• Code: F77-91
• Description: FN-112/6/ 121/10/115 abnormality
  Communication abnormality in FNS CB (FNS control board) when sub-CPU receives data.
• Causes: FNS CB (FNS control board)

• Code: F77-92
• Description: FN-112/6/ 121/10/115 abnormality
  Communication abnormality in FNS CB (FNS control board) when main CPU receives data
• Causes: FNS CB (FNS control board)

• Code: F80-11
• Description: ISW abnormality
  When SW2 (sub power) was turned ON, an area which had not been written by ISW was detected in the printer control program.
• Causes: PRCB program

• Code: F80-30
• Description: ISW abnormality
  When data is transferred by ISW, normal header information cannot be received within the specified time.
• Causes: Printer cable PC parallel port

• Code: F80-31
• Description: ISW abnormality
  When data is transferred by ISW, a checksum error or header error was detected in the downloaded data.
• Causes: Printer cable Program file error

• Code: F80-32
• Description: ISW abnormality
  When data is transferred by ISW, data cannot be written to the flash ROM properly.
• Causes: Printer cable Program transfer destination board

• Code: F80-40
• Description: ISW abnormality
  When SW2 (sub power) was turned ON, an area which had not been written by ISW was detected in the FNS program.
• Causes: FNS program

• Code: F80-41
• Description: ISW abnormality
  When SW2 (sub power) was turned ON, an area which had not been written by ISW was detected in the FNS program.
• Causes: ZU program