Dell Dimension XPS T User Manual

Dell™Dimension™XPST

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and T

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Preface Technical Overview Controls and Indicators Drivers System Codes and Messages System Setup Program Specifications Removing and Replacing Parts Documentation

Reproduction in any manner whatsoever without the written permission of Dell Computer Corporation is strictly forbidden.

Trademarks used in this text: Dell, Dimension, and the DELL logo are trademarks of Dell Computer Corporation; Microsoft, Windows, and WindowsNT are registered trademarks of Microsoft Corporation; Intel and Pentium are registered trademarks of Intel Corporation; VESA is a registered trademark of Video Electronics Standards Association; Adobe is a trademark of Adobe Systems Incorporated, which may be registered in certain jurisdictions.

Other trademarks and trade names may be used in this document to refer to either the entities claiming the marks and names or their products. Dell Computer Corporation disclaims any proprietary interest in trademarks and trade names other than its own.

Model MMS

Initial release: 26 Feb 1999 Last revised: 18 May 2000

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System Codes and Messages: Dell™Dimension™XPST

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Reference

Diagnostic Codes •POST Beep Codes •System Messages

Diagnostic Codes

Your system is equipped with four diagnostic code indicators, which are labeled "A," "B," "C," and "D" on the back of the computer. Each of the four indicators can be yellow, green, or off as shown in Table 1. When the computer is turned on or restarted and the system is functioning normally, the indicators flash during power-on self-test (POST). After the system starts, the indicators remain green to signify normal system operation.

If a malfunction is detected and the computer fails to start, the indicators display a code that identifies the problem. Write down the diagnostic code displayed, and look it up in Table 1.

Table 1. Diagnostic Codes

Diagnostic Code

Definition

Corrective Action

Power up default.

Make sure that the system is connected to an electrical outlet, and then check whether the front-panel power indicator (see Controls and

Indicators) is on or off. If the power

indicator is off, check the power

supply. If the problem persists, refer

to Chapter 7, "Getting Help," of the

Dell Dimension XPS Txxx and Txxxr Systems Reference and Troubleshooting Guide for

instructions on obtaining technical assistance.

If the power indicator is on, reseat the

microprocessor. Remove all expansion cards.Ifthesystemstill

does not start, refer to Chapter 7, "Getting Help," of the Reference and Troubleshooting Guide for instructions on obtaining technical assistance.

System board is receiving power, but the BIOS is not executing.

Set the configuration jumper to Maintenance mode and restart the system. Enter the system setup

program and ensure that the

microprocessor speed is set correctly. Exit and save the setting. Turn off the computer and reset the configuration jumper to Normal mode, and then restart the system. Reseat

the microprocessor. Remove all expansion cards and restart the

system to determine if a resource conflict exists. If a conflict exists, resolve the conflict as described in "Resolving Software and Hardware Incompatibilities" in Chapter 5 of the

Reference and Troubleshooting Guide. If the problem persists, refer

to Chapter 7, "Getting Help," of the

Reference and Troubleshooting Guide for instructions on obtaining

technical assistance.

Recovery mode from BIOS failure.

Set the configuration jumper to Maintenance mode and restart the system. Enter the system setup

program and ensure that the

microprocessor speed is set correctly. Exit and save the setting. Turn off the computer and reset the configuration jumper to Normal mode,

POST Beep Codes

If the monitor cannot display errors or problems, during POST the computer may emit a series of beeps, or beep code, that identifies the problem. For example, one beep, a burst of three short beeps, and two more single beeps (beep code 1-3-1-1) means that the system has encountered a dynamic random-access memory (DRAM) refresh error condition.

If the system emits a beep code and then fails to start, write down the beep code and look it up in Table 2.

and then restart the system. If the problem persists, refer to Chapter 7, "Getting Help," of the Reference and Troubleshooting Guide for instructions on obtaining technical assistance.

Microprocessor has failed a BIOS test.

Reseat the microprocessor.Ifthe

problem persists, refer to Chapter 7, "Getting Help," of the Reference and Troubleshooting Guide for instructions on obtaining technical assistance.

Memory failed to be sized or enabled.

