• Code: C851
• Description: Sorter stapler jam--The stapler fails to return to the home position during initialization. The stapler fails to return to the home position during operation. The stapler motor current exceeds 5 A for 30 ms (with the sorter).

• Code: C852
• Description: Sorter stapler motor problem--A block signal fails to be input from the home sensor within 100 ms after the stapler motor has turned on. Home signal fails to be input within 250 ms after the block signal has been emitted.

• Code: C860
• Description: Sorter shutter motor problem (auto stacker)--The sorter shutter fails to close during initialization. The sorter shutter fails to close during initialization. The sorter shutter fails to open during operation. The sorter shutter fails to close during operation.

• Code: C861
• Description: Hand table motor problem (auto stacker)--The hand table fails to return to the home position during initialization. The hand table fails to return to the home position during initialization. The hand table fails to move to the standby position during operation. The hand unit fails to move to the standby position during operation. The hand unit fails to return to the home position for paper ejection.

• Code: C862
• Description: Hand unit drive motor problem (auto stacker)--The hand unit fails to return to the home position during initialization. The hand table fails to return to the home position during initialization. The hand table fails to move to the standby position during operation. The hand unit fails to move to the standby position during operation. The hand unit fails to return to the home position for paper ejection.

• Code: C863
• Description: Stapler-sorter-stacker communication problem--An error occurs during serial communication between the stapler-sorter and the auto-stacker.

• Code: C910
• Description: RDH original feed motor problem--No pulse is generated by the pulse sensor for 800 ms or longer while the RDH original feed motor is rotating.

• Code: C920
• Description: RDH original conveying motor problem--No pulses are generated by the pulse sensor for 800 ms or longer while the RDH original conveying motor is rotating. No pulses are generated by the pulse sensor for 800 ms or longer while the RDH original conveying motor is rotating.