14 Remove one screw (callout 12) from the end of the shaft at the back of the ADF. 1 12 Figure 101. ADF optical unit (6 of 8) 15 Remove one screw from the shaft-retaining plate (callout 13). CAUTION Make sure the unit is supported before removing the shaft screws. 16 Remove one screw from the shaft and remove the shaft-retaining plate (callout 14). 14 4 13 4 Figure 102. ADF optical unit (7 of 8) 128 Chapter 6 Removal and replacement C8523-90921