Dell Dimension L c Series Bedienungsanleitung

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Information in this document is subject to change without notice.

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

Trademarks used in this text: Dell, the DELL logo, Be Direct, and Dimension are trademarks and DellWare is a service mark of Dell

Computer Corporation; Intel and LANDesk are registered trademarks and Celeron and MMX are trademarks of Intel Corporation;

MS-DOS, Microsoft, Windows, and Windows NT are registered trademarks of Microsoft Corporation.

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.

July 1999 P/N 3558P Rev. A01

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Use the following safety guidelines to help protect your computer system from poten-

tial damage and to ensure your own personal safety.

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As you use your computer system, observe the following safety guidelines.

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To help avoid damaging your computer, be sure the voltage selection switch on

the power supply is set to match the AC power available at your location:

 115 volts (V)/60 hertz (Hz) in most of North and South America and some Far

Eastern countries such as South Korea and Taiwan

 100 V/50 Hz in eastern Japan and 100 V/60 Hz in western Japan

 230 V/50 Hz in most of Europe, the Middle East, and the Far East

Also be sure your monitor and attached devices are electrically rated to operate

with the AC power available in your location.

Before working inside the computer, unplug the system to help prevent electric

shock or system board damage. Certain system board components continue to

receive power any time the computer is connected to AC power.

To help avoid possible damage to the system board, wait 5 seconds after turning

off the system before disconnecting a device from the computer.

To help prevent electric shock, plug the computer and device power cables into

properly grounded power sources. These cables are equipped with three-prong

plugs to help ensure proper grounding. Do not use adapter plugs or remove the

grounding prong from a cable. If you must use an extension cable, use a three-

wire cable with properly grounded plugs.

To help protect your computer system from sudden, transient increases and

decreases in electrical power, use a surge suppressor, line conditioner, or un-

interruptible power supply (UPS).

Be sure nothing rests on your computer systems cables and that the cables are

not located where they can be stepped on or tripped over.

Do not spill food or liquids on your computer. If the computer gets wet, refer to

If Your Computer Gets Wet in Chapter 6.

Do not push any objects into the openings of your computer. Doing so can cause

fire or electric shock by shorting out interior components.

Keep your computer away from radiators and heat sources. Also, do not block

cooling vents. Avoid placing loose papers underneath your computer; do not

place your computer in a closed-in wall unit or on a bed, sofa, or rug.

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For comfort and efficiency, observe the following ergonomic guidelines when setting

up and using your computer system:

Position your system so that the monitor and keyboard are directly in front of you

as you work. Special shelves are available (from Dell and other sources) to help

you correctly position your keyboard.

Set the monitor at a comfortable viewing distance (usually 510 to 610 millimeters

[20 to 24 inches] from your eyes).

Make sure the monitor screen is at eye level or slightly lower when you are sitting

in front of the monitor.

Adjust the tilt of the monitor, its contrast and brightness settings, and the lighting

around you (such as overhead lights, desk lamps, and the curtains or blinds on

nearby windows) to minimize reflections and glare on the monitor screen.

Use a chair that provides good lower back support.

Keep your forearms horizontal with your wrists in a neutral, comfortable position

while using the keyboard or mouse.

Always leave space to rest your hands while using the keyboard or mouse.

Let your upper arms hang naturally at your sides.

Sit erect, with your feet resting on the floor and your thighs level.

When sitting, make sure the weight of your legs is on your feet and not on the

front of your chair seat. Adjust your chairs height or use a footrest, if necessary,

to maintain proper posture.

Vary your work activities. Try to organize your work so that you do not have to

type for extended periods of time. When you stop typing, try to do things that

use both hands.

vii

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Before you remove the computer cover, perform the following steps in the sequence

indicated.

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1. Turn off your computer and any devices.

2. Ground yourself by touching an unpainted metal surface on the chassis, such as

the metal around the card-slot openings at the back of the computer, before

touching anything inside your computer.

While you work, periodically touch an unpainted metal surface on the computer

chassis to dissipate any static electricity that might harm internal components.

monitor screen at or below eye level

wrists relaxed and flat

arms at desk level

monitor and

keyboard

positioned

directly

in front of user

feet flat on the floo

viii

3. Disconnect your computer and devices from their power sources. Also, discon-

nect any telephone or telecommunication lines from the computer.

Doing so reduces the potential for personal injury or shock.

In addition, take note of these safety guidelines when appropriate:

When you disconnect a cable, pull on its connector or on its strain-relief loop, not

on the cable itself. Some cables have a connector with locking tabs; if you are dis-

connecting this type of cable, press in on the locking tabs before disconnecting

the cable. As you pull connectors apart, keep them evenly aligned to avoid bend-

ing any connector pins. Also, before you connect a cable, make sure both

connectors are correctly oriented and aligned.

Handle components and cards with care. Dont touch the components or con-

tacts on a card. Hold a card by its edges or by its metal mounting bracket.

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Static electricity can harm delicate components inside your computer. To prevent

static damage, discharge static electricity from your body before you touch any of

your computers electronic components, such as the microprocessor. You can do so

by touching an unpainted metal surface on the computer chassis.

