Dell Latitude LM Instrukcja Użytkownika

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A-6 Dell Latitude LM Reference and Troubleshooting GuideTouch PadInterface . . . . . . . . . . . . . . . . . . . . . . . . PS/2-compatibleX/Y positio

Technical Specifications A-7Main BatteryType . . . . . . . . . . . . . . . . . . . . . . . . . . . lithium ionDimensions:Height . . . . . . . . . .

A-8 Dell Latitude LM Reference and Troubleshooting GuideAC AdapterInput voltage . . . . . . . . . . . . . . . . . . . . . 90 to 264 VAC Input current

Technical Specifications A-9Physical (Computer)Height . . . . . . . . . . . . . . . . . . . . . . . . . . 49.5 mm (1.95 inches)Width. . . . . . . . .

A-10 Dell Latitude LM Reference and Troubleshooting GuideEnvironmental (Computer) (Continued)Maximum shock:2Operating . . . . . . . . . . . . . . . .

Diagnostic Video Tests B-1Appendix BDiagnostic Video TestsThe Video Test Group of the diskette-based diagnostics consists of the following eight tests

B-2 Dell Latitude LM Reference and Troubleshooting GuideThe following subsections describe the subtests of the Text Mode Character Test in the order i

Diagnostic Video Tests B-3Text Mode Color Test The Text Mode Color Test contains three subtests that check the video subsystem’s ability to pr

B-4 Dell Latitude LM Reference and Troubleshooting GuideColor Attributes Subtest (40 x 25)The 40-column x 25-line color attributes subtest is the same

Diagnostic Video Tests B-5Figure B-3. 640 x 480 2-Color Graphics Mode Screen640 x 480 16-Color Graphics Mode ScreenThe 640- x 480-pixel 16-color grap

xiiiContentsChapter 1Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1Hardware Features. . . . .

B-6 Dell Latitude LM Reference and Troubleshooting GuideThe second screen is the red/green/blue (RGB) color combination screen. This screen allows you

Regulatory Notices C-1Appendix CRegulatory NoticesAll regulatory notices for the computer are located on the bottom of the computer.FCC Class B Notice

C-2 Dell Latitude LM Reference and Troubleshooting GuideTelephone Company ProceduresThe goal of the telephone company is to provide you with the best

Regulatory Notices C-3Note that Industry Canada regulations provide that changes or modifications not expressly approved by Dell Computer Corporation

C-4 Dell Latitude LM Reference and Troubleshooting Guide•EN 50082-1 — “Electromagnetic compatibility—Generic immunity standard Part 1: Residential, c

Regulatory Notices C-5Class A DevicePlease note that this device has been approved for business purposes with regard to electromagnetic interference.

C-6 Dell Latitude LM Reference and Troubleshooting Guide

Warranties and Return Policy D-1Appendix DWarranties and Return PolicyYour Dell portable computer is covered by either a three-year limited warranty o

D-2 Dell Latitude LM Reference and Troubleshooting Guidewarranty when a part requires replacement. You must report each instance of hardware failure t

Warranties and Return Policy D-3sold through the DellWare program) are not covered. Batteries for portable computers are covered only during the initi

xivSecurity Menu Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6Admin Password . . . . . . . . .

D-4 Dell Latitude LM Reference and Troubleshooting GuideThese provisions apply to Dell’s Canadian limited three-year warranty only. For provisions of

Warranties and Return Policy D-5These provisions apply to Dell’s U.S. limited one-year warranty only. For provisions of any on-site service contract c

D-6 Dell Latitude LM Reference and Troubleshooting GuideThese provisions apply to Dell’s Canadian limited one-year warranty only. For provisions of an

Index 1IndexAAboutoption in Dell diagnostics, 4-9assistancetechnical, 5-1telephone numbers, 5-7warranty repair or credit, 5-4audio functionstroublesho

2 Dell Latitude LM Reference and Troubleshooting Guidecords. See cablesCPU. See microprocessorcustomizing computer features, 2-1DDell diagnosticsabout

Index 3Ggetting help, 5-1graphics mode screens, B-4Graphics Mode Test, B-4grounding procedure, viiHhard drive. See hard-disk drivehard-disk drivetesti

4 Dell Latitude LM Reference and Troubleshooting Guidemonitor connector, 1-3Mouse TestDell diagnostics, 4-16NNetwork Interface Test GroupDell diagnost

Index 5RRAM count failure during POST, 3-17RAM Test Groupin Dell diagnostics, 4-12random-access memory. See RAMregulatory notices, C-1returns, 5-4Runo

