• Code: SC721-30
• Description: Jogger Motor 1 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 jogger motor • Reset the connector • Replace the jogger HP sensor • Replace the harness • Replace the main board of the finisher

• Code: SC721-33
• Description: Positioning Roller 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 positioning roller motor • Reset the connector • Replace the positioning roller HP sensor • Replace the harness • Replace the main board of the finisher

• Code: SC721-41
• Description: Release Claw 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 even after a predetermined pulse (p1 pulse) elapsed (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 release claw motor • Reset the connector • Replace release claw HP sensor • Replace the harness • Replace the main board of the finisher

• Code: SC721-42
• Description: Stapler Transfer 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 even after a predetermined pulse (p1 pulse) elapsed (1st time is jam notification, 2nd time is SC notification). • During movement from home, retreat sensor ON could not be detected even after a predetermined pulse (p2 pulse) elapsed (1st time is jam notification, 2nd time is SC notification). • During initialization, retreat sensor ON was detected simultaneously when the home position is detected (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, p1 and p2.
• Causes: • Motor defective • Connector disconnected • Overload • HP sensor defective • Retreat sensor error
• Remedy: • Replace the stapler transfer motor • Reset the connector • Replace the stapler transfer HP sensor • Replace the harness • Replace the main board of the finisher

• Code: SC721-44
• Description: Stapler Error (1K sheet finisher) • Motor driver detects an error (short-circuit and overheating) (1st time is SC). • During movement to home, the home position could not be detected even after a predetermined time (t0 sec) elapsed (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). • During motor drive, the 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: • Staple jam • Motor defective • Connector disconnected • Overload • HP sensor defective • Encorder error
• Remedy: • Replace the stapler unit • Reset the connector • Replace the harness • Replace the main board of the finisher

• Code: SC721-52
• Description: Folding Blade Motor Error (1K sheet finisher) • Motor driver detects an error (short-circuit and overheating) (1st time is 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 • Center-folding blade HP sensor, or center-foliding cam HP sensor defective
• Remedy: • Replace the folding blade motor • Reset the connector • Replace the center-folding blade HP sensor • Replace the harness • Replace the main board of the finisher

• Code: SC721-53
• Description: Trailing Edge Stopper 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 trailing edge stopper motor • Reset the connector • Replace the trailing edge stopper HP sensor • Replace the harness • Replace the main board of the finisher

• Code: SC721-58
• Description: Paper Bundle Transport Upper Pressure Release 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 bundle transport upper pressure release motor • Reset the connector • Replace the stapler tray paper detection sensor • Replace the harness • Replace the main board of the finisher