• Code: 683
• Description: RFID: Unit check error
  The machine gets RFID communication error even the toner cartridges have not been installed in the machine
• Causes: Caused by noise
• Remedy: Turn the main power switch off and on.

• Code: 687
• Description: Memory address command error
  The EGB does not receive a memory address command from the controller 120 seconds after paper is in the position for registration.
• Causes: • Loose connection • Defective controller • Defective EGB
• Remedy: 1. Check if the controller is firmly connected to the BCU. 2. Replace the controller. 3. Replace the BCU.

• Code: 690
• Description: GAVD communication error
  • The I2C bus device ID is not identified during initialization. • A device-status error occurs during I2C bus communication. • The I2C bus communication is not established due to an error other than a buffer shortage.
• Causes: • Loose connection • Defective EGB • Defective LD controller board
• Remedy: 1. Turn the main switch off and on. 2. Check the cable connection. 3. Replace the laser optics-housing unit. 4. Replace the BCU.

• Code: 721
• Description: Jogger motor error
  • Jogger HP sensor does not detect the jogger fence for 2000ms after the jogger unit has moved to its home position. • Jogger HP sensor does not turn off 300 ms after the jogger unit has moved from its home position. The 1st detection failure issues a jam error, and the 2nd failure issues this SC code.
• Causes: • Defective jogger HP sensor • Overload on the jogger motor • Defective jogger motor • Defective main board • Disconnected or defective harness
• Remedy: 1. Check the connections and cables for the components mentioned above. 2. Replace the jogger HP sensor (if the jogger motor works correctly). 3. Replace the jogger motor (if the jogger motor does not work). 4. Replace the finisher main board.

• Code: 723
• Description: Stack feed-out motor error
  • Stack feed-out HP sensor does not detect the home position of the stack feedout belt 3000ms after the stack feed-out belt has moved to its home position. • Stack feed-out HP sensor does not turn off 200 ms after the stack feed-out belt has moved from its home position. The 1st detection failure issues a jam error, and the 2nd failure issues this SC code
• Causes: • Defective stack feed-out HP sensor • Overload on the stack feed-out motor • Defective stack feed-out motor • Defective main board • Disconnected or defective harness
• Remedy: 1. Check the connections and cables for the components mentioned above. 2. Replace the stack feed-out HP sensor (if the stack feed-out motor works correctly). 3. Replace the stack feed-out motor (if the stack feed-out motor does not work). 4. Replace the finisher main board.

• Code: 725
• Description: Finisher exit guide plate motor error
  After moving away from the guide plate position sensor, the exit guide is not detected at the home position within the prescribed time. The 1st detection failure issues a jam error, and the 2nd failure issues this SC code.
• Causes: • Guide plate motor disconnected, defective • Guide plate motor overloaded due to obstruction • Guide plate position sensor disconnected, defective
• Remedy: 1. Check the connections and cables for the components mentioned above. 2. Check for blockages in the guide plate motor mechanism. 3. Replace the guide plate position sensor and/or guide plate motor. 4. Replace the finisher main board.

• Code: 730
• Description: Finisher Tray 1 shift motor error
  The shift roller HP sensor of the upper tray does not activate within the prescribed time after the shift tray starts to move toward or away from the home position. The 1st detection failure issues a jam error, and the 2nd failure issues this SC code.
• Causes: • Shift tray HP sensor of the upper tray disconnected, defective • Shift tray motor of the upper tray is disconnected, defective • Shift tray motor of the upper tray overloaded due to obstruction
• Remedy: 1. Check the connections and cables for the components mentioned above. 2. Check for blockages in shift motor mechanism. 3. Replace the shift tray HP sensor and/or shift motor 4. Replace the finisher main board.

• Code: 740
• Description: Finisher corner stapler motor error
  The 1st detection failure issues a jam error, and the 2nd failure issues this SC code. For the 3000-sheet finisher • Staple movement is not finished after a certain time. For the 1000-sheet booklet finisher • The stapler motor does not switch off within the prescribed time after operating. • The HP sensor of the staple unit does not detect the home position after the staple unit moves to its home position. • The HP sensor of the staple unit detects the home position after the staple unit moves from its home position.
• Causes: • Staple jam • Motor overload • Defective stapler motor
• Remedy: 1. Check the connections and cables for the components mentioned above. 2. Replace the HP sensor and/or stapler motor 3. Replace the finisher main board.