• Code: F1-20
• Description: Finisher alignment operation trouble R
• Causes: Finisher paper alignment motor lock. Motor speed abnormality. Over-current to the motor. Home position sensor trouble. Finisher control PWB trouble.
• Remedy: Use SIM3-3 to check the operation of the paper alignment motor. Replace the paper alignment motor (FPAM-F). Replace the home position sensor. Replace the finisher control PWB.

• Code: F1-21
• Description: Finisher paper delivery unit cooling fan trouble
• Causes: Finisher paper delivery unit cooling fan motor trouble. Finisher control PWB trouble. Harness and connector connection trouble.
• Remedy: Use SIM3-3 to check the operation of the paper delivery unit cooling fan motor. Replace the paper delivery unit cooling fan motor (PDCF). Replace the finisher control PWB. Check connection of the connector and the harness.

• Code: F1-23
• Description: Finisher shutter trouble
• Causes: Motor lock trouble. Control PWB trouble. Home position sensor trouble. Connection harness/connector connection trouble.
• Remedy: Check the operation of the rear edge assist motor with SIM3-3. Check connection from the control PWB to the motor. Replace the control PWB. Replace the sensor.

• Code: F1-25
• Description: Finisher paper transport roller lift motor trouble
• Causes: Finisher paper transport roller lift motor lock trouble. Home position sensor trouble. Finisher control PWB trouble.
• Remedy: Use SIM3-3 to check the operation of the paper transport roller lift motor. Replace the paper transport roller lift motor (FPTRLM). Replace the home position sensor. Replace the finisher control PWB.

• Code: F1-28
• Description: Finisher paper alignment roller lift motor trouble
• Causes: Finisher paper alignment roller lift motor lock trouble. Home position sensor trouble. Finisher control PWB trouble.
• Remedy: Use SIM3-3 to check the operation of the paper alignment roller lift motor. Replace the paper alignment roller lift motor (FARLM). Replace the home position sensor. Replace the finisher control PWB.

• Code: F1-30
• Description: Finisher - Saddle unit communication trouble
• Causes: Connector and harness connection trouble. Finisher control PWB trouble.
• Remedy: Check connection of the connector and the harness. Turn OFF/ON the power. Replace the finisher control PWB.

• Code: F1-31
• Description: Saddle paper folding trouble
• Causes: Saddle paper transport motor trouble. Saddle paper folding mechanism trouble. Finisher control PWB trouble. Home position sensor trouble.
• Remedy: Use SIM3-3 to check the operation of the saddle paper folding. Replace the saddle paper transport motor (FSPTM). Check and repair the saddle paper folding mechanism. Replace the finisher control PWB Replace the home position sensor.

• Code: F1-33
• Description: Punch unit shift operation trouble
• Causes: Punch shift motor trouble. Finisher control PWB trouble. Home position sensor trouble. Harness and connector connection trouble.
• Remedy: Check the punch operation. Replace the punch motor. Replace the finisher control PWB. Replace the home position sensor. Check connection of the connectors and the harness.