Oki OL1200 Service Manual page 149

70 A fault occurred in the fan motor.
71 A fault occurred in the fuser.
72 Thermistor open error
73 Thermistor short error
74 SSIO error
80 I/F timeout occurred between the
printer main unit and the operator panel.
81 I/F timeout occurred between the
printer main unit and the optional tray (2nd
tray, envelope feeder, etc.)
90 A watchdog timer timeout occurred.
F0 Monitor error (double weight)
F1 Monitor error (argument error)
F2 Optional timeout error
F3 Optional status error
Connect the fan motor cable properly.
Replace the fan motor.
Replace the Power Supply board.
See chapter 6.5.2.
See chapter 6.5.2.
See chapter 6.5.2.
See chapter 6.5.2.
See chapter 6.5.2.
See chapter 6.5.2.
Turn the power off, then on.
Replace the Control board.
Note: When replacing the Control board,
install the EEPROM mounted on the replaced
Control board
Turn the power off, then on.
Replace the Control board.
Note: When replacing the Control board,
install the EEPROM mounted on the replaced
Control board
Turn the power off, then on.
Replace the Control board.
Note: When replacing the Control board,
install the EEPROM mounted on the replaced
Control board
Turn the power off, then on.
Replace the Control board.
Note: When replacing the Control board,
install the EEPROM mounted on the replaced
Control board
Turn the power off, then on.
Replace the Control board.
Note: When replacing the Control board,
install the EEPROM mounted on the replaced
Control board