• Code: F0-70
• Description: Communication trouble between the finisher and the folding unit
• Causes: Noise on the communication line, control PWB trouble, disconnection of connector or harness.
• Remedy: Turn OFF/ON the power. Check connection between the finisher and the folding unit. Replace the control PWB of the folding unit.

• Code: F0-71
• Description: Folding unit lead edge holding guide motor section abnormality (FLM10)
• Causes: Motor lock, control PWB trouble, disconnection of harness or connector, HP sensor breakdown.
• Remedy: Use SIM3-3 to check the operation of the folding unit lead edge holding guide motor. Check connection from the control PWB to the motor and the sensor. Replace the control PWB, the motor, and the sensor part.

• Code: F0-72
• Description: Folding unit backup RAM trouble
• Causes: Folding unit control PWB trouble, EEPROM chip breakdown
• Remedy: Replace the folding unit control PWB.

• Code: F0-73
• Description: Folding unit power fan abnormality
• Causes: Motor lock, motor harness short/open, control PWB trouble, disconnection of harness or connector.
• Remedy: Check connection from the control PWB to the fan motor. Replace the control PWB. Replace the fan motor.

• Code: F0-74
• Description: Folding unit folding tray paper exit motor section abnormality (FLM14)
• Causes: Motor lock, control PWB trouble, disconnection of harness or connector, HP sensor breakdown
• Remedy: Use SIM3-3 to check the operation of the folding unit folding tray paper exit motor. Check connection from the control PWB to the motor and the sensor. Replace the control PWB, the motor, and the sensor part.

• Code: F0-75
• Description: Folding unit upper stopper motor section abnormality (FLM8)
• Causes: Motor lock, control PWB trouble, disconnection of harness or connector, HP sensor breakdown.
• Remedy: Use SIM3-3 to check the operation of the folding unit upper stopper motor. Check connection from the control PWB to the motor and the sensor. Replace the control PWB, the motor, and the sensor part.

• Code: F0-76
• Description: 3-fold stopper motor section in the folding unit is abnormal (FLM9)
• Causes: Motor lock, control PWB trouble, disconnection of harness or connector, HP sensor breakdown.
• Remedy: Use SIM3-41 to check the operation of the 3-fold stopper motor in the folding unit. Check connection from the control PWB to the motor and the sensor. Replace the control PWB, the motor, and the sensor part.

• Code: F0-77
• Description: Folding unit transport motor section abnormality (FLM11)
• Causes: Motor lock, control PWB trouble, disconnection of harness or connector.
• Remedy: Use SIM3-41 to check the operation of the folding unit transport motor. Check connection from the control PWB to the motor and the sensor. Replace the control PWB, the motor.