Dell C521 System Lights, Diagnostic Lights, Power Light Problem Description Suggested Resolution

Page 49

Configuration Displays your hardware configuration for the selected device.

The Dell Diagnostics obtains configuration information for all devices from system setup, memory, and various internal tests, and it displays the information in the device list in the left pane of the screen. The device list may not display the names of all the components installed on your computer or all devices attached to your computer.

Parameters Allows you to customize the test by changing the test settings.

Close the test screen to return to the Main Menu screen. To exit the Dell Diagnostics and restart the computer, close the Main Menu screen.

System Lights

Your power button light and hard-drive activity light may indicate a computer problem.

Power Light

Problem Description

Suggested Resolution

 

 

 

Off

The computer is in a normal "off" condition or in a power-

None. Press the power button to wake the computer or to turn the

 

conserving mode.

computer on.

 

 

 

Solid green

The computer has successfully booted and is operating normally.

None.

Blinking

The computer is in a Windows standby power-saving state (S1 or

None. Move the mouse, press the spacebar, or use another device that

green

S3).

has been configured as a wake-up device to wake the computer.

 

 

 

Solid Amber

A pre-POST failure has occurred. The system has received a

See Diagnostic Lights for more information.

 

Power Good signal from the power supply.

 

 

 

If this does not resolve your problem, contact Dell. For information about

 

 

contacting Dell, see your Owner's Manual.

 

 

 

Blinking

A possible power supply failure has occurred. The system has not

Plug the computer into a working electrical outlet.

Amber

received a Power Good signal from the power supply

 

 

 

 

Hard-Drive

Problem Description

Suggested Resolution

Activity Light

 

 

 

 

 

Solid green

The hard-drive activity light is on when the computer reads data from or writes data to the hard drive. The light

No corrective action is

 

might also be on when a device such as a CD player is operating.

required.

 

 

 

 

 

 

Diagnostic Lights

CAUTION: Before you begin any of the procedures in this section, follow the safety instructions in the Product Information Guide.

To help you troubleshoot a problem, your computer has four lights labeled "1," "2," "3," and "4" on the front panel. When the computer starts normally, the lights flash. After the computer starts, all four lights display solid green. If the computer malfunctions, the color and sequence of the lights identify the problem.

Light Pattern

Problem Description

Suggested Resolution

 

 

 

 

The computer is in a normal condition or a

See System Lights.

 

possible pre-POST failure has occurred.

 

 

 

 

 

The computer is in recovery mode.

None.

 

 

 

 

A possible processor failure was detected.

Contact Dell. For information about contacting Dell, see your Owner's Manual.

 

 

 

 

Memory modules are detected, but a memory

If you have two or more memory modules installed, remove the modules, reinstall

 

failure has occurred.

one module (see Memory), and then restart the computer. If the computer starts

 

 

normally, reinstall an additional module. Continue until you have identified a faulty

 

 

module or reinstalled all modules without error.

 

 

If available, install properly working memory of the same type into your computer

 

 

(see Memory).

 

 

If the problem persists, contact Dell. For information about contacting Dell, see your

 

 

Owner's Manual.

 

 

 

 

A possible graphics failure has occurred.

If the problem persists, contact Dell. For information about contacting Dell, see your

 

 

Owner's Manual.

 

 

 

 

A possible floppy drive or hard drive failure

Reseat all power and data cables and restart the computer.

 

has occurred.

 

 

 

 

 

 

 

Image 49
Contents September 2006 Rev. A00 Front View About Your ComputerBack View of the Computer Back Panel I/O ConnectorsBack to Contents Getting Started Before You BeginRecommended Tools Turning Off Your ComputerPage Replacing the Computer Cover Removing the Computer Cover Memory Removing and Installing PartsDDR2 Memory Overview Installing Memory Removing Memory CardsInstalling an Expansion Card Removing an Expansion Card Drives Drive Interface Connectors General Installation GuidelinesPower Cable Connector Connecting and Disconnecting Drive CablesCD/DVD Drive Installing a CD/DVD DriveRemoving a CD/DVD Drive Removing a Floppy Drive Floppy DriveInstalling a Floppy Drive Removing a Media Card Reader Media Card ReaderInstalling a Media Card Reader Removing a Hard Drive Hard DriveInstalling a Hard Drive Replacing the Battery BatteryRemoving the Processor ProcessorInstalling the Processor Page Replacing the Power Supply Power SupplyRemoving the Front I/O Panel Front I/O PanelInstalling the Front I/O Panel Fan AssemblyRemoving the Fan Assembly System Board Installing the Fan AssemblyRemoving the System Board Replacing the System Board Page Specifications Drives ConnectorsControls and Lights Physical PowerEnvironmental Entering System Setup System SetupOverview OverviewSystem System Setup Options64MB Post Behavior Boot MenuJumper Locations Clearing Password Settings Clearing Forgotten Passwords and Cmos SettingsClearing Cmos Settings Flashing the BiosInside View of Your Computer Technical OverviewSystem Board Components Jumper Setting Description Jumper SettingsDC Power Connector P1 Power Supply DC Connector Pin AssignmentsPin Number Signal name AWG Wire DC Power Connector P3 DC Power Connector P2DC Power Connector P4 DC Power Connector P5 and P6Black +12 VDC Yellow September 2006 Rev. A00 Dell Diagnostics TroubleshootingWhen to Use the Dell Diagnostics Dell Diagnostics Main MenuPower Light Problem Description Suggested Resolution Diagnostic LightsProblem Description Suggested Resolution System LightsCode Cause Beep Codes