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Two to three power supplies provide power to components in the system box.
The system supports redundant power configurations to ensure continued
system operation if a power supply fails. See Chapter 6 for power supply
configurations.
The power supplies select line voltage automatically (100V to 240V and 50 Hz or
60 Hz).
Power Supply LEDs
Each power supply has two green LEDs that indicate the state of power to the
system.
POK (Power OK)
+5 V Auxiliary
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ES45 Service Guide
Indicates that the power supply is providing power.
The POK LED is on when the system is running.
When the system power is on and a POK LED is off,
that supply is not contributing to powering the
system.
Indicates that AC power is flowing from the wall
outlet. As long as the power supply cord is plugged
into the wall outlet, the +5V Aux LED is always on,
even when the system power is off.
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Troubleshooting
