Service Call Conditions 
SM Appendix  3-11  M018/M019 
Appendix: 
Trouble- 
Shooting 
Guide 
 
ITB (Image Transfer Belt) Unit Set Error 
The TM sensor does not detect the reflection from the ITB. 
490 
  No ITB unit in the machine 
 Dirty TM sensor 
1.  Check the installation of the ITB unit. 
2.  Clean the TM sensor. 
 
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