Ê "Disconnecting power cords" on page 54
Ê Remove all HDD / SSD modules from the server as described in section 
"Removing 3.5-inch HDD modules" on page 118.
V CAUTION!
Ensure that all hard disk drives are uniquely identified so that you can 
reinsert them into their original bays after replacing the HDD 
backplane.
Ê "Getting access to the component" on page 55
Ê "Removing the fan box" on page 154
7.3.1.2 Removing the 4x 3.5-inch SAS HDD backplane 1
Figure 32: Disconnecting cables from the 4x 3.5-inch HDD SAS backplane
Ê Disconnect all cables from the 4x 3.5-inch HDD SAS backplane 1:
– SAS / SATA cable (1)
– Power cable (2)
– If applicable OOB cable (3)
– If applicable ODD cable (4)
Ê Remove the three screws.