Dell PowerVault 770N (Deskside NAS Appliance) - Manual (Page 59)

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.
Removing the SCSI Backplane Board
CAUTION: Read the safety instructions in your System Information Guide.
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 ").
3. Remove the control-panel cable cover (see " Removing the Control Panel ").
4. Pull the system board straight back until it stops (see " Removing the System Board ").
5. Remove the CD/diskette drive tray (see " Removing the CD/Diskette Drive ").
6. Remove all hard drives (see " Removing a Hard Drive ").
7. Loosen the thumbscrew that secures the SCSI backplane board in the system (see Figure 4-25 ).
8. Slide the backplane board toward the right side chassis wall about 0.5 inch.
9. Lift the backplane board off of its grounding tabs.
10. Lift the backplane board and disconnect the control-panel cable from the board (see " Replacing the Control Panel ").
11. Lift the backplane board out of the system board tray (see Figure 4-25 ).
Figure 4-25. Removing and Replacing the SCSI Backplane Board