• Code: E551-0011
• Description: Error in the Power Supply Fan of the Insertion Unit
  The loch signal is detected for the specified times while the fan operates.
• Remedy: 1. The connector of the Fan (F1) is disconnected. 2. The wiring of the Fan (F1) is faulty. 3. The Fan (F1) is faulty. 4. The Insertion Unit Controller PCB is faulty.

• Code: E551-0021
• Description: Error in the Power Supply Fan of the Paper Folding Unit
  The loch signal is detected for the specified times while the fan operates.
• Remedy: 1. The connector of the Fan (F1) is disconnected. 2. The wiring of the Fan (F1) is faulty. 3. The Fan (F1) is faulty. 4. The Paper Folding Unit Controller PCB is faulty.

• Code: E562-8001
• Description: Error in Slowing Timing Sensor (Document Insertion/Folding Unit-H1)
  The receiving-light intensity failed to be within the threshold although the emitting-light intensity is adjusted to be within the threshold when adjusting the Sensor.
• Remedy: 1. Connector of the Slowing Timing Sensor (S24) is disconnected. 2. Slowing Timing Sensor (S24) is faulty.

• Code: E562-8002
• Description: Error in Disengagement Timing Sensor (Document Insertion/ Folding Unit-H1).
  The receiving-light intensity failed to be within the threshold although the emitting-light intensity is adjusted to be within the threshold when adjusting the Sensor.
• Remedy: 1. Connector of the Disengagement Timing Sensor (S21) is disconnected. 2. Disengagement Timing Sensor (S21) is faulty.

• Code: E562-8003
• Description: Error in Folding Position Accuracy Sensor (Document Insertion/Folding Unit-H1)
  The receiving-light intensity failed to be within the threshold although the emitting-light intensity is adjusted to be within the threshold when adjusting the Sensor.
• Remedy: 1. Connector of the Folding Position Accuracy Sensor (S23) is disconnected. 2. Folding Position Accuracy Sensor (S23) is faulty.

• Code: E562-8004
• Description: Error in the Upper Stopper HP Sensor (Document Insertion/ Folding Unit-H1)
  1. Connector of the Upper Stopper HP Sensor (S16) is disconnected. 2. Upper Stopper HP Sensor (S16) is faulty.
• Remedy: The receiving-light intensity failed to be within the threshold although the emitting-light intensity is adjusted to be within the threshold when adjusting the Sensor.

• Code: E569-8001
• Description: Upper Stopper Motor of Paper Folding Unit failed to go through HP (Document Insertion/Folding Unit-H1)
  The Upper Stopper HP Sensor failed to be OFF despite the drive of specified pulse in the case that the Upper Stopper Motor started to be driven while the Upper Stopper HP Sensor was ON.
• Remedy: 1. Connector of the Upper Stopper Motor (M7) is disconnected. 2. Upper Stopper Motor (M7) is faulty. 3. Connector of the Upper Stopper HP Sensor (S16) is disconnected. 4. Upper Stopper HP Sensor (S16) is faulty.

• Code: E569-8002
• Description: Upper Stopper Motor of Paper Folding Unit failed to return to HP (Document Insertion/Folding Unit-H1)
  The Upper Stopper HP Sensor failed to be ON despite the drive of specified pulse in the case that the Upper Stopper Motor started to be driven while the Upper Stopper HP Sensor was OFF.
• Remedy: 1. Connector of the Upper Stopper Motor (M7) is disconnected. 2. Upper Stopper Motor (M7) is faulty. 3. Connector of the Upper Stopper HP Sensor (S16) is disconnected. 4. Upper Stopper HP Sensor (S16) is faulty.