• Code: 782
• Description: Z-Fold upper stopper motor
  The upper stopper was not detected at the home position after the motor remained on long enough to move it 128.7 mm.
• Causes: • Upper stopper motor disconnected, defective
  • Upper stopper motor overloaded due to obstruction
  • Upper stopper HP sensor disconnected, defective

• Code: 784
• Description: Z-fold timing unit fold timing sensor adjustment error
  The A/D (Digital/Analog) input value did not change even after the D/A (Digital/Analog) output value changed.
• Causes: • Fold timing sensor connector loose, broken, defective
  • Fold timing sensor defective
  • Fold timing sensor, mylar covered with paper dust
  • Mylar disconnected

• Code: 785
• Description: Z-fold leading edge sensor adjustment error
  The A/D input value did not change even after the D/A output value changed
• Causes: • Leading edge sensor connector loose, broken, defective
  • Leading edge sensor defective
  • Leading edge sensor, mylar covered with paper dust
  • Mylar disconnected

• Code: 786
• Description: Z-fold EEPROM error
  The write operation to the Z-folding EEPROM failed after 2 attempts
• Causes: • EEPROM defective

• Code: 790
• Description: Finisher staple trimming hopper full
  The staple waste hopper is full of cut staples
• Causes: • If the hopper is full, empty the hopper
  • If the hopper is not full, the hopper full sensor is disconnected, defective

• Code: 817
• Description: Monitor Error
  This is a file detection and electronic file signature check error when the boot loader attempts to read the selfdiagnostic module, system kernel, or root system files from the OS Flash ROM, or the items on the SD card in the controller slot are false or corrupted.
• Causes: • OS Flash ROM data defective; change the controller firmware
  • SD card data defective; use another SD card

• Code: 818
• Description: Watchdog error
  While the system program is running, a bus hold or interrupt program goes into an endless loop, preventing any other programs from executing.
• 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