• Code: F1-21
• Description: Finisher fan trouble
• Causes: Connection trouble of the connector and the harness. Internal paper pass unit FAN motor trouble. Finisher control PWB trouble.
• Remedy: Use SIM3-3 to check the operation of the fan. Check the finisher fan, and replace if necessary. Check the finisher control PWB, and replace if necessary. Check the connector/harness, and replace if necessary.

• Code: F1-22
• Description: Finisher assist motor trouble (INF/ 3K FIN)
• Causes: Connection trouble of the connector and the harness. Finisher assist motor trouble Home position sensor trouble Finisher control PWB trouble
• Remedy: Use SIM3-3 to check the operation of the finisher assist motor. Use SIM3-2 to check the operation of the home position sensor. Check connection of the connector and the harness. Replace the finisher assist motor. Replace the home position sensor. Replace the finisher control PWB.

• Code: F1-23
• Description: Safety switch trouble
• Causes: control PWB trouble connection trouble of harness connection trouble of connector safety switch trouble front door switch trouble front door sensor trouble
• Remedy: Check connection between the control PWB and sensor Replace the control PWB Replace safety switch Replace front door switch Replace front door sensor

• Code: F1-28
• Description: Flap motor trouble (1K FIN)
• Causes: Connection trouble of the connector and the harness. Flap motor trouble Home position sensor trouble Finisher control PWB trouble
• Remedy: Use SIM3-3 to check the operation of the flap motor. Use SIM3-2 to check the operation of the home position sensor. Check connection of the connector and the harness. Replace the flap motor. Replace the home position sensor. Replace the finisher control PWB.

• Code: F1-28
• Description: Drawing lift motor trouble (3K FIN)
• Causes: Motor lock. Control PWB trouble. Disconnection of harness. Connector connection trouble. Home position sensor trouble.
• Remedy: Use SIM3-3 to check the operation of the drawing lift motor. Use SIM3-2 to check the operation of the home position sensor. Check connection of the connector and the harness. Replace the drawing lift motor. Replace the home position sensor. Replace the finisher control PWB.

• Code: F1-29
• Description: Fuse break detection trouble (1K FIN)
• Causes: Over current (PWB breakage, harness short-circuit, solenoid trouble)
• Remedy: Use SIM3-3 to check the operation of the each motor and the solenoid. Use SIM3-2 to check the operation of the each sensor. Check connection of the connector and the harness. Replace each motor. Replace the finisher control PWB.

• Code: F1-30
• Description: Communication trouble between the finisher and the saddle (3K FIN)
• Causes: Control PWB trouble. Disconnection of harness. Connector connection trouble. Firmware of the after-process is not the latest version.
• Remedy: Check the harness and the connector connection from the finisher to the saddle. Replace the stacker control PWB. Replace the saddle control PWB. Replace the harness from the finisher to the saddle. Upgrade the firm wares of the master software and the saddle software.

• Code: F1-31
• Description: Finisher saddle motor trouble (1K FIN)
• Causes: Connection trouble of the connector and the harness. Saddle motor trouble. Finisher control PWB trouble
• Remedy: Use SIM3-3 to check the operation of the saddle motor. Check connection of the connector and the harness. Replace the saddle motor. Replace the finisher control PWB.