After you install a power supply, you can verify its functionality.
-> set /SYS/PSx clear_fault_action=true Are you sure you want to clear /SYS/PS0 (y/n)? y Set 'clear_fault_action' to 'true' ->
where x is 0 (lower power supply) or 1 (upper power supply).
-> show /SYS/PSx/V_12V value /SYS/PS0/V_12V Properties: value = 12.027 Volts ->
where x is 0 (lower power supply) or 1 (upper power supply).