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3-1
Overview
There are several LEDs on the chassis control panel as well as others on the SATA
drive carriers to keep you constantly informed of the overall status of the system
as well as the activity and health of specifi c components. There are also two but-
tons on the chassis control panel. This chapter explains the meanings of all LED
indicators and the appropriate response you may need to take.
3-2
Control Panel Buttons
There are two push-button buttons located on the front of the chassis. These are
(in order from left to right) a UID button and a power on/off button.
UID: Depressing the UID (unit identifi er) button illuminates an LED on both
the front and rear of the chassis for easy system location in large stack confi gura-
tions (see page 5-21). The LED will remain on until the button is pushed a second
time. Another UID button on the rear of the chassis serves the same function.
POWER: This is the main power switch, which is used to apply or turn off
the main system power. Turning off system power with this button removes the
main power but keeps standby power supplied to the system.
Chapter 3
System Interface
3-1
Chapter 3: System Interface
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