Reseat the DIMMs. If the problem

persists, remove all but one DIMM and then restart the system. Repeat this step until the malfunctioning DIMM is identified.

PCI bus failure has occurred.

Remove all expansion cards and

restart the system to determine if a resource conflict exists. If a conflict exists, resolve the conflict as described in "Resolving Software and Hardware Incompatibilities" in Chapter 5 of the Reference and Troubleshooting Guide. If the problem persists, refer to Chapter 7, "Getting Help," of the Reference and Troubleshooting Guide for instructions on obtaining technical assistance.

Video controller failed to initialize or respond.

Reseat the video card.If the problem

persists, refer to Chapter 7, "Getting Help," of the Reference and Troubleshooting Guide for instructions on obtaining technical assistance.

IDE bus failure has occurred.

Reseat the IDE cables. If the problem persists, refer to Chapter 7, "Getting Help," of the Reference and Troubleshooting Guide for instructions on obtaining technical assistance.

USB port or a device connected to it has failed initialization.

Disconnect the device from the USB

port. If the problem persists, refer to

Chapter 7, "Getting Help," of the

Reference and Troubleshooting Guide for instructions on obtaining

technical assistance.

Other failure.

Refer to Chapter 7, "Getting Help," of the Reference and Troubleshooting Guide for instructions on obtaining technical assistance.

System has started and turned over control to the operating system.

No action is necessary.

Table 2. System Beep Codes

System Messages

The first column in Table 3 lists (in alphabetical order) system messages that may appear on the screen during the boot routine or during normal system operation. The second column in the table lists probable causes of the messages, and the third column either provides a corrective action or refers you to a source for resolving the problem.

Table 3. System Messages

Beep Codes

Possible Cause

Corrective Action

1-2

No video card detected

Reseat the video card.

1-2-2-3

BIOS ROM checksum error

Refer to Chapter 7, "Getting Help," of the Reference and Troubleshooting Guide for instructions on obtaining technical assistance.

1-3-1-1

DRAM refresh error

Reseat the DIMMs.

1-3-1-3

8742 keyboard controller error

Reseat the keyboard connector.

1-3-3-1

Memory defective or not present

Reseat the DIMMs.

1-3-4-1

RAM failure on line xxx

Reseat the DIMMs.

1-3-4-3

RAM failure on data bits xxx of low byte on memory bus

Reseat the DIMMs.

1-4-1-1

RAM failure on data bits xxx of high byte on memory bus

Reseat the DIMMs.

Message

Possible Cause

Corrective Action

nnnn Cache RAM Passed

nnnn KB of system cache RAM has been successfully tested.

No action is necessary.

nnnn Extended RAM Passed

nnnn KB of extended RAM has been successfully tested.

No action is necessary.

nnnn Shadow RAM Passed

nnnn KB of shadow RAM has been successfully tested.

No action is necessary.

nnnn System RAM Passed

nnnn KB of system RAM has been successfully tested.

No action is necessary.

CD ROM drive Identified

The system's automatic drive-type detection feature has identified the CD-ROM drive.

No action is necessary.

Diskette drive A error Diskette drive B error

Drive A or B is present but has failed the BIOS POST.

Ensure that the drive is installed correctly in the chassis and defined correctly in the system

setup program.

Entering Setup

The system is starting the system setup program.

No action is necessary.

Extended RAM Failed at offset:

nnnn

Extended memory is not working correctly or is not configured correctly at offset nnnn.

If you receive this message after making changes in the system setup program, enter the program and restore the original value(s).

Failing bits: nnnn

nnnn is a map of the bits at the RAM address (in system, extended, or shadow memory) that failed the memory test. Each "1" in the map indicates a failed bit.

If you receive this message after making changes in the system setup program, enter the program and restore the original value(s).

Fixed Disk n Failure Fixed Disk Controller Failure

The hard-disk drive specified by n is not working or not configured correctly.

Ensure that the drive is installed correctly in the chassis and defined correctly in the system

setup program.

Fixed Disk n Identified

The system's automatic drive-type detection feature has identified the hard-disk drive(s).

No action is necessary.

Incorrect Drive x type - Run SETUP

Diskette drive x is not correctly identified in the system setup program.

