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22 About Your System
Power Indicator Codes
The power supplies have indicators that show 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 indicates that the power
supply is providing DC power to the system.
• Amber — Indicates a problem with the power supply.
• Alternating green and amber — When hot-adding a power supply, this
indicates that the power supply is mismatched with the other power supply.
Replace the power supply that has the flashing indicator with a power supply
that matches the capacity of the other installed power supply.
Figure 1-4. Redundant Power Supply Status Indicator
1 power supply status indicator
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book.book Page 22 Wednesday, August 19, 2009 4:40 PM