6 Dell Latitude LM Reference and Troubleshooting GuideSystem Set Test GroupDell diagnostics, 4-13system utilities, 2-1TTechConnect BBS, 5-4TechFax ser

Index 7Video Test GroupDell diagnostics, 4-14video testsColor Palettes Test, B-5Graphics Mode Test, B-4Solid Colors Test, B-6Text Mode Character Test,

xvProgram Conflicts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-9Avoiding Interrupt Assignment Conflic

xviOptions Under Subtest . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-6Test Limits Under Subtest . . . . . . .

xviiIDE CD ROM Drives Test Group. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-18Why Run an IDE CD ROM Drives Test? .

xviiiAppendix BDiagnostic Video Tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-1Video Memory Test . . . . . . . . . . . .

xixInstallation and Labeling. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .C-2Load Number . . . . . . . . . . . . . .

xxFigure 3-1. AC Adapter and Power Cable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2Figure 3-2. Checking the Battery . . . . . .

Introduction 1-1Chapter 1IntroductionThe Dell® Latitude® LM is an expandable, multi-media portable computer designed around the Intel® Pentium® microp

Information in this document is subject to change without notice. 1994–1996 Dell Computer Corporation. All rights reserved.Printed in the United Sta

1-2 Dell Latitude LM Reference and Troubleshooting GuideFigure 1-2. Back View of the Portable Computer Hardware Features Your Dell co

Introduction 1-3NOTE: The battery is designed to work only with Dell Latitude LM computers. Do not attempt to use the battery with other computers.

1-4 Dell Latitude LM Reference and Troubleshooting GuideAccessing Online DocumentationThe online Dell Latitude LM System User’s Guide installed on you

Customizing System Features 2-1Chapter 2Customizing System Features As your computing environment changes, you may want to customize the configuration

2-2 Dell Latitude LM Reference and Troubleshooting Guide•Manage power consumption when using a batteryThe PowerPanel lets you adjust the com-puter’s p

Customizing System Features 2-3Figure 2-1. Main Menu of Setup ProgramDateDATE sets your system to the date you specify (usually the current date). Ty

2-4 Dell Latitude LM Reference and Troubleshooting GuideDiskette ADISKETTE A identifies the type of diskette drive being used by the computer. This op

Customizing System Features 2-5 Figure 2-2. Peripherals Menu of Setup ProgramInfraredINFRARED lets you map the address of the infrared port to avoid

2-6 Dell Latitude LM Reference and Troubleshooting GuideParallel ModePARALLEL MODE controls whether the computer’s paral-lel port acts as an AT-compat

Customizing System Features 2-7 Figure 2-3. Security Menu of Setup ProgramAdmin PasswordADMIN PASSWORD displays the current status of your administr

vSafety InstructionsWhen Using Your Computer As you use your computer, observe the following safety guidelines:•When traveling with your computer,

2-8 Dell Latitude LM Reference and Troubleshooting GuideBackup PasswordUse the BACKUP PASSWORD option to back up a pass-word onto a diskette. Use the

Customizing System Features 2-9.Figure 2-4. Power Menu of Setup ProgramPower SavingsSelect OFF if you want to disable all power savings, regardless o

2-10 Dell Latitude LM Reference and Troubleshooting GuideNOTE: Set this option to DISABLED if it causes compati-bility problems with your software.Su

Customizing System Features 2-11Smart CPU ModeSMART CPU MODE allows the computer to slow down the microprocessor automatically if it is not being used

2-12 Dell Latitude LM Reference and Troubleshooting Guide Figure 2-5. Exit Menu of Setup ProgramSave Changes & ExitAfter you have changed a se

Troubleshooting Your Computer 3-1Chapter 3Troubleshooting Your ComputerIf your Dell Latitude LM is not working as expected, this chapter provides init

3-2 Dell Latitude LM Reference and Troubleshooting GuideChecking Connections Loose or improperly connected cables are likely sources of problem

Troubleshooting Your Computer 3-3Look and Listen Looking at and listening to your computer is important in determining the source of a problem. Loo

3-4 Dell Latitude LM Reference and Troubleshooting GuideSetup OptionsYou can easily correct certain system problems by verify-ing the settings for set

Troubleshooting Your Computer 3-5Keyboard con-troller errorThe keyboard controller is faulty.Call Dell for technical assistance. (For instructions, se

viErgonomic Computing Habits For maximum comfort and efficiency, observe the fol-lowing ergonomic guidelines when setting up and using your computer

3-6 Dell Latitude LM Reference and Troubleshooting GuideSystem Beep Codes When errors occur during the boot routine that cannot be r

Troubleshooting Your Computer 3-7Table 3-3. Beep Codes Message Cause Action1-2 Memory module not being properly identified or usedSee “Troubleshoo

