• Code: 72
• Display:
• Description: A failure occurred with the fuser (thermistor error).

• Code: 73
• Display:
• Description: A failure occurred with the fuser (thermistor error).

• Code: 74
• Display:
• Description: SSIO Error

• Code: 77
• Display:
• Description: A toner sensor fault has occurred when
  TOTAL DRAM COUNT is 30 or less.

• Code: 8
• Display:
• Description: System Call Extension

• Code: 80
• Display:
• Description: I/F timeout occurred between the main control
  board and the operator panel.

• Code: 81
• Display:
• Description: I/F timeout occurred between the main control board and the optional tray (High Capacity Second Paper Feeder, Power Envelope Feeder, etc.).

• Code: 9
• Display:
• Description: Break Point Exception