BX900 S2 Upgrade and Maintenance Manual 169
Midplane
12.2 Replacing the midplane
12.2.1 Required tools
● Preliminary and concluding steps: tool-less
● Replacing the midplane:
– Phillips PH2 / (+) No. 2 screw driver
12.2.2 Preliminary steps
Before replacing the midplane, perform the following steps:
Ê If applicable, open the rack door as described in section "Opening the rack
door" on page 48.
Ê Locate the desired system unit as described in section "Determining the
error class" on page 45.
Ê Shut down the system unit as described in section "Shutting down the
system unit" on page 49.
Ê Make a note of the positions of the individual server blades and storage
blades, the connection blades, PSUs, fan modules and dummy modules in
the system unit for reinstallation.
Ê Remove the AC power cords from the cable ties and disconnect them from
the PSUs as described in section "Disconnecting the power cords" on
page 49.
Ê Remove all server blades and storage blades from the system unit as
described in section "Removing / installing server blades and storage
blades" on page 54.
Ê Disconnect the cables from the connection blades.
Field Replaceable Units (FRU)
Average task duration: 55 minutes
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