Full Bin and Interlock Sensor PCA Figure 6-134 Full Bin and Interlock Sensor PCA (1 of 2) 1 Remove the Back Cover (page 298) and the Empty Bin Sensor PCA (page 313). 2 Unplug 4 connectors (J301, J302, J303, and J304). See callout 1. 3 Remove 4 screws from the Full Bin and Interlock Sensor PCA and one screw from the harness (callout 2). C4085-91087 7-bin Tabletop Mailbox Removal and Replacement 315