Q about power-off command in T2000's OBP

Hi Experts

I have a question about power-off command included in T2000's OBP.
I find following explanation in LDOM 1.0.1 manual, also found same info
in T5440's manual as well.

   Result of an OpenBoot power-off Command
   The OpenBoot power-off command does not power down a system.
   To power down a system while in OpenBoot firmware, use your system controller’s
   or system processor’s poweroff command. The OpenBoot power-off command displays
   the following message:

   NOTICE: power-off command is not supported, use appropriate
   NOTICE: command on System Controller to turn power off.

Now I have one Sun Fire T2000 here and did several patterns below.  I did not configure any LDOM in it.