Oh, I can answer this myself, the R730xd doesn't have a display. *headdesk*
I have a new R730xd wit IDRAC8 and firmware 2.40. I was trying this: /admin1-> racadm help System.LCD.QualifierTempQualifierTemp             -- Specifies the Ambient temperature qualifierUsage                     -- C,F,Default- CRequired License          -- RACADMDependency                -- None But: /admin1-> racadm get System.LCD.QualifierTempERROR: Invalid object name specified. I also cannot set it: /admin1-> racadm set System.LCD.QualifierTemp CERROR: Invalid object name specified. I have the same problem with the other System.LCD objects.
Cannot use racadm to configure LCD on IDRAC8