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The LEDs and LCD are controlled by a built-in environmental controller sensor on the system board that functions as the interface between them and the processor. This controller/sensor monitors environmental conditions, such as the temperature and fan status, and displays signals on the LEDs and messages on the LCD.
Should any corrective action be required, the LCD displays a message. Refer to “LCD Messages” to determine what corrective action is required for a particular message.
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Figure 3-1 shows the LEDs on the front panel.
Activity LED
Status LED
Power LED
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3-2 Dell PowerVault 720N, 740N, and 760N Installation and Troubleshooting Guide
