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

Item

Component

Icon

 

 

 

Description

 

 

 

 

 

 

 

 

 

 

 

 

 

 

5

USB connectors (2)

 

 

 

 

 

 

 

 

 

 

 

Connects USB 2.0-compliant devices to the system.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

6

power button

 

 

 

 

 

 

 

 

 

 

 

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.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

7

power light

 

 

 

 

 

 

 

 

 

 

 

No light — The system is off.

 

 

 

 

 

 

 

 

 

 

 

 

 

Steady green — The system is powered on.

 

 

 

 

 

 

 

 

 

 

 

 

 

Blinking green — The system is in a low power state.

 

 

 

 

 

 

 

 

 

 

 

 

 

Steady amber — The power supply is probably good.

 

 

 

 

 

 

 

 

 

 

 

 

 

Blinking amber — The system is powering up.

 

 

 

 

 

 

 

 

 

 

 

 

 

• If the hard drive indicator is off, the power supply may need to be

 

 

 

 

 

 

 

 

 

 

 

 

 

replaced.

 

 

 

 

 

 

 

 

 

 

 

 

 

• If the hard drive indicator is on, the system board is faulty. Check the

 

 

 

 

 

 

 

 

 

 

 

 

 

diagnostic indicators to see if the specific problem is identified. See

 

 

 

 

 

 

 

 

 

 

 

 

 

"Diagnostic Lights" on page 15.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

8

network link light

 

 

 

 

 

 

 

 

 

 

 

Lights when the system is linked to a network.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

9

diagnostic lights (4)

 

 

 

 

 

 

 

 

 

 

 

Display light-pattern codes to assist in troubleshooting system

 

 

 

 

 

 

 

 

 

 

 

 

 

problems. See "Diagnostic Lights" on page 15.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

12

About Your System

Page 12
Image 12
Dell SC440 owner manual Immediately after the power button is pressed, Replaced, Diagnostic Lights on