Table 1-2. Front-Panel Components (continued)

Item

Component

Icon

Description

 

 

 

 

2

Power-on indicator, power

 

The power-on indicator lights when the system power

 

button

 

is on.

 

 

 

The power button controls the DC power supply output

 

 

 

to the system.

 

 

 

NOTE: If you turn off the system using the power button

 

 

 

and the system is running an ACPI-compliant operating

 

 

 

system, the system performs a graceful shutdown before

 

 

 

the power is turned off. If the system is not running an

 

 

 

ACPI-compliant operating system, the power is turned off

 

 

 

immediately after the power button is pressed.

 

 

 

 

3

NMI button

 

Used to troubleshoot software and device driver errors

 

 

 

when using certain operating systems. This button can

 

 

 

be pressed using the end of a paper clip.

 

 

 

Use this button only if directed to do so by qualified

 

 

 

support personnel or by the operating system's

 

 

 

documentation.

 

 

 

 

4

System identification button

 

The identification buttons on the front and back panels

 

 

 

can be used to locate a particular system within a rack.

 

 

 

When one of these buttons is pushed, the LCD panel

 

 

 

on the front and the blue system status indicator on the

 

 

 

back blink until one of the buttons is pushed again.

 

 

 

 

5

LCD panel

 

Provides system ID, status information, and system error

 

 

 

messages.

The LCD lights blue during normal system operation. Both the system management software and the identification buttons located on the front and back of the system can cause the LCD to flash blue to identify a particular system.

The LCD lights amber when the system needs attention, and the LCD panel displays an error code followed by descriptive text.

NOTE: If the system is connected to AC power and an error has been detected, the LCD lights amber regardless of whether the system has been powered on.

12

About Your System

Page 12
Image 12
Dell 1900 Button Is on, To the system, Immediately after the power button is pressed, NMI button, Documentation, LCD panel