3-8 Dell Latitude LM Reference and Troubleshooting GuideFinding Software SolutionsBecause most computers have several application pro-grams installed

Troubleshooting Your Computer 3-9When you boot the computer, MS-DOS recognizes memory in excess of 1 MB as extended memory. Some, but not all, program

3-10 Dell Latitude LM Reference and Troubleshooting Guidesetting for each installed device. Then consult Table 3-4 to configure the device for one of

Troubleshooting Your Computer 3-114. Open the input/output (I/O) cover on the back of the computer, and ground yourself by touching one of the metal c

3-12 Dell Latitude LM Reference and Troubleshooting Guide4. Using a small screwdriver, remove the memory cover from the bottom of the computer. Remove

Troubleshooting Your Computer 3-13Total Power Failure When Using the AC AdapterIf no signs of power are present in the computer when using the AC adap

3-14 Dell Latitude LM Reference and Troubleshooting Guide8. Does the battery status indicator in the status display panel indicate that the battery is

Troubleshooting Your Computer 3-156. Call Dell for technical assistance. See Chapter 5, “Getting Help,” for instructions. Troubleshooting the CD-ROM D

viiWhen Removing or Installing Memory Modules Before removing or installing memory modules, perform the following steps in the sequence in

3-16 Dell Latitude LM Reference and Troubleshooting Guide3. Type c: and press <ENTER>. Then type dir and press <ENTER>. Does MS-DOS displa

Troubleshooting Your Computer 3-17keyboard to type some characters. Do the characters appear on the display?Ye s . The external keyboard may be defec

3-18 Dell Latitude LM Reference and Troubleshooting Guide6. Turn on the computer. Is the display on?Allow one minute for the computer to initialize it

Troubleshooting Your Computer 3-197. Turn off the computer and any attached periph-erals. Disconnect all peripherals from the computer. Attach another

3-20 Dell Latitude LM Reference and Troubleshooting Guide5. Insert your diagnostics diskette into drive A, reboot the computer, and run the Serial/Inf

Troubleshooting Your Computer 3-21Troubleshooting the Infrared Port This section provides a procedure for troubleshooting the computer’s infrar

3-22 Dell Latitude LM Reference and Troubleshooting GuideTroubleshooting Audio Functions This section provides a procedure for troubleshooting

Running the Dell Diagnostics 4-1Chapter 4Running the Dell DiagnosticsUnlike many diagnostic programs, the Dell diagnostics helps you check the comput

4-2 Dell Latitude LM Reference and Troubleshooting GuideBefore You Start Testing Follow these steps to safeguard your master copy of the Dell

Running the Dell Diagnostics 4-3For a quick check of your system, select the RUN QUICK TESTS option. This option runs only the subtests that do not re

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4-4 Dell Latitude LM Reference and Troubleshooting GuideFigure 4-2. Main Screen of the Dell DiagnosticsConfirming the System Configuration Informatio

Running the Dell Diagnostics 4-5How to Use the MenuOne of the menu options is already highlighted at the bot-tom of the screen. You can move the highl

4-6 Dell Latitude LM Reference and Troubleshooting GuideRun Under SubtestRUN in the Subtest menu displays five options: ONE, SELECTED, ALL, KEY-HELP,

Running the Dell Diagnostics 4-7Number of Times to Repeat Test(s) This parameter specifies the number of times the tests run when you select RUN. To

4-8 Dell Latitude LM Reference and Troubleshooting GuideOutput Device for Status Messages Ordinarily, all status messages appear only on the dis-play.

Running the Dell Diagnostics 4-9How you change a value for the limits of a test group or subtest depends on the type of parameter associated with it.

4-10 Dell Latitude LM Reference and Troubleshooting GuideTable 4-2. Dell Diagnostics TestsTest Groups Subtests Description

Running the Dell Diagnostics 4-11IDE CD ROM Drives Drive Controller TestSeek TestRead TestAudio Output TestEject Removable MediaTests an IDE drive tha

4-12 Dell Latitude LM Reference and Troubleshooting GuideError Messages When you run a test group or subtest in the diagnostics, error m

Running the Dell Diagnostics 4-13Why Run a RAM Test?Faulty memory can cause a variety of problems that may not, at first glance, appear to be happenin

ixPrefaceAbout This GuideThis guide is intended for anyone who uses the Dell Latitude LM portable computer. It can be used by both first-time and expe

4-14 Dell Latitude LM Reference and Troubleshooting Guidefault by moving the program to another computer and running it there.)•The computer halts in