Ensure that the drive is defined correctly in the

system setup program.

Invalid NVRAM media type

The system is having a problem accessing NVRAM (CMOS).

Set the configuration jumper to Maintenance mode and restart the system to return all settings to their defaults.

Invalid system configuration data

The system configuration information in the system setup program is incorrect, or the battery charge may be low.

Enter the system setup program and verify the system configuration; then restart the system.

Keyboard controller error

The keyboard controller failed its test.

If you receive this message after making changes in the system setup program, enter the program and restore the original value(s).

Keyboard error

The keyboard is not working correctly.

The keyboard or system board may need to be replaced.

Keyboard error nn

The BIOS has detected a stuck key represented by scan code nn.

Make sure nothing is resting on the keyboard; if a key appears to be stuck, carefully pry it up. If the problem persists, you may need to replace the keyboard.

Mouse initialized

The system's mouse has been found and initialized.

No action is necessary.

Operating system not found

The operating system cannot be located on drive A or drive C.

Enter the system setup program and confirm that drive A or drive C is properly identified.

Parity check 1 nnnn

A parity error has been detected on the system bus. The BIOS attempts to locate the address and display it (nnnn); if it cannot locate the address, it displays ???? instead.

If you receive this message after making changes in the system setup program, enter the program and restore the original value(s).

Parity check 2 nnnn

A parity error has been detected on the I/O bus. The BIOS attempts to locate the address and display it (nnnn); if it cannot locate the address, it displays ???? instead.

If you receive this message after making changes in the system setup program, enter the program and restore the original value(s).

Press <F1> to resume, <F2> to Setup

This message is displayed after any recoverable error message.

Press <F1> to start the boot routine or <F2> to enter the system setup program and change any settings.

Press <Del> to enter SETUP

Optional message displayed during POST.

If desired, press <Del> to enter the system

setup program.

Previous boot incomplete - Default configuration used

After an unsuccessful boot, POST loads default values and offers to run the system setup program. (POST does not input these default values to the system setup program.)

There may be incorrect values or incorrect settings in the system setup program. Run the system setup program and attempt to restore the incorrect setting(s). If the message reappears, set the configuration jumper to Maintenance mode and restart the system to return all settings to their defaults.

Real time clock error

The RTC has failed the BIOS test.

If you receive this message after making changes in the system setup program, enter the program and restore the original value(s).

Resource allocation conflict on motherboard

The system cannot configure all system board devices without a resource conflict.

Run the system setup program and try to resolve any obvious resource conflicts. If the message reappears, set the configuration

jumper to Maintenance mode and restart the

system to return all settings to their defaults.

Shadow RAM failed at offset: nnnn

Shadow RAM has failed at offset nnnn in the 64-KB block in which the error was detected.

If you receive this message after making changes in the system setup program, enter the program and restore the original value(s).

System battery is dead - Replace and run SETUP

The CMOS clock battery indicator shows the battery is dead.

Replace the battery and run the system setup

program to reconfigure the system.

System BIOS shadowed

The system BIOS has been copied to shadow RAM.

No action is necessary.

System cache error - cache disabled

RAM cache failed the BIOS test; the BIOS has disabled the cache.

If you receive this message after making changes in the system setup program, enter the program and restore the original value(s).

System CMOS checksum bad - run SETUP

System CMOS has been corrupted or modified incorrectly, perhaps by an application program that changes data stored in CMOS.

Run the system setup program and reconfigure the system by either reverting to the default values or by making your own selections.

System RAM failed at offset: nnnn

System RAM failed at offset nnnn in the 64-KB block in which the error was detected.

If you receive this message after making changes in the system setup program, enter the program and restore the original value(s).

System timer error

The timer test failed.

If you receive this message after making changes in the system setup program, enter the program and restore the original value(s).

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UMB Upper limit segment address:

nnnn

Displays the address nnnn of the upper limit of the UMB, indicating released segments of the BIOS which may be reclaimed by a virtual memory manager.

No action is necessary.

Video BIOS shadowed

The video BIOS has been successfully copied to shadow RAM.

No action is necessary.

