Description: A failure occurred with the fuser (thermistor error).
Code: 73
Display: 73
Description: A failure occurred with the fuser (thermistor error).
Code: 74
Display: 74
Description: SSIO Error
Code: 77
Display: 77
Description: A toner sensor fault has occurred when
TOTAL DRAM COUNT is 30 or less.
Code: 79
Display: 79
Description: LED Head type Error
Code: 8
Display: 8
Description: System Call Extension
Code: 80
Display: 80
Description: I/F timeout occurred between the main control
board and the operator panel.
Code: 81
Display: 81
Description: I/F timeout occurred between the main control board and the optional tray (High Capacity Second Paper Feeder, Power Envelope Feeder, etc.).