• Code: 732
• Description: Finisher upper tray shift motor error
  The upper tray shift motor does not stop within the specified time.
• Causes: • Upper tray shift motor defective or overloaded • Upper tray shift sensor defective

• Code: 733
• Description: Finisher lower tray lift motor error
  The stack height sensor does not activate within a certain time period after the lower tray lift motor turned on.
• Causes: • Lower tray lift motor defective or overloaded • Upper stack height sensor defective • Lower tray lower limit sensor defective

• Code: 734
• Description: Finisher lower tray shift motor error
  The lower tray shift motor driving the lower tray does not stop within the specified time.
• Causes: • Lower tray shift motor defective or overloaded • Lower tray shift sensor defective

• Code: 740
• Description: Booklet finisher error 1: Not Saddle Stitch
• Causes:

• Code: 741
• Description: Booklet finisher error 2: Saddle Stitch
• Causes:

• Code: 818
• Description: Watchdog error
  The bus is being held by another device, or a CPU-device infinite loop has occurred. A module that the watchdog is monitoring has not closed properly at the conclusion of its task, or the module cannot continue processing.
• Causes: • System program defective; switch off/on, or change the controller firmware if the problem cannot be solved • Controller board defective • Controller option malfunction

• Code: 819
• Description: Fatal kernel error
  Due to a control error, a RAM overflow occurred during system processing. One of the following messages was displayed on the operation panel.
• Causes: • System program defective • Controller board defective • Optional board defective • Replace controller firmware

• Code: 820
• Description: Self-Diagnostic Error: CPU
• Causes: • Controller board defective • Software defective