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Controls and Indicators: Dell™Dimension™XPST

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Front Panel •Back Panel

Front Panel



Back Panel

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Power button — Turns computer on and off.

Power indicator — Lights up when the computer is on.

Diskette-drive access indicator — Lights up when a diskette drive is being accessed.

Reset button — Press this button for 1 to 4 seconds to initiate a hardware reset. To avoid possible data or file structure corruption, close as many open application programs and files as possible before pressing the reset button.

Hard-disk drive access indicator — Lights up when a hard-disk drive is being accessed.

Voltage selection switch — Selects the operating voltage for the system.

Diagnostic code indicators (4) — If a malfunction is detected and the computer fails to start, the indicators display a code that identifies the problem.

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Documentation: Dell™Dimension™XPST

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Printed Documentation •Online Documentation

Printed Documentation

To save PDF files (files with an extension of .pdf) to your hard-disk drive, right-click the document title, click Save Target As in Microsoft®Internet Explorer or Save Link As in Netscape Navigator, and specify a location on your hard-disk drive.

Right-click only the following links:

Getting Started Sheet (.pdf) (5070 KB) Dell Dimension Systems Setup Guide (.pdf) (418 KB) Dell Dimension XPS Txxx and Txxxr Systems Reference and Troubleshooting Guide (.pdf) (3185 KB)

Online Documentation

Downloading the Help and Associated Files

1. Right-click the following link to the popup.ocx file:

popup.ocx

2. Click Save Target As in Microsoft Internet Explorer or Save Link As in Netscape Navigator, and specify c:\windows\system on your hard-disk drive.

3. Click the Start button on the Microsoft Windows®desktop, and then click Run.

4. Type regsvr32 popup.ocx and then press <Enter>.

5. Click OK when the installation is complete.

6. Right-click the following link to the Help file:

Dell Dimension XPS Txxx and Txxxr Systems Help (.chm) (949 KB)

7. Click Save Target As in Microsoft Internet Explorer or Save Link As in Netscape Navigator, and specify a location on your hard-disk drive.

Viewing the Help File

To view the Help file, perform the following steps:

1. Click the Start button on the Windows desktop, point to Programs, and then click Windows Explorer.

2. Navigate to the directory in which you saved the Help file.

3. Double-click the file (XPSTrHlp.chm).

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You must right-click the link for a portable document format (PDF) file and save the file to your hard-disk drive. Attempting to open large PDF files through your browser causes your system to freeze.

NOTES:PDFfilesrequireAdobe™AcrobatReader,whichcanbedownloadedfromtheAdobeWorldWideWebsiteat

http://www.adobe.com/acrobat/

To view a PDF file, launch Acrobat Reader. Click File–> Open and select the PDF file.

Compiled HTML Help files (files with an extension of .chm) require Microsoft Internet Explorer 4.0 or later.

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Drivers:Dell™Dimension™XPST

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Drivers For Systems Purchased After May 19, 2000 •Drivers For Systems Purchased Before May 19, 2000

Drivers For Systems Purchased After May 19, 2000

All of your system’s drivers for Dell-installed devices are operative when you receive the system—no further installation or configuration is needed. However, if you ever need to reinstall any of these drivers, the driver files are provided on the Dell Dimension ResourceCD.

Device problems can often be corrected by reinstalling the appropriate drivers. Also, hardware manufacturers frequently provide updated drivers that support feature enhancements or that correct problems. Obtain updated drivers for products purchased from Dell at the support section of the Dell World Wide Web site (http://support.dell.com).

NOTICE: Drivers available on the Dell Web site have been validated for correct operation on Dell systems. Installing drivers obtained from other sources may cause errors or performance degradation.

Your System’s Drivers

The device drivers that can be reinstalled on your system are listed below:

Yamaha Audio Driver — Enables the system’s audio controller to produce sound. Other Drivers — Control the devices, such as modem cards or network interface controller (NIC) cards, that may be installed on your system. For

instructions on how to reinstall these drivers, see the device’s documentation by double-clicking the Dell Documents icon on the Windows desktop, clicking System Information, and then clicking System Documentation.

