6.2.5  SC5XX: PAPER FEED AND FUSING 
 
SC No.  Level  Error Name/Error Condition/Major Cause/Solution 
502-01  B  2nd tray (option) error (lift error) 
The tray lift sensor does not detect the tray bottom plate or stack 
of paper for 10 seconds after the machine start to initialize all 
units. 
* If the machine detects an error three times consecutively, this 
SC is issued. 
   
  Tray lift motor error or harness disconnected 
  Tray lift sensor error or harness disconnected 
  Each harness damaged 
  Main board defective 
  Foreign matter, such as paper scrap, is caught between the 
tray and tray lift motor or in the tray. 
  Paper set fault 
  Bottom plate defective 
  Paper feed roller missing 
  Tray lift sensor feeler defective 
      Reload the paper. 
  Remove the foreign matter. 
  Replace the tray lift motor. 
  Reconnect the connector. 
  Replace the harness. 
  Replace the tray lift sensor. 
  Replace the main board. 
  Replace the tray. 
  Replace the paper feed roller. 
  Replace the tray lift sensor feeler. 
  Replace the bottom plate.