Technical Overview, Inside View of Your Computer | Dell E521

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Technical Overview

Dell™ Dimension™ E521 Service Manual

Inside View of Your Computer

System Board Components

Power Supply DC Connector Pin Assignments

Inside View of Your Computer

1	floppy drive or Media Card Reader	2	CD or DVD drive	3	power supply

4	system board	5	hard drive

System Board Components

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Dell E521 specifications Technical Overview, Inside View of Your Computer, System Board Components

Contents

Model Dcsm About Your Computer Front View of the Computer Back Panel Connectors Back View of the Computer Back to Contents Advanced Troubleshooting Power LightsDiagnostic Lights Light Pattern Problem Description Suggested Resolution Beep Codes System MessagesCode Cause Click the Change or Remove Program icon Diskette read failure Dell Diagnostics Starting the Dell Diagnostics Dell Diagnostics Main Menu What Is a Driver?Drivers Identifying Drivers Reinstalling Drivers Using Windows XP Device Driver RollbackManually Reinstalling Drivers Windows XP Resolving Software and Hardware Incompatibilities Click Start, then click Help and Support Before You Begin Getting StartedRecommended Tools Turning Off Your Computer Back to Contents Removing and Installing Parts Removing the Computer Cover Memory Installation Guidelines Memory Addressing Memory With 4-GB Configurations Installing Memory Cards Removing Memory Installing a PCI Card PCI CardsPage Removing a PCI Card Installing a PCI Express Card PCI Express CardsPage Removing a PCI Express Card Drive Panel Removing the Drive Panel Installing the Drive-Panel Insert Installing the Drive PanelRemoving the Drive-Panel Insert Connecting Drive Cables Drives Drive Interface Connectors Connecting and Disconnecting Drive CablesHard Drive Installing a Hard Drive Removing a Hard DrivePage Floppy Drive Adding a Second Hard Drive Removing a Floppy Drive Installing a Floppy Drive Media Card Reader Removing a Media Card Reader Installing a Media Card Reader CD/DVD Drive Removing a CD/DVD Drive Installing a CD/DVD Drive Page Battery Power SupplyReplacing the Battery Replacing the Power Supply Processor Removing the Processor Installing the Processor Page Panel Removing the I/O Panel Installing the I/O Panel Processor FanRemoving the Processor Fan Installing the Processor Fan System Board Removing the System BoardSystem Board Screws Installing the Computer Cover Installing the System Board Back to Contents September 2006 Rev. A00 Specifications Connectors DrivesControls and Lights Power PhysicalEnvironmental System Setup Entering System SetupSystem Setup Screen Overview System Setup Options Onboard Devices Bypass is Not SetUnlocked Boot Sequence Option SettingsChanging Boot Sequence for the Current Boot Setup & Boot Menu Clearing Forgotten Passwords Changing Boot Sequence for Future Boots Clearing Cmos Settings Flashing the Bios Click Save this program to disk, and then click OK Technical Overview Inside View of Your ComputerSystem Board Components Power Supply DC Connector Pin Assignments Pin Number Signal name AWG Wire DC Power Connector P2 DC Power Connector P10