Fujitsu Siemens Computers PRIMERGY TX150 S3 Service Supplement Manual page 27

Replacement routines
Ê If a second hot-plug power supply unit has been installed, remove this one
in the same way (if there is a dummy cover instead of a second hot-plug
power supply unit, this can remain in place).
I
The Power backplane in the floorstand model is positioned directly under
the top cover and it makes sense to lay the server on a table with the
uncovered side facing upward. Place the server in such a way that the
feet can project over the edge.
Ê Remove all power cables from the system board and the drives (see the
cabling plans in the Appendix of the Options Guide).
Figure 9: Removing the Power backplane
Ê Remove the knurled screw (see the circle).
Ê Push the Power backplane downward (see direction of the arrow) until it gets
out of the three bolts of the PS cage. Take out the Power backplane.
Ê Insert the new Power backplane and push the Power backplane upward until
the three bolts of the PS cage engage.
Ê Fasten the Power backplane with the knurled screw in the PS cage.
Ê Plug the power cables on the system board and the drives (see the cabling
plans in the Appendix of the Options Guide).
Ê Reinstall the hot-plug power supply unit(s).
Ê Close the server and connect all power plugs (for a detailed description see
the Options Guide).
Replacing the Power backplane
Service Supplement 21