Running the Dell Diagnostics 4-15Character Test, Text Mode Pages Test, and the Graphics Mode Test.•If the color on the display or external monitor is

4-16 Dell Latitude LM Reference and Troubleshooting GuideSubtestsThe four keyboard subtests confirm the following key-board functions:•Keyboard Contro

Running the Dell Diagnostics 4-17SubtestsThe four diskette drive subtests available in the Diskette Drives Test Group confirm the following drive func

4-18 Dell Latitude LM Reference and Troubleshooting GuideIDE CD ROM Drives Test Group The subtests in the IDE CD ROM Drives Test Group check the f

Running the Dell Diagnostics 4-19If the external device is not properly installed through software, the device also may not function properly. Try ope

4-20 Dell Latitude LM Reference and Troubleshooting GuideSubtestsThe four subtests in the Parallel Ports Test Group confirm the following port functio

Running the Dell Diagnostics 4-21•DMA TestTests for the presence of a DMA channel on the sys-tem chip set, and determines if the DMA controller and th

4-22 Dell Latitude LM Reference and Troubleshooting Guide

Getting Help 5-1Chapter 5Getting HelpThis chapter describes the tools Dell provides to help you when there is a problem with the computer. It also tel

xOther Documents You May NeedBesides this Reference and Troubleshooting Guide, the fol-lowing online documentation is included with your computer:The

5-2 Dell Latitude LM Reference and Troubleshooting GuideDell Q&ADell anticipates your questions by providing the Dell Q&A, a Windows-based onl

Getting Help 5-3Log in as user: anonymous, and use your e-mail address as your password. •Electronic Support [email protected] •Electronic Quote

5-4 Dell Latitude LM Reference and Troubleshooting GuideFor the TechFax telephone number, see Table 5-3.NOTE: TechFax is not always available in all

Getting Help 5-55. Pack the equipment to be returned in the original (or equivalent) packing materials.Include return shipping expenses. You are respo

5-6 Dell Latitude LM Reference and Troubleshooting GuideFigure 5-1. Diagnostics ChecklistName: ______________________________________________________

Getting Help 5-7Dell Contact Numbers When you need to contact Dell, use the telephone num-bers and codes provided in Tables 5-2 and 5-3.

5-8 Dell Latitude LM Reference and Troubleshooting GuideTable 5-2. International Dialing CodesCountry (City)InternationalAccess Code Country Code Cit

Getting Help 5-9Table 5-3. Dell Contact NumbersCountryArea Local Number orDepartment Name or Service Code Toll-Free NumberAustralia(Sydney)Customer T

5-10 Dell Latitude LM Reference and Troubleshooting GuideCanada(North York, Ontario)NOTE: Customers in Canada call theU.S. for access to TechConnect

Getting Help 5-11Denmark*(Horsholm)Customer Care, Technical Support, and Sales. . . . . . . . . . . . . . . . . . . toll free: 800 171 62Finland*(Hels

xiIn contrast, commands presented in the Courier New font are intended to be typed as part of an instruction. Example: “Type setup to format the disk

5-12 Dell Latitude LM Reference and Troubleshooting GuideIreland*(Bray)Customer Technical Support . . . . . . . . . . . . . . . . . . . . . . . . . .

Getting Help 5-13Luxembourg*NOTE: Customers in Luxembourg call Belgium for sales, customer assistance, and technical assistance, and they call the Net

5-14 Dell Latitude LM Reference and Troubleshooting GuideNew Zealand Technical Support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Getting Help 5-15Sweden*(Upplands Vasby)Technical Support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 08 . . . . . . . . . . . . . . .

5-16 Dell Latitude LM Reference and Troubleshooting GuideU.S.(Austin, Texas)Automated Order-Status System . . . . . . . . . . . . . . . . . . . . . .

Technical Specifications A-1Appendix ATechnical SpecificationsPCTable A-1. Technical Specifications MicroprocessorMicroprocessor type . . . . . . . .

A-2 Dell Latitude LM Reference and Troubleshooting GuideMemoryArchitecture . . . . . . . . . . . . . . . . . . . . . fast-page mode, two-way interlea

Technical Specifications A-3AudioAudio type. . . . . . . . . . . . . . . . . . . . . . . SoundBlasterPro-compatible voice and music functionsAudio con

A-4 Dell Latitude LM Reference and Troubleshooting GuideVideoVideo type. . . . . . . . . . . . . . . . . . . . . . . 64-bit (128-bit hardware-accelera

Technical Specifications A-5Dual-Scan DisplayType. . . . . . . . . . . . . . . . . . . . . . . . . . . . dual-scan color (STN)Dimensions:Height . . .