Dell PowerVault 775N (Rackmount NAS Appliance) - Manual (Page 69)

9. If necessary, install the SCSI backplane daughter card (see " Installing the SCSI Backplane Daughter Card ").
10. Replace the system board tray (see " Replacing the System Board Tray ").
11. Replace the control-panel cable cover (see " Replacing the Control-Panel Cable Cover ").
12. Replace the cover (see " Replacing the Cover ").
13. Reconnect your system and peripherals to their electrical outlets, and turn on the system.
System Board Tray
See Figure 5-3 to identify the system board components.
Removing the System Board Tray
CAUTION: Before you perform this procedure, read the safety instructions in your System Information
document.
CAUTION: See "Protecting Against Electrostatic Discharge" in the safety instructions in your System
Information document.
1. Turn off the system, including any attached peripherals, and disconnect the system from the electrical outlet.
2. Remove the cover (see " Removing the Cover ").
NOTICE: To prevent damage to the system board tray levers, rotate the levers simultaneously to remove or replace
the system board tray.
3. Rotate the system board tray levers up simultaneously until the tray releases from the chassis (see Figure 4-26 ).
Figure 4-26. Removing and Installing the System Board Tray