• Code: SC721-03
• Description: Protection Device Intercept Error 1 (1K sheet finisher) Fuse blowout is detected
• Causes: • Overload (board defective, harness short-circuit, solenoid defective)
• Remedy: • Replace the main board of the finisher • Replace the harness • Replace the solenoid

• Code: SC721-10
• Description: Entrance Transport Motor Error (1K sheet finisher) Motor driver detects an error state (DC motor control error). 1st error detection is determined as a jam and 2nd error detection is determined as an SC.
• Causes: • Motor defective • Connector disconnected • Overload • Encorder error
• Remedy: • Replace the entrance transport motor • Reset the connector • Replace the harness • Replace the main board of the finisher

• Code: SC721-11
• Description: Proof Transport Motor Error (1K sheet finisher) Motor driver detects an error state (DC motor control error). 1st error detection is determined as a jam and 2nd error detection is determined as an SC.
• Causes: • Motor defective • Connector disconnected • Overload • Encorder error
• Remedy: • Replace the proof transport motor • Reset the connector • Replace the harness • Replace the main board of the finisher

• Code: SC721-17
• Description: Paper Eject Transport Motor Error (1K sheet finisher) Motor driver detects an error state (DC motor control error). 1st error detection is determined as a jam and 2nd error detection is determined as an SC.
• Causes: • Motor defective • Connector disconnected • Overload • Encorder error
• Remedy: • Replace the paper eject transport motor • Reset the connector • Replace the harness • Replace the main board of the finisher

• Code: SC721-24
• Description: Paper Eject Cover Open/Close Motor Error (1K sheet finisher) • During movement to home, the home position could not be detected within a predetermined pulse (p0 pulse) (1st time is jam notification, 2nd time is SC notification). • During movement from home, the home position was detected for longer than a predetermined pulse (p1 pulse) (1st time is jam notification, 2nd time is SC notification). The return pulse to home and pulse coming from home during normal operation are calculated and measured. The pulses which are 1.5-2 times the normal operation pulse are taken as p0 and p1.
• Causes: • Motor defective • Connector disconnected • Overload • HP sensor defective
• Remedy: • Replace the paper eject cover open/close motor • Reset the connector • Replace the paper guide plate open/close sensor • Replace the harness • Replace the main board of the finisher

• Code: SC721-25
• Description: Punch Motor Error (1K sheet finisher) • During movement to home, the home position could not be detected within a predetermined time (t0 sec) (1st time is jam notification, 2nd time is SC notification). • During movement from home, the home position was detected even after a predetermined time (t1 sec) elapsed (1st time is jam notification, 2nd time is SC notification). • Output from the encoder could not be counted for a predetermined number of times within a predetermined time (t0 sec) (1st time is jam notification, 2nd time is SC notification). The time to return to home without fail, the time coming from home, and the time for which the encoder output can be counted during normal operation, are taken as t0, t1 and t2.
• Causes: • Motor defective • Connector disconnected • Overload • HP sensor defective • Encorder error
• Remedy: • Replace the punch motor • Reset the connector • Replace the punch rotation pulse senser • Replace the harness • Replace the main board of the finisher

• Code: SC721-27
• Description: Punch Movement Motor Error (1K sheet finisher) • During movement to home, the home position could not be detected within a predetermined pulse (p0 pulse) (1st time is jam notification, 2nd time is SC notification). • During movement from home, the home position was detected for longer than a predetermined pulse (p1 pulse) (1st time is jam notification, 2nd time is SC notification). The return pulse to home and pulse coming from home during normal operation are calculated and measured. The pulses which are 1.5-2 times the normal operation pulse are taken as p0 and p1.
• Causes: • Motor defective • Connector disconnected • Overload • HP sensor defective
• Remedy: • Replace the punch movement motor • Reset the connector • Replace the punch movement HP sensor • Replace the harness • Replace the main board of the finisher

• Code: SC721-28
• Description: Punch Horizontal Registration Detection Error (1K sheet finisher) • During movement to home, the home position could not be detected within a predetermined pulse (p0 pulse) (1st time is jam notification, 2nd time is SC notification). • During movement from home, the home position was detected for longer than a predetermined pulse (p1 pulse) (1st time is jam notification, 2nd time is SC notification). The return pulse to home and pulse coming from home during normal operation are calculated and measured. The pulses which are 1.5-2 times the normal operation pulse are taken as p0 and p1.
• Causes: • Motor defective • Connector disconnected • Overload • HP sensor defective
• Remedy: • Replace the paper position sensor slide motor • Reset the connector • Replace the paper position sensor • Replace the harness • Replace the main board of the finisher