Tray-Size Sensing PCA Figure 6-103 Tray-Size Sensing PCA (1 of 2) 1 Remove the Back Cover (page 374) and the Controller PCA (page 392). 2 Remove 1 screw (callout 1) from the size-sensing PCA’s holder. 3 To remove the size-sensing PCA’s holder, use a flat blade screwdriver to release the top and bottom tabs (callout 2) from the slots in the metal. C4265-90907 2 x 500-sheet Input Tray Removal and Replacement 393