• Code: 790
• Description: Over the number of the banks installed error
  Receiving a code other than the following cord: For Model S-C5: 01H 02H
• Causes: • More than 3 of the banks are installed. (Specific limitation for Model S-C5 is 2 at maximum)

• 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: Firmware update error
  This error may occur while firmware update.
• Causes: 1. Reboot the copier and complete the undone update.

• Code: 819
• Description: Kernel stop
  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
  1. Replace controller firmware

• Code: 820
• Description: Self-Diagnostic Error: CPU
  During the boot monitor program and self-diagnostic, any exception or cutin are not supposed to happen. If these happen, it is defined as SC.
• Causes: • Defective CPU device
  • Defective boot monitor program or selfdiagnostic program

• Code: 821
• Description: Self-Diagnostic Error: ASIC
  ASIC error
• Causes: • Defective controller board

• Code: 822
• Description: Self-diagnostic error: HDD (Hard Disk Drive)
  When the main switch is turned on or starting the self-diagnostic, the HDD stays busy for the specified time or more.
• Causes: • Loose connection
  • Defective HDD
  • Defective controller

• Code: 823
• Description: Self-diagnostic Error: NIB
  6101 - MAC address check sum error
  6104 - PHY IC error
  6105 - PHY IC loop-back error
• Causes: • Defective controller