As you continue to work inside the computer, periodically touch an unpainted metal

surface to remove any static charge your body may have accumulated.

You can also take the following steps to prevent damage from electrostatic discharge

(ESD):

When unpacking a static-sensitive component from its shipping carton, do not

remove the component from the antistatic packing material until you are ready to

install the component in your computer. Just before unwrapping the antistatic

packaging, be sure to discharge static electricity from your body.

When transporting a sensitive component, first place it in an antistatic container

or packaging.

Handle all sensitive components in a static-safe area. If possible, use antistatic

floor pads and workbench pads.

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This guide is intended for anyone who uses a Dell Dimension Lxxxc system. It can be

used by both first-time and experienced computer users who want to learn about the

features and operation of the systems or who want to upgrade their computers. The

chapters and appendixes are summarized as follows:

Chapter 1, Introduction, provides an overview of the system features and infor-

mation on preventive maintenance to protect the computer.

Chapter 2, Installing Upgrades on the System Board, provides information on

performing various upgrades, such as installing additional memory. The chapter

includes a basic orientation to internal features of the computer.

Chapter 3, Installing Drives, provides instructions on how to install and remove

drives.

Chapter 4, Basic Troubleshooting, contains checklists to use before calling Dell

for technical assistance.

Chapter 5, Software Solutions, has information on using audio utilities and

reinstalling software.

Chapter 6, Checking Inside Your Computer, presents troubleshooting proce-

dures for system components such as expansion cards, memory, and drives.

Chapter 7, Getting Help, provides information on obtaining technical assis-

tance. Users who have been unable to resolve problems using the

troubleshooting information provided in this guide can refer to this chapter.

Appendix A, System Specifications, is supplemental reference material.

Appendix B, System Setup Program, describes the system setup program

used for checking and changing system configuration data.

Appendix C, Diagnostic Codes, Beep Codes, and System Messages, docu-

ments status and error messages generated during system start-up. Included are

possible causes and corrective actions.

Appendix D, Regulatory Notices, provides regulatory information on the system.

Appendix E, Warranty, Return Policy, and Year 2000 Statement of Compliance,

describes the warranty for your Dell system and the Total Satisfaction Return

Policy.

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Dell Computer Corporation (Dell) manufactures its hardware products from parts

and components that are new or equivalent to new in accordance with industry-

standard practices. For information about the Dell warranty for your system, see

Appendix E, Warranty, Return Policy, and Year 2000 Statement of Compliance.

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Besides this Reference and Troubleshooting Guide, the following documentation is

included with your system:

The Getting Started sheet provides step-by-step instructions for setting up your

computer system.

The Dell Dimension Systems Setup Guide describes how to configure your oper-

ating system and connect a printer.

The Dell Dimension Lxxxc Systems Help is an HTML Help file that describes your

systems features, explains how to use software and hardware, and provides

answers to frequently asked questions. To access the Help, click the Start but-

ton, point to Programs> Dell Documents, and then click Dell Dimension

Lxxxc Systems Help. You may also double-click the Dell Documentation icon

on the Windows desktop, click System Documentation, and then click Dell

Dimension Lxxxc Systems Help.

The Dell Dimension Lxxxc Systems Reference is an HTML Reference file that

provides technical information about your system, such as interrupt request (IRQ)

assignments, system board connector designations, and error message descrip-

tions. To open the Reference, click the Start button, point to Programs> Dell

Documents, and then click Dell Dimension Lxxxc Systems Reference. You may

also double-click the Dell Documentation icon on the Windows desktop, click

System Documentation, and then click Dell Dimension Lxxxc Systems

Reference.

You may also have one or more of the following documents.

NOTE: Documentation updates are sometimes included with your system to describe

changes to your system or software. Always read these updates before consulting

any other documentation because the updates often contain the latest information.

Operating system documentation is included.

Documentation is included with any options you purchase separately from your

system. The documentation contains configuration information and supplements

the installation instructions provided in this guide.

Technical information filessometimes called readme filesmay be installed

on your hard-disk drive to provide last-minute updates about technical changes to

your system or reference material intended for experienced users.

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The following subsections describe notational conventions used in this document.

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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:

NOTE: A NOTE indicates important information that helps you make better use of

your computer system.

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The following list defines (where appropriate) and illustrates typographical conven-

tions used as visual cues for specific elements of text throughout this document:

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.

Keycaps are labels that appear on the keys on a keyboard. They are enclosed in

angle brackets.

Example: <Enter>

Key combinations are series of keys to be pressed simultaneously (unless other-

wise indicated) to perform a single function.

Example: <Ctrl><Alt><Enter>

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 instruc-

tion and intended to be typed.

Example: Type IRUPDWD to format the diskette in drive A.

Filenames and directory names are presented in lowercase bold.

Examples: autoexec.bat and c:\windows

xii

Screen text is a message or text that you are instructed to type as part of a com-

mand (referred to as a command line). Screen text is presented in the Courier

New font.

Example: The following message appears on your screen:

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Example: Type PGF?SURJUDPV and press <Enter>.

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

italics.

Example: DIMM_x (where xrepresents the DIMM socket designation)

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