• Code: SC720-70
• Description: Tray Lift Motor Error (2K/3K sheet finisher) • Motor controller detects an error (overload) (1st time is jam notification, 2nd time is SC notification). • During descent, the paper surface sensor still detects paper even after a predetermined time elapses (1st time is jam notification, 2nd time is SC notification). • During ascent, the paper surface sensor could not detect the paper surface even after a predetermined time elapses (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 • Home position sensor defective
• Remedy: • Check the motor • Check the home position sensor connection • Replace the motor • Replace the home position sensor • Replace the main board of the finisher

• Code: SC720-71
• Description: Shift Motor Error (2K/3K sheet finisher) • Motor driver detects an error (short-circuit/ overheating) (1st time, SC). • 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 • Encoder defective (*SC720-25 only) • Home position sensor defective
• Remedy: • Check the motor • Check the home position sensor connection • Replace the motor • Replace the home position sensor • Replace the main board of the finisher

• Code: SC720-72
• Description: Shift Jogger Front Motor Error (2K/3K sheet finisher) • Motor driver detects an error (short-circuit/ overheating) (1st time, SC). • 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 • Encoder defective (*SC720-25 only) • Home position sensor defective
• Remedy: • Check the motor • Check the home position sensor connection • Replace the motor • Replace the home position sensor • Replace the main board of the finisher

• Code: SC720-73
• Description: Shift Jogger Rear Motor Error (2K/3K sheet finisher) • Motor driver detects an error (short-circuit/ overheating) (1st time, SC). • 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 • Encoder defective (*SC720-25 only) • Home position sensor defective
• Remedy: • Check the motor • Check the home position sensor connection • Replace the motor • Replace the home position sensor • Replace the main board of the finisher

• Code: SC720-74
• Description: Shift Jogger Retreat Motor Error (2K/3K sheet finisher) • Motor driver detects an error (short-circuit/ overheating) (1st time, SC). • 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 • Encoder defective (*SC720-25 only) • Home position sensor defective
• Remedy: • Check the motor • Check the home position sensor connection • Replace the motor • Replace the home position sensor • Replace the main board of the finisher

• Code: SC720-75
• Description: Reverse Roller Rocking Motor Error (2K/3K sheet finisher) • Motor driver detects an error (DC motor control error) (1st time is jam notification, 2nd time is SC notification) *SC720-75, 78 only. • During movement to home, the home position could not be detected within a predetermined time (1st time is jam notification, 2nd time is SC notification). • During movement from home, the home position was detected for longer than a predetermined time (t1sec) (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 • Home position sensor defective
• Remedy: • Check the motor • Check the home position sensor connection • Replace the motor • Replace the home position sensor • Replace the main board of the finisher

• Code: SC720-77
• Description: Edge Guide Motor Error (2K/3K sheet finisher) • Motor driver detects an error (short-circuit/ overheating) (1st time, SC). • 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 • Encoder defective (*SC720-25 only) • Home position sensor defective
• Remedy: • Check the motor • Check the home position sensor connection • Replace the motor • Replace the home position sensor • Replace the main board of the finisher

• Code: SC720-78
• Description: Rear End Press Motor Error (2K/3K sheet finisher) • Motor driver detects an error (DC motor control error) (1st time is jam notification, 2nd time is SC notification) *SC720-75, 78 only. • During movement to home, the home position could not be detected within a predetermined time (1st time is jam notification, 2nd time is SC notification). • During movement from home, the home position was detected for longer than a predetermined time (t1sec) (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 • Home position sensor defective
• Remedy: • Check the motor • Check the home position sensor connection • Replace the motor • Replace the home position sensor • Replace the main board of the finisher