Hitachi DS240 Service Manual page 75

I H I A D (G SKU)
NSTALLING THE ARDWARE NSTALLING AN IR UCT ENERAL
3. Carefully lower the air duct in the chassis. Make sure the air duct is secured in place.
Figure 2-39. Installing the Air Duct (General SKU)
4. Intall the mainboard sled. See Installing a Mainboard Sled on page 2-13.
2-33