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22 About Your System
Power Supply Indicator Codes
A power supply has an LED indicator that shows whether power is present or
whether a power fault has occurred.
• Not lit — AC power is not connected. It also indicates that the system
is in standby mode.
• Green — When the system is on, a green light also indicates that the
power supply is providing DC power to the system.
Figure 1-4. Power Supply Status Indicator
1 power supply status indicator 2 power supply test switch
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