Remove the Disk Backplane Assembly

1. Back up OpenBoot PROM variables.

   See Step 1 in Remove the Motherboard Assembly.

2. Perform the following tasks to prepare the server for disk backplane assembly removal:
   • Power Off the Server
   • Disconnect Cables From the Server
   • Remove the Server From the Rack
   • Perform Antistatic Measures
   • Remove the Top Cover
   • Remove the PCI Mezzanine Assembly
   • Remove the Memory Mezzanine Assembly
   • Remove the System Fan Assembly (Fan Tray 0)
   • Remove the SCC Module
   • Remove the Motherboard Assembly
   • Remove the SAS Expander Assembly
   • Remove the Hard Drive Fan Assembly (Fan Tray 1)
3. Remove all of the hard drives.

   Note their positions before removing. See Install a Hard Drive.

4. Remove the two bus bars that secure the disk backplane in place.
5. Remove the ribbon cables from the disk backplane.
6. Loosen the three green captive screws securing the disk backplane.
7. Slide the disk backplane upward to remove it from the chassis.
8. Place the disk backplane on an antistatic mat.