detected within 8 seconds when the tray lift motor is turned on to lift or lower the tray.
• Causes: For the paper feed unit: • Defective tray lift motor or connector disconnection • Defective lift sensor or connector disconnection For the LCT: • Defective stack transport clutch or connector disconnection • Defective tray motor or connector disconnection • Defective end fence home position sensor or connector disconnection • Defective upper limit sensor or connector disconnection • Defective tray lift motor or connector disconnection
• Remedy: 1. Check the cable connections. 2. Check and/or replace the defective component.

• Code: 503-02
• Description: Tray 3 error (Paper Feed Unit or LCT)
  This SC is generated if the following condition occurs 3 consecutive times. For the paper feed unit: • When the tray lowers, the tray lift sensor does not go off within 1.5 sec. For the LCT: • When the main switch is turned on or when the LCT is set, if the end fence is not in the home position (home position sensor ON), the tray lift motor stops. • If the upper limit does not go off for 1.5 seconds even the tray lift motor turns on to lower the tray after the upper limit has been detected at power on.
• Causes: For the paper feed unit: • Defective tray lift motor or connector disconnection • Defective lift sensor or connector disconnection For the LCT: • Defective stack transport clutch or connector disconnection • Defective tray motor or connector disconnection • Defective end fence home position sensor or connector disconnection
• Remedy: 1. Check the cable connections. 2. Check and/or replace the defective component.

• Code: 504-01
• Description: Tray 4 error (Paper Feed Unit or LCT) For the two-tray paper feed unit When the tray lift motor is turned on, the upper limit is not detected within 10 seconds. If this condition occurs three consecutive times, the SC is generated. For the LCT If the upper or lower limit is not detected within 8 seconds when the tray lift motor is turned on to lift up or lower the tray
• Causes: • Defective tray lift motor or connector disconnection • Defective lift sensor or connector disconnection
• Remedy: 1. Check the cable connections. 2. Check and/or replace the defective component.

• Code: 504-02
• Description: Tray 4 error (3 Tray Paper Feed Unit)
  This SC is generated if the following condition occurs 3 consecutive times. For the two-tray paper feed unit • When the tray lowers, the tray lift sensor does not go off within 1.5 sec. For the LCT • If the upper limit does not go off for 1.5 seconds even the tray lift motor turns on to lower the tray after the upper limit has been detected at power on.
• Causes: • Defective tray lift motor or connector disconnection • Defective lift sensor or connector disconnection
• Remedy: 1. Check the cable connections. 2. Check and/or replace the defective component.

• Code: 505-1
• Description: 5th tray lift malfunction (optional LCT)
  This SC is generated if the following condition occurs: • When the tray lift sensor of the LCT 1200-sheet does not go on after the tray lift motor has turned on to lift the paper tray. • When the tray lift sensor of the LCT 1200-sheet does not go off after the tray lift motor has turned on to lower the paper tray. • When the tray lift sensor of the LCT 1200-sheet does not go on after the pickup roller solenoid has turned on at power on.
• Causes: • Tray lift motor defective or disconnected • Tray lift sensor defective or disconnected
• Remedy:

• Code: 505-2
• Description: 5th tray lift malfunction (optional LCT)
  Both tray lift sensor and lower limit sensor are turned on at the same time when the main power is turned on or the right door is closed.
• Causes: • Tray lift motor defective or disconnected • Tray lift sensor defective or disconnected • Lowe limit sensor defective or disconnected
• Remedy: