• Code: 672
• Description: Controller-to-operation panel communication error at startup
  After powering on the machine, the communication circuit between the controller and the operation panel is not opened, or communication with controller is interrupted after a normal startup.
• Causes: • Controller stall • Controller board installed incorrectly • Controller board defective • Operation panel connector loose or defective

• Code: 720
• Description: Finisher jogger motor error (500-sheet finisher)
  The finisher jogger H.P sensor remains de-activated for a certain time when returning to home position. The finisher jogger H.P sensor remains activated for a certain time when moving away from home position.
• Causes: • Jogger H.P sensor defective • Jogger motor defective

• Code: 722
• Description: Finisher jogger motor error (1000-sheet finisher)
  The finisher jogger H.P sensor remains de-activated for a certain time when returning to home position. The finisher jogger H.P sensor remains activated for a certain time when moving away from home position.
• Causes: • Jogger H.P sensor defective • Jogger motor defective

• Code: 724
• Description: Finisher staple hammer motor error (1000-sheet finisher)
  Stapling does not finish within 600 ms after the staple hammer motor turned on.
• Causes: • Staple jam • Stapler overload caused by trying to staple too many sheets • Staple hammer motor defective

• Code: 725
• Description: Finisher stack feed-out motor error (1000-sheet finisher)
  The stack feed-out belt H.P sensor does not activate within a certain time after the stack feed-out motor turned on.
• Causes: • Stack feed-out H.P sensor defective • Stack feed-out motor defective

• Code: 726
• Description: Finisher lift motor error (1000-sheet finisher)
  The stack height sensor does not activate within a certain time after the shift tray lift motor turned on.
• Causes: • Shift tray lift motor defective • Stack height sensor defective

• Code: 727
• Description: Finisher staple hammer motor error (500-sheet finisher)
  Stapling does not finish within a certain time after staple hammer motor turned on.
• Causes: • Staple jam • Stapler overload caused by trying to staple too many sheets • Staple hammer motor defective

• Code: 728
• Description: Finisher paper stack height error (500sheet finisher)
  The stack height detection lever does not return to its home position before going to detect the stack height.
• Causes: • Stack height lever solenoid defective • Stack height sensor defective • Lever sensor defective • Main control board defective