Dell 980 service manual

Page 24

failure has occurred.

Power connector not installed properly.

Possible peripheral card or system board failure has occurred.

Apossible system board failure has occurred.

A possible coin cell battery failure has occurred.

The computer is in a normal on condition.

The diagnostic lights are not lit after the computer successfully boots to the operating system.

Apossible processor failure has occurred.

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

Apossible graphics card failure has occurred.

A possible floppy drive or hard drive failure has occurred.

A possible USB failure has occurred.

No memory modules are detected.

Memory modules are detected, but a memory

one until you find the bad one.

Reseat the 2x2 power connector from the power supply unit.

Remove all peripheral cards from the PCI and PCI-E slots and restart the computer. If the computer boots, add the peripheral cards back one by one until you find the bad one.

Disconnect all internal and external peripherals, and restart the computer. If the computer boots, add the peripheral cards back one by one until you find the bad one.

If the problem persists, the system board is probably bad.

Remove the coin cell battery for one minute, reinstall the battery, and restart.

Ensure that the display is connected and powered on.

Reseat the processor.

If two or more memory modules are installed, remove the modules (see your service manual), then reinstall one module (see your service manual and restart the computer. If the computer starts normally, continue to install additional memory modules (one at a time) until you have identified a faulty module or reinstalled all modules without error.

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

Reseat any installed graphics cards.

If available, install a working graphics card into your computer.

Reseat all power and data cables.

Reinstall all USB devices and check all cable connections.

If two or more memory modules are installed, remove the modules (see your service manual), then reinstall one module (see your service manual) and restart the computer. If the computer starts normally, continue to install additional memory modules (one at a time) until you have identified a faulty module or reinstalled all modules without error. If available, install working memory of the same type into your computer.

Ensure that no special requirements for memory module/connector placement exist.

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Contents Rev. A00 Working on Your Computer Before Working Inside Your ComputerTurning Off Your Computer After Working Inside Your ComputerWindows Windows VistaTechnical Specifications ProcessorMemory VideoAudio NetworkSystem Information Expansion BusExternal Connectors DrivesSystem Board Connectors Controls and LightsPower Physical EnvironmentalBack to Contents Removing and Replacing Parts System Board Layout Page System Setup EPP Admin Password Min Deactivate default DNS Diagnostics Dell DiagnosticsPower Button Light Codes Power LightDescription State OffOption Function Tab FunctionBeep Codes Blinking Amber Solid Amber GreenCode Cause No time tick Diagnostic Lights Light Pattern Problem DescriptionSuggested Resolution Page Back to Contents Cover Removing the CoverReplacing the Cover Cover Replacing the Cover Front Panel Removing the Front PanelReplacing the Front Panel Optical Drive Removing the Optical DrivePage Replacing the Optical Drive Hard Drive Removing the Hard DrivePage Page Page Replacing the Hard Drive Expansion Cards Removing Expansion CardsPage Replacing Expansion Cards Wireless Module Removing the Wireless ModulePage Page Page Replacing the Wireless Module Fan Removing the FanPage Replacing the Fan Heat Sink and Processor Removing the Heat Sink and ProcessorPage Page Replacing the Heat Sink and Processor Memory Removing the Memory ModulesReplacing the Memory Modules Internal Speaker Removing the Internal SpeakerReplacing the Internal Speaker Front Thermal Sensor Removing the Front Thermal SensorReplacing the Front Thermal Sensor Power Supply Removing the Power SupplyPage Page Replacing the Power Supply Panel Removing the I/O PanelReplacing the I/O Panel Control Panel Release the cable Remove the screw Remove the control panel from the chassis Replacing the Control Panel Intrusion Switch Removing the Intrusion SwitchReplacing the Intrusion Switch Coin-Cell Battery Removing the Coin-Cell BatteryReplacing the Coin-Cell Battery System Board Removing the System BoardPage Replacing the System Board
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