• Code: C801
• Description: Finisher paper conveying motor problem 2 • The paper conveying motor lockup signal is detected for 0.5 s or longer.
• Causes: The paper conveying motor connector makes poor contact. The paper conveying motor malfunctions. Defective finisher main PCB.
• Remedy: Reinsert the connector. Also check for continuity within the connector cable. If none, remedy or replace the cable. Replace the paper conveying motor and check for correct operation. Replace the finisher main PCB and check for correct operation.

• Code: C803
• Description: Finisher paper conveying belt problem 2 • An on-to-off or off-to-on state change of the paper conveying belt home position sensor is not detected within 2 s of the paper conveying belt clutch turning on.
• Causes: The paper conveying belt is out of phase. The paper conveying belt clutch malfunctions. The paper conveying belt home position sensor malfunctions. The paper conveying belt home position sensor connector makes poor contact. The internal tray is incorrectly inserted
• Remedy: Adjust the paper conveying belt so that it is in phase and check for correct operation. Replace the paper conveying belt clutch and check for correct operation. Replace the paper conveying belt home position sensor and check for correct operation. Reinsert the connector. Also check for continuity within the connector cable. If none, remedy or replace the cable. Check whether the internal tray unit or front cover catches are damaged.

• Code: C814
• Description: Finisher tray elevation motor problem 2 • The sort tray is not detected in the home position within 30 s of the start of the tray elevation motor rotation.
• Causes: The tray elevation motor connector makes poor contact. The tray elevation motor malfunctions. Defective finisher main PCB.
• Remedy: Reinsert the connector. Also check for continuity within the connector cable. If none, remedy or replace the cable. Replace the tray elevation motor and check for correct operation. Replace the finisher main PCB and check for correct operation.

• Code: C817
• Description: Finisher front jogger motor problem 2 • While the front jogger is not detected in the home position, the front jogger home position sensor does not detect the jogger within 1.5 s of the start of front jogger motor clockwise rotation. • After the front jogger is detected in the home position, the front jogger home position sensor still detects the jogger within 0.5 s of the start of front jogger motor counterclockwise rotation.
• Causes: The front jogger motor connector makes poor contact. The front jogger motor malfunctions. The front jogger motor home position sensor connector makes poor contact. The front jogger motor home position sensor malfunctions. Defective finisher main PCB.
• Remedy: Reinsert the connector. Also check for continuity within the connector cable. If none, remedy or replace the cable. Replace the front jogger motor and check for correct operation. Reinsert the connector. Also check for continuity within the connector cable. If none, remedy or replace the cable. Replace the front jogger home position sensor and check for correct operation. Replace the finisher main PCB and check for correct operation.

• Code: C818
• Description: Finisher rear jogger motor problem 2 • While the rear jogger is not detected in the home position, the rear jogger home position sensor does not detect the jogger within 1.5 s of the start of rear jogger motor clockwise rotation. • After the rear jogger is detected in the home position, the rear jogger home position sensor still detects the jogger within 0.5 s of the start of rear jogger motor counterclockwise rotation.
• Causes: The rear jogger motor connector makes poor contact. The rear jogger motor malfunctions. The rear jogger motor home position sensor connector makes poor contact. The rear jogger motor home position sensor malfunctions. Defective finisher main PCB.
• Remedy: Reinsert the connector. Also check for continuity within the connector cable. If none, remedy or replace the cable. Replace the rear jogger motor and check for correct operation. Reinsert the connector. Also check for continuity within the connector cable. If none, remedy or replace the cable. Replace the rear jogger home position sensor and check for correct operation. Replace the finisher main PCB and check for correct operation.

• Code: C821
• Description: Finisher front stapler problem 2 • The front stapler home position sensor does not change state from non-detection to detection within 0.2 s of the start of front stapler motor counterclockwise (forward) rotation. • During initialization, the front stapler home position sensor does not change state from non-detection to detection within 0.6 s of the start of front stapler motor clockwise (reverse) rotation.
• Causes: The front stapler connector makes poor contact. The front stapler malfunctions. a) The front stapler is blocked with a staple. b) The front stapler is broken. Defective finisher main PCB.
• Remedy: Reinsert the connector. Also check for continuity within the connector cable. If none, remedy or replace the cable. a) Remove the front stapler cartridge, and check the cartridge and the stapling section of the stapler. b) Replace the front stapler and check for correct operation. Replace the finisher main PCB and check for correct operation.

• Code: C822
• Description: Finisher rear stapler problem 2 • The rear stapler home position sensor does not change state from non-detection to detection within 0.2 s of the start of rear stapler motor counterclockwise (forward) rotation. • During initialization, the rear stapler home position sensor does not change state from non-detection to detection within 0.6 s of the start of rear stapler motor clockwise (reverse) rotation.
• Causes: The rear stapler connector makes poor contact. The rear stapler malfunctions. a) The rear stapler is blocked with a staple. b) The rear stapler is broken. Defective finisher main PCB.
• Remedy: Reinsert the connector. Also check for continuity within the connector cable. If none, remedy or replace the cable. a) Remove the rear stapler cartridge, and check the cartridge and the stapling section of the stapler. b) Replace the rear stapler and check for correct operation. Replace the finisher main PCB and check for correct operation.

• Code: C920
• Description: Deck paper conveying motor problem 1 • No pulse is input within 500 ms of the start-up. • No pulse is input within 100 ms of the previous pulse input.
• Causes: The deck paper conveying motor connector makes poor contact. Defective deck paper conveying motor PCB. The deck paper conveying motor does not rotate correctly (the motor is overloaded).
• Remedy: Reinsert the connector. Also check for continuity within the connector cable. If none, remedy or replace the cable. Replace the deck paper conveying motor PCB and check for correct operation. Check the gears and remedy if necessary.