To reinstall Make sure that the seating pegs are lined up with the seating tabs (callout 7) before reinstalling the scan engine. CAUTION The seating tabs can become disengaged when removing the copy/scan unit. If a tab becomes disengaged, make sure you replace it before reinstalling the copy/scan unit. WARNING! Position your hands carefully when reinstalling the copy/scan unit to prevent pinching your fingers. 7 Figure 192. Scan engine (7 of 7) 188 Chapter 6 Removal and replacement C8523-90921