Power-supply LEDs
Attention: In a dc power environment, see the documentation that comes with
the dc power supply for information about the power-supply LEDs.
The following minimum configuration is required for the DC LED on the power
supply to be lit:
v Power supply
v Power backplane
v Power cord
The following minimum configuration is required for the server to start:
v One microprocessor
v Two 512 MB DIMMs on the system board
v One power supply
v Power backplane
v Power cord
The following illustration shows the locations of the power-supply LEDs.
Attention: In a dc power environment, see the documentation that comes with
the dc power supply for information about the power-supply LEDs.
1 AC power LED
2 DC power LED
The following table describes the problems that are indicated by various
combinations of the ac power-supply LEDs and the power-on LED on the operator
information panel and suggested actions to correct the detected problems.
Attention: In a dc power environment, only trained service personnel other than
Lenovo service technicians are authorized to connect or disconnect power to the dc
power supply and to install and remove the dc power supply. See the
documentation that comes with each dc power supply.
Chapter 5. Diagnostics 167
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