Dell E521 Technical Overview

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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

System Board Components

floppy drive or Media Card Reader

CD or DVD drive

power supply

system board

hard drive



Contents

Main DellDimensionE521ServiceManual Notes, Notices, and Cautions About Your Computer DellDimensionE521ServiceManual Front View of the Computer Back View of the Computer Back Panel Connectors Page Advanced Troubleshooting DellDimensionE521ServiceManual Power Lights Diagnostic Lights Beep Codes System Messages Page Dell Diagnostics Starting the Dell Diagnostics Dell Diagnostics Main Menu Drivers Identifying Drivers What Is a Driver? Windows XP Reinstalling Drivers Using Windows XP Device Driver Rollback Manually Reinstalling Drivers Resolving Software and Hardware Incompatibilities Before You Begin Getting Started Recommended Tools Turning Off Your Computer Before Working Inside Your Computer Page Removing and Installing Parts Removing the Computer Cover Memory Memory Installation Guidelines Addressing Memory With 4-GB Configurations Installing Memory Removing Memory Cards PCI Cards Installing a PCI Card Page Removing a PCI Card PCI Express Cards Installing a PCI Express Card Page Removing a PCI Express Card Drive Panel Removing the Drive Panel Removing the Drive-Panel Insert Installing the Drive-Panel Insert Installing the Drive Panel Drives Connecting Drive Cables Drive Interface Connectors Connecting and Disconnecting Drive Cables Hard Drive Removing a Hard Drive Installing a Hard Drive Page Adding a Second Hard Drive Floppy 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 Replacing the Battery Power Supply Replacing the Power Supply Processor Removing the Processor Installing the Processor Page I/O Panel Removing the I/O Panel Installing the I/O Panel Processor Fan Removing the Processor Fan Installing the Processor Fan System Board Removing the System Board System Board Screws Installing the System Board Installing the Computer Cover Page Page Specifications Page Page System Setup Overview Entering System Setup System Setup Screen System Setup Options Page Boot Sequence Option Settings Changing Boot Sequence for the Current Boot Changing Boot Sequence for Future Boots Clearing Forgotten Passwords Clearing CMOS Settings Flashing the BIOS Page Technical Overview Inside View of Your Computer System Board Components Power Supply DC Connector Pin Assignments DC Power Connector P1 DC Power Connector P2 DC Power Connectors P3, P5, P8, and P9 DC Power Connector P7 DC Power Connector P10