Dell B110 Diagnostic Lights, Yellow LED, Green LEG, Light Pattern Problem Description

Page 16

Yellow LED

 

 

 

 

 

 

 

on

on

off

off

off

Green LEG

 

 

 

 

 

 

 

 

 

 

 

 

Diagnostic Lights

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

To help you troubleshoot a problem, your computer has four lights labeled "A," "B," "C," and "D" on the back panel. The lights can be yellow or green. 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

The computer is in a normal off condition or

apossible pre-BIOS failure has occurred.

Memory modules are detected, but a memory failure has occurred.

Suggested Resolution

Plug the computer into a working electrical outlet and press the power button.

If you have one memory module installed, reinstall the memory module and restart the computer.

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

If the problem persists, see "Contacting Dell" in your Owner's Manual for instructions on obtaining technical assistance.

A possible graphics

If the computer has a graphics card, remove the card, reinstall it, and

card failure has

then restart the computer.

occurred.

If the problem still exists, install a graphics card that you know works

 

and restart the computer.

 

If the problem persists or the computer has integrated graphics, see

 

"Contacting Dell" in your Owner's Manual for instructions on obtaining

 

technical assistance.

A possible floppy or

Reseat all power and data cables and restart the computer.

hard drive failure has

 

occurred.

 

A possible USB failure

Reinstall all USB devices, check cable connections, and then restart the

has occurred.

computer.

Memory modules are

Ensure that no special memory module/memory connector placement

detected, but a

requirements exist (see Specifications).

memory configuration

Verify that the memory modules that you are installing are compatible

or compatibility error

with your computer (see Specifications).

exists.

If the problem persists, see "Contacting Dell" in your Owner's Manual for

 

instructions on obtaining technical assistance.

A possible expansion

1. Determine if a conflict exists by removing a card (not a graphics card)

card failure has

and restarting the computer.

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Contents Abbreviations and Acronyms Before You Begin Getting StartedRecommended Tools Turning Off Your ComputerOpen the computer cover Back to Contents Turn off your computerRemoving the Computer Cover Technical Overview Inside View of Your Computer System Board ComponentsPower Supply DC Connector Pin Assignments Minimum Current a Maximum Current a DC Power Connector P2 DC Power Connector P1Pin Number Signal name Wire Color DC Power Connectors P8 and P9 DC Power Connector P4DC Power Connector P6 Pin Number Signal Name 18-AWG Wire ColorDC Power Connector P7 Pin Number Signal Name 22-AWG Wire ColorMemory Technical SpecificationsComputer Information Connectors VideoAudio Expansion BusPower Controls and LightsPhysical EnvironmentalBack to Contents Advanced Troubleshooting Power LightsRemove and then reinstall the memory modules Network LightsDiagnostic Lights Light Pattern Problem DescriptionSuggested Resolution Yellow LEDBeep Codes Code CauseSystem setup program Enter the system setup program, verifySystem Messages Message Possible Cause Corrective ActionFDD System Setup Entering System SetupSystem Setup Screens OverviewSystem Setup Options Drive ConfigurationSystem Hard-Disk Drive SequenceBoot Sequence Memory InformationCPU Information Integrated DevicesBoot Sequence Option SettingsChanging Boot Sequence for the Current Boot Power ManagementChanging Boot Sequence for Future Boots Clearing Forgotten PasswordsEnter system setup Replace the computer cover Removing and Installing Parts Memory Installation GuidelinesHard Drive Power Supply Floppy Drive Battery MemoryInstalling Memory Shut down the computer through the Start menuReplace the computer cover Cards PCI CardsBefore installing any cards Front Panel Removing the Front PanelRemoving the Front-Panel Insert Remove the computer coverReattaching the Front Panel General Installation Guidelines Connecting Drive CablesDrives Hard DriveRemoving a Hard Drive Installing a Hard Drive Page Floppy Drive Removing a Floppy DriveInstalling a Floppy Drive CD/DVD Drive Removing a CD/DVD DriveInstalling a CD/DVD Drive Adding a Second CD or DVD Drive Page Processor Removing the ProcessorInstalling the Processor Page Fan Assembly Removing the Fan AssemblyReplacing the Fan Assembly System Board Remove the microprocessor heat sink Remove the fan assemblyRemoving the System Board Installing the System Board Reinstall the fan assemblyRemoving the Power Supply Power SupplyReplacing the Power Supply Battery Replace the computer cover Replacing the Computer Cover
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