Service Call Conditions 
M095/M096/M099/M100 5-14  SM 
 
541 
Thermistor Error 
The thermistor output is less than 0°C for 7 seconds. 
 Disconnected thermistor 
  Defective harness connection 
1.  Check the harness connection of the thermistor. 
2.  Replace the fusing unit. 
 
  Execute "Engine Maintenance Menu" to recover the machine after 
completing the recovery procedure. Otherwise, the machine continues to 
issue this SC code and cannot be operated. 
 
542 
Print Ready Temperature Error 
  The heating roller temperature increase during a set time is not correct.   
  The fusing temperature does not reach the print ready temperature within a 
set time after the fusing lamp has turned on. 
 Defective thermistor 
  Incorrect power supply input at the main power socket 
  Defective fusing lamp 
1.  Check the voltage of the wall outlet. 
2.  Replace the fusing unit 
3.  Replace the fusing lamp. 
 
  Execute "Engine Maintenance Menu" to recover the machine after 
completing the recovery procedure. Otherwise, the machine continues to 
issue this SC code and cannot be operated.