Using the Dell Dimension ResourceCD to Reinstall Drivers

NOTICE: The Dell Dimension ResourceCD contains drivers for devices that might not be installed in your computer. Do not install device drivers unless you first identify the specific driver intended for the hardware installed in your computer (see "Your System’s

Drivers"). Installing incorrect drivers might make your computer inoperable.

1. Start the computer’s operating system.

2. If you have not initially installed the Dell Dimension ResourceCD application program, proceed to the next step. If you have previously installed the application program, proceed to step 6.

3. Insert the Dell Dimension ResourceCD into the optical drive. The ResourceCD Installation application program automatically starts.

4. Follow the instructions on your screen.

5. When the InstallShield Wizard Complete window appears, remove the Dell Dimension ResourceCD from the optical drive, and then click Finish to restart the computer.

6. After the operating system starts, insert the Dell Dimension ResourceCD into the optical drive. The Welcome Dell System Owner screen appears.

7. Click Next.

8. Change the language in the Language list located in the upper-right corner of the window, if needed.

9. Select the model of your computer in the System Model list.

10. Select your computer’s operating system in the Operating System list.

11. Select the type of device in the Device Type list.

12. Select Drivers in the Topic list.

13. Click the name of the driver that you want to reinstall. See "Your System’s Drivers" for a list of drivers that you can reinstall on your computer.

14. Follow the instructions on the screen.

Drivers For Systems Purchased Before May 19, 2000

The device drivers that can be reinstalled on your system are listed below:

Yamaha Audio Driver — Enables the system’s audio controller to produce sound.

Other Drivers — Control the devices, such as video, modem, or network interface controller (NIC) cards, that may be installed on your system. For

NOTE: If a driver does not appear under a selected operating system on the Dell Dimension ResourceCD, then the driver is not required by that operating system.

Yamaha Audio Driver

Dell installed and configured your system's video driver on your hard-diskdrive.Nofurtherinstallationorconfigurationisneeded.Ifyoueverneed to reinstall this driver, see the appropriate procedure for the Microsoft®Windows®98, Windows NT®4.0, or Windows 2000 operating systems.

Audio Drivers for Microsoft Windows 98

To reinstall the audio drivers for the Microsoft Windows 98 operating system, perform the following steps:

1. Start the Windows 98 operating system.

2. Insert the Dell Dimension ResourceCD into the CD-ROM drive. When the Dell Dimension ResourceCD screen appears, click the right-arrow button.

3. The first time that you use the Dell Dimension ResourceCD, you are prompted to select a language. Select the language of your choice, and click OK.

4. In the All Folders list, click the drivers folder. When an alert message appears, informing you that only knowledgeable users should install drivers, click OK to continue.

5. In the All Folders list, click the win98 folder.

6. In the Description list, click Dimension XPS-Txxx Yamaha Audio Driver.

7. In the All Folders list, click disk1.

8. Double-click the only file that appears in the All Files list. The file is named nnnnnnnn.exe, where nnnnnnnn is an eight-digit part number.

9. Follow the prompts on the screen, and accept all defaults.

10. When prompted to restart your system to complete the installation, remove the Dell Dimension ResourceCD from the CD-ROM drive, and then click Finish.

Audio Drivers for Microsoft Windows NT 4.0

To reinstall the audio drivers for Windows NT 4.0, perform the following steps:

1. Start the Windows NT 4.0 operating system.

2. Insert the Dell Dimension ResourceCD into the CD-ROM drive. When the Dell Dimension ResourceCD screen appears, click the right-arrow button.

3. The first time that you use the Dell Dimension ResourceCD, you are prompted to select a language. Select the language of your choice and click OK.

4. In the All Folders list, double-click the drivers folder. When an alert message appears, informing you that only knowledgeable users should install drivers, click OK to continue.

5. In the All Folders list, click the winnt folder.

6. In the Description list, click Dimension XPS-Txxx Yamaha Audio Driver.

7. In the All Folders list, click disk1.

8. Double-click the only file that appears in the All Files list. The file is named nnnnnnnn.exe, where nnnnnnnn is an eight-digit part number.

9. When the Welcome window appears, click Next and follow any installation prompts.

10. When prompted to restart your system to complete the installation, remove the Dell Dimension ResourceCD from the CD-ROM drive, and then click Finish.

