3.  Remove all power:
a.  Disconnect each power cord from the power source.
b.  Disconnect each power cord from the  server.
4.  Disconnect all peripheral cables from the  server.
5.  Remove the server from the  rack.
6.  Place the server on a flat, level work surface.
7.  Remove the access panel.
8.  Remove the DIMM blank:
CAUTION:CAUTION:
To prevent improper cooling and thermal damage, do not operate the  server unless all DIMM slots have either a DIMM
or a DIMM blank installed.
a.  Open the DIMM slot latches (callout 1).
b.  Lift the blank from the DIMM slot (callout 2).