3.12 Replacing the Gap/Black Mark Sensor Module 
1.  Refer to Remove the Electronics Cover to remove the electronics cover. 
2.  Disconnect the gap/black mark sensor connectors from the main board. 
 
3.  Open the media cover. At the bottom of the gap/black mark sensor module, there is a plastic tab to latch the sensor assembly 
to the mechanism. Use a piece of paper (thick stiff paper) to make it through the slot and put the paper under the tab. Pull the 
media sensor assembly out of the mechanism.