11. Click the Start button, point to Settings, and click Control Panel.

12. Double-click the Multimedia icon.

13. In the Multimedia Properties window, click the Devices tab. Then click Add.

14. In the Add dialog box, select Unlisted or Updated Driver and click OK.

15. In the Add Unlisted or Updated Driver dialog box, use Browse to select the c:\yamaha\ds-xg\ directory and click OK three times to restart the system.

Audio Drivers for Microsoft Windows 2000

If you need to reinstall the audio drivers, you must reinstall Windows 2000. When you install the Windows 2000 operating system on your computer, the audio drivers are automatically installed.

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EIDESubsystem:Dell™Dimension™XPST

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The enhanced integrated drive electronics (EIDE) subsystem includes 2 EIDE interfaces (primary and secondary), each of which can support up to 2 EIDE devices such as high-capacity EIDE hard-disk drives, CD-ROM drives, and tape drives.

Configure all EIDE devices for the Cable Select jumper position, which assigns master and slave status to devices by their position on the interface cable. In this configuration, the drive attached to the last connector on the interface cable is the master or boot drive (drive 0) and the drive attached to the middle connector on the interface cable is the slave drive (drive 1). Refer to the drive’s documentation for instructions on setting the Cable Select jumper position.

When you replace a drive, refer to the jumpers on the original drive to set the jumpers on the replacement drive.

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NOTE: The externally accessible drive bays at the front of the system are normally used for diskette drives, CD-ROM drives, or tape drives.

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Preface:Dell™Dimension™XPST

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Notes, Notices, and Cautions •Typographical Conventions

Notes, Notices, and Cautions

Throughout this guide, blocks of text may be accompanied by an icon and printed in bold type or in italic type. These blocks are notes, notices, and cautions, and they are used as follows:

NOTICE: A NOTICE indicates either potential damage to hardware or loss of data and tells you how to avoid the problem.

Typographical Conventions

The following list defines (where appropriate) and illustrates typographical conventions used as visual cues for specific elements of text throughout this document:

l Interface components are window titles, button and icon names, menu names and selections, and other options that appear on the monitor

screen or display. They are presented in bold. Example: Click OK.

l Keycaps are labels that appear on the keys on a keyboard. They are enclosed in angle brackets.

Example: <Enter>

l Key combinations are series of keys to be pressed simultaneously (unless otherwise indicated) to perform a single function.

Example: <Ctrl><Alt><Enter>

l Commands presented in lowercase bold are for reference purposes only and are not intended to be typed when referenced.

Example: “Use the format command to . . . .”

In contrast, commands presented in the Courier New font are part of an instruction and intended to be typed. Example: “Type format a: to format the diskette in drive A.”

l Filenames and directory names are presented in lowercase bold.

Examples: autoexec.bat and c:\windows

l Screen text is a message or text that you are instructed to type as part of a command (referred to as a command line). Screen text is

presented in the Courier New font. Example: The following message appears on your screen: No boot device available Example: “Type md c:\programs and press <Enter>.”

l Variables are placeholders for which you substitute a value. They are presented in italics.

Example: DIMM_x (where x represents the DIMM socket designation)

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NOTE: A NOTE indicates important information that helps you make better use of your computer system.

CAUTION: A CAUTION indicates a potentially hazardous situation which, if not avoided, may result in minor or moderate injury.

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RemovingandReplacingParts:Dell™Dimension™XPST

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Reference

Overview •Precautionary Measures •Recommended Tools •Cover and Support Beam •Bezel •Drive Cage •3.5-Inch Front-Panel Insert •5.25Inch Front-Panel Insert •Upper 3.5-Inch Drive •Lower 3.5-Inch Drive •3.5-Inch Diskette Drive •5.25-Inch Drive •Primary Hard-Disk Drive • Secondary Hard-Disk Drive •Power Supply •Chassis Cooling-Fan Assembly •Card Guide Assembly •Control Panel Board •Expansion Cards • DIMMs •SECC2 Package and Heat Sink Assembly •Battery •System Board

Overview

Unless otherwise noted, each of the following procedures assumes:

l You have the recommended tools. l You have performed the steps listed in the Caution in Precautionary Measures. l You have removed the computer cover. l You can replace or reinstall a part by performing the removal procedure in reverse order.

