Locate a Faulty Power Supply

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You must determine which power supply is faulty before you replace it.

Check to see if any System Service Required LEDs are lit or flashing.
See Front Panel Components (Service).

Visually inspect the power supplies to see if any of their status LEDs are lit or flashing.
See Power Supply LEDs.

In Oracle ILOM, check the health of the power system.
```
-> show /System/Power 
 /System/Power
 	Targets:
 	Properties:
 		health = OK
 		health_details = -
...
->
```
If the health_details property identifies a faulty power supply, replace it. See Remove a Power Supply.

Check the health of the individual power supplies.
```
-> show /System/Power/Power_Supplies/Power_Supply_x 
 /System/Power/Power_Supplies/Power_Supply_0
 	Targets:
 	Properties:
 		health = OK
 		health_details = -
...
->
```
where x is either 0 (lower power supply) or 1 (upper power supply).

If the health_details property identifies the power supply as faulty, replace it. See Remove a Power Supply.

Determine if a power supply is faulty.
For example, type:
```
-> show faulty
Target              | Property               | Value
--------------------+------------------------+-------------------------------
/SP/faultmgmt/0     | fru                    | /SYS/PS0
...
->
```
- If a FRU value different from /SYS/PSx is displayed, see Component Service Task Reference to identify which component is faulty.
- If a power supply is faulty, you will see /SYS/PSx under the Value heading, where x is 0 (lower power supply) or 1 (upper power supply).

Use the Oracle ILOM faultmgmt shell to identify the faulty component.
See Identify Faulted Components.

Check the Fault class and Description fields for more information.

Within the Oracle ILOM interface, verify the voltage output.

-> show /SYS/PS0/V_+12V value
 /SYS/PS0/V_+12V
 	Properties:
 		value = 12.031 Volts
->

If you are unable to determine if a power supply is faulty, seek further information.
See Detecting and Managing Faults.