Dell PowerVault 770N (Deskside NAS Appliance) - Manual (Page 36)

Replacing the Cooling Shroud
1. Lower the cooling shroud into the chassis ensuring that the cooling shroud is aligned with the rear cooling fan assembly
guides.
2. Rotate the cooling shroud down ensuring the thumbscrews are aligned with the connecting posts on the system board
(see Figure 4-7 ).
3. Tighten the two thumbscrews securing the cooling shroud to the system board.
4. Reconnect the cooling shroud fan cable to the system board.
5. Replace the cover (see " Replacing the Cover ").
System Fans
CAUTION: Only trained service technicians are authorized to remove the system cover and access any of
the components inside the system. See your System Information Guide for complete information about
safety precautions, working inside the computer, and protecting against electrostatic discharge.
The system includes the following hot-pluggable cooling fans:
Two fan assemblies containing two individual fans. One assembly is located near the SCSI backplane board. The other
fan assembly is attached to the back of the chassis.
One cooling fan located on the cooling shroud.
Removing the Front Fan Assembly
CAUTION: See "Protecting Against Electrostatic Discharge" in the safety instructions in your System
Information Guide.