Service Call Conditions 
M018/M019 3-12 SM Appendix 
SC 5xx (Motor and Fusing Error) 
 
Transport/Fusing Motor Error 
The LOCK signal error is detected when the EGB monitors the transport/fusing 
motor state. (This monitoring is done immediately after power-on, when the motor 
starts rotating, and immediately after the motor stops.) 
500 
  Disconnected or defective motor harness. 
  Motor slips due to excessive load   
1.  Check the harness from the transport/fusing motor. Replace it if 
necessary. 
 
LSU Fan Motor Error 
A LOCK signal is not detected for more than ten seconds while the motor START 
signal is on and if this error occurs twice consecutively, this SC is issued. 
530 
  Disconnected or defective motor harness. 
  Defective LSU fan motor 
1.  Check or replace the motor harness. 
2.  Replace the LSU fan motor. 
 
Fusing Fan Motor Error 
A LOCK signal is not detected for more than ten seconds while the motor START 
signal is on and if this error occurs twice consecutively, this SC is issued. 
531 
  Disconnected or defective motor harness. 
  Defective LSU fan motor 
1.  Check or replace the motor harness. 
2.  Replace the fusing fan motor. 
 
http://www.manuals4you.com