• Code: 900
• Description: Electronic total counter error
  The value of the total counter has already exceeded 9999999
• Causes: Replace the NVRAM on the controller board

• Code: 901
• Description: Mechanical total count error
  The SBCU board cannot receive the mechanical total count data.
• Causes: Mechanical total counter defective

• Code: 951
• Description: F-gate error at write request
  After the IPU receives an F-gate signal, it receives another F-gate signal.
• Causes: • Download controller firmware • SBCU board defective

• Code: 953
• Description: Scanner setting error
  The IPU does not respond with the scanner setting signal required to start scanning processing.
• Causes: Download controller firmware

• Code: 954
• Description: Printer setting error
  The IPU does not respond with the settings that are required to start image processing by the printer.
• Causes: • Replace the IPU board • Replace the controller board • Download the controller firmware

• Code: 955
• Description: Memory setting error
  The IPU does not respond with the settings that are required to start image processing using the memory.
• Causes: • Replace the IPU board • Replace the controller board • Download the controller firmware

• Code: 964
• Description: Printer ready error
  The printer ready signal is not generated within 17 seconds after the IPU received the print start signal.
• Causes: • Replace the IPU board • Replace the controller board • Download the controller firmware

• Code: 984
• Description: Print image data transfer error
  The image transfer from the controller to the engine via the PCI bus does not end within 15 s after starting.
• Causes: • Controller board defective • SBCU board defective • Connectors between SBCU and controller loose or defective