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130 SPARC Enterprise T5120 and T5220 Servers Service Manual • July 2009
FIGURE: Power Supply LEDs (SPARC Enterprise T5120 Server Shown)
The following table describes the three power supply LEDs
Note – If a power supply fails and you do not have a replacement available, leave
the failed power supply installed to ensure proper airflow in the server.
Related Information
■ “Servicing Power Distribution Boards” on page 160
TABLE: Power Supply Status LEDs
Legend LED Icon Color
1 OK Green This LED lights when the power supply DC
voltage from the PSU to the server is within
tolerance.
2 Fault Amber This LED is lit when the power supply is
faulty.
Note - The front and rear panel Service
Required LEDs are also lit if the system
detects a power supply fault.
3AC
Present
~AC
*
* For DC PSUs, this symbol is either DC or a power connector.
Green This LED turns on when AC voltage is
applied to the power supply.
Note - For DC models, this is the DC input OK
LED. It turns on when the input DC power is
present.