HP CB900s i4 Disassembly Instructions Manual page 10

Remove screws and set
aside for reuse.
Unplug cables
(3 plc)
Leave these 2 cables attached at
the bus bar.
Upper
Midplane
Qty 10
Lower
Midplane
Qty 10
Remove upper and lower airframes.
Remove midplanes.
FIGURE 19
Remove last midplane screw.
Remove midplanes
Unplug cables
(4 plc)
Remove these four cables. Note the cable
routing through the cable clips.
FIGURE 20