NOTE
When an automatic shutdown is performed, a "1903 system error ... Shut down the system and reboot it." message is generated to the system log. Ignore this message.
From the System (s) menu, on the Menu Panel, select Exit.
When the confirmation message box displays, select Yes.
When the second confirmation message box displays, select Yes.
After a brief delay, the Startup window opens.
Select Shutdown.
After a brief delay, the message box displays to allow you to turn off the computer.
At the power panel, set the Operate/Standby switch (1) to Standby.
The power indicator (2) is off.