Precautionary Measures

Before you remove or replace parts in the system, read the following caution for your personal safety and to prevent damage to the system from ESD.

After you remove or replace parts in the system, observe the following notice to prevent damage to the system.

NOTICE: Make sure all other system cables are connected before connecting the computer to its electrical outlet.

Recommended Tools

l Small flat-blade screwdriver l Wide flat-blade screwdriver l #1 and #2 Phillips-head screwdrivers l 1/4-inch nut driver l Tweezers or long-nose pliers l Wrist grounding strap

Cover and Support Beam

CAUTION FOR YOUR PERSONAL SAFETY AND PROTECTION OF THE EQUIPMENT:

Before you start to work on the system, perform the following steps in the sequence listed:

1. Turn off your computer and all devices.

2. Ground yourself by touching an unpainted metal surface at the back of the computer before touching anythinginsideyourcomputer.

While you work, periodically touch an unpainted metal surface on the computer to dissipate any static electricity that might harm internal components.

3. Disconnect any devices connected to the computer, including the monitor, from their electrical outlets to reduce the potential for personal injury or shock. Also, disconnect any telephone or telecommunication lines from the computer.

4. Disconnect the power cable to your computer, and then press the power button to ground the system board.

To remove the computer cover and support beam from a desktop or mini tower system, perform the following steps:

1. If you are working on a mini tower system, lay the computer on its right side with the chassis foot off the edge of the work surface to allow the computer to lay flat as shown in the illustration above.

2. Loosen the cover-mounting thumbscrew that secures the cover to the back of the computer.

3. Face the front of the chassis. Use your thumbs to press in both cover release latches while pushing the cover backward. Move the cover back about an inch, and then lift it straight up off the chassis. If necessary, use both hands and work one side at a time.

4. Pull up the front end of the support beam until the front end snaps free from its fastener. Lift the front of the beam until the hinged tabs on the back end of the beam clear their slots as shown below.

Cover-mounting thumbscrew

Chassis foot

Cover release latches (2)

NOTE: The thumbscrew is captive and stays in the cover when loosened.

CAUTION: To prevent cuts, keep your hands clear of the metal edges on the chassis and fan guard as you slide the cover back.1Lock tab

Fastener

Support beam

Slots (2)

To replace the computer cover and support beam on a desktop or mini tower chassis, perform the following steps:

1. Slip the beam’s hinged tabs into their slots and lower the beam. Then place the lock tab into its fastener, and press down on the front end of the beam until it snaps into position.

2. Position the cover on the chassis approximately one inch back. Slide the cover forward until it locks into place.

3. Tighten the cover-mounting thumbscrew on the back of the chassis.

Bezel

To remove the bezel, perform the following steps:

1. With the cover removed, press in the tabs along the top and side of the bezel.

2. Swing the bezel away from the chassis, disengage the hooks, and carefully pull the bezel away from the chassis.

Drive Cage

Hinged tabs (2)

Bezel2Tabs (3)

Drive cage

Screw

Drive-cage slots (6)

To remove the drive cage, perform the following steps:

1. Remove the bezel.

2. Note the location and orientation of all cables attached to the drives in the drive cage, then disconnect the cables.

3. Remove the screw that secures the drive cage to the chassis.

4. Slide the drive cage forward approximately 1/2-inch, then lift it up (to the side for the desktop chassis) and away from the chassis. The side of the chassis contains three detents that secure the drive cage to the side of the chassis. The drive cage may be slightly difficult to slide forward until it detaches from these detents.

3.5-Inch Front-Panel Insert 

To remove a 3.5-inch insert, perform the following steps:

1. Remove the bezel.

2. From the back of the bezel, as shown for the mini tower chassis, press the release tab to the side, rotate the insert toward you, and remove it from the bezel.

5.25-Inch Front-Panel Insert

Tabs (6)

Tabs (2)

Release tab

NOTE: For mini tower computers, you must remove the upper insert to remove the lower insert.

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