Dell PowerVault 775N (Rackmount NAS Appliance) - Manual (Page 68)

Replacing the SCSI Backplane Board
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. Lower the backplane board into the system board tray.
2. Connect the control-panel cable to the SCSI backplane board (see Figure 4-5 ).
NOTICE: To avoid damage to the system, align the bottom of the backplane board in the board's mounting grooves
before rotating the top of the board onto the grounding tabs (see Figure 4-25 ).
3. Align the bottom of the backplane board in the board's mounting grooves (see Figure 4-25 ).
4. Rotate the top of the backplane board onto the board's grounding tabs.
5. Slide the backplane board toward the left side chassis wall about 0.5 inch.
6. Tighten the thumbscrew on the backplane board.
7. Install all SCSI hard drives (see " Installing a Hard Drive ").
8. Replace the CD/diskette drive tray (see " Replacing the CD/Diskette Drive Tray ").