Page 1 ®...
Page 2 Prodigy Services Co.; Lotus is a registered trademark of Lotus Development 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.
Page 3: Safety Instructions
If your computer gets wet or is damaged, follow the procedures described in Chapter 3, “Troubleshooting Your Computer.” If, after following these procedures, you confirm that your computer is not operating prop- erly, contact Dell Computer Corporation. (See Chapter 5, “Getting Help,” for the appropriate tele- phone number.)
Page 4: Ergonomic Computing Habits
Ergonomic Computing Habits For maximum comfort and efficiency, observe the fol- lowing ergonomic guidelines when setting up and using your computer: • Position your computer directly in front of you as you work. • Adjust the tilt of the computer’s display, its contrast or brightness settings, and the lighting around you (such as overhead lights, desk lamps, and the cur- tains or blinds on nearby windows) to minimize...
Page 5: When Removing Or Installing Memory Modules
When Removing or Installing Memory Modules Before removing or installing memory modules, perform the following steps in the sequence indicated. NOTE: The only time you should ever access the inside of your computer is when you are installing memory modules. Turn off your computer and any attached peripherals.
Page 6 viii...
Page 7 This Guide This guide is intended for anyone who uses the Dell Latitude LM portable computer. It can be used by both first-time and experienced computer users who want to learn about the features of the computer. This guide also...
Page 8 Read this online document before calling Dell for technical assistance. Look for the Dell Q&A icon in the Dell Accessories group. The Dell DiskMaker helps you with one of the most critical parts of setting up your system—...
Page 9 In contrast, commands presented in the Courier New font are intended to be typed as part of an instruction. Example: “Type setup to format the diskette in drive A.” • Filenames and directory names are presented in lowercase bold. Examples: autoexec.bat and c:\windows •...
Page 11: Table Of Contents
Chapter 1 Introduction ......... . . 1-1 Hardware Features.
Page 12 Security Menu Options ..........2-6 Admin Password .
Page 13 Chapter 4 Running the Dell Diagnostics ......4-1 Features of the Dell Diagnostics ......... 4-1 When to Use the Dell Diagnostics .
Page 14 Tests in the Dell Diagnostics ........
Page 15 Dell Diagnostics Program ........
Page 16 Appendix B Diagnostic Video Tests ........B-1 Video Memory Test .
Page 17 Installation and Labeling........C-2 Load Number .
Page 18 Dell Contact Numbers ........5-9...
Page 19: Introduction
® ® he Dell Latitude LM is an expandable, multi- media portable computer designed around the Intel ® Pentium microprocessor and Peripheral Component Interconnect (PCI) technology. This chapter describes the status display panel touch pad hard-disk drive touch pad buttons (2) power button Figure 1-1.
Page 20: Hardware Features
Dell Latitude LM Reference and Troubleshooting Guide expansion connector NOTE: Your computer was shipped with a diskette drive in the options bay. When you want to use the CD-ROM drive, turn off the computer, remove the diskette drive, and install the CD-ROM drive.
Page 21: Software Features
NOTE: The battery is designed to work only with Dell Latitude LM computers. Do not attempt to use the battery with other computers. WARNING: Do not puncture or incinerate the battery or dispose of it in a landfill. Instead, return the battery to Dell for proper disposal or recycling.
Page 22: Accessing Online Documentation
If at any time you don’t understand a procedure described from PRINT TOPIC in this guide, or if your computer does not perform as expected, Dell provides a number of tools to help you. For more information on these help tools, see Chapter 5, “Getting Help.”...
Page 23: Customizing System Features
Dell highly recommends that you use the Dell DiskMaker in the Dell Accessories folder or group to back up the sys- tem utilities. If your hard-disk drive becomes corrupted, you can use the program diskettes to reinstall the utilities.
Page 24: Setup Program
The system then prompts you to enter the setup program to correct the setting. Dell Latitude LM Reference and Troubleshooting Guide You can use the Setup program as follows: •...
Page 25: Date
PhoenixBIOS Setup — Copyright 1985-95 Phoenix Technologies Ltd. Main Peripherals Security Power Exit Date: Time: Hard-Disk Drive 0: Boot Sequence: Diskette A: Total Memory: Video Memory F1 Help Select Item ESC Exit Select Menu Figure 2-1. Main Menu of Setup Program Date sets your system to the date you specify (usually the DATE...
Page 26: Diskette A
The following subsections explain each option in the Peripherals menu of the Setup program (Figure 2-2). The Dell Latitude LM Reference and Troubleshooting Guide same information is also available in the topic titled “Peripherals Menu” in the online System User’s Guide.
Page 27: Infrared
PhoenixBIOS Setup — Copyright 1985-95 Phoenix Technologies Ltd. Main Peripherals Security Power Exit Integrated Peripherals Serial Port: Infrared: Parallel Mode: Diskette Mode: Video Mode: Touch Pad: CD-ROM Drive Speed: F1 Help Select Item ESC Exit Select Menu Figure 2-2. Peripherals Menu of Setup Program Table 2-1.
Page 28: Parallel Mode
NOTE: When an external monitor is attached to the monitor connector, the computer does not enter suspend Dell Latitude LM Reference and Troubleshooting Guide mode when the display is closed. Instead, the computer sends its video signal to the external monitor.
Page 29: Admin Password
PhoenixBIOS Setup — Copyright 1985-95 Phoenix Technologies Ltd. Main Peripherals Security Power Exit Admin Password: Primary Password: Backup Password: Password on Boot: F1 Help Select Item ESC Exit Select Menu Figure 2-3. Security Menu of Setup Program Admin Password displays the current status of your ADMIN PASSWORD administrator password and lets you assign or change this password.
Page 30: Backup Password
In that case, you , insert a formatted must return the computer to Dell at your expense. > to save Technicians will disable the password feature and ENTER send the computer back to you at your expense.
Page 31: Power Savings
PhoenixBIOS Setup — Copyright 1985-95 Phoenix Technologies Ltd. Main Peripherals Security Power Exit Power Savings: AC Power Save: Standby Time-Out: Suspend Time-Out: Suspend-to-Disk Time-Out:: [10 min.] Hard-Disk Drive Time-Out: DIM Mode Time-Out: Smart CPU Mode: Alarm Resume: F1 Help Select Item ESC Exit Select Menu Figure 2-4.
Page 32: Suspend Time-Out
(the default), 3 MIN. activity, such as calculations, that rarely accesses the hard-disk drive. NOTE: To lengthen the life of the hard-disk drive, Dell recommends setting this option to the lowest possible set- ting that works for you. DIM Mode Time-Out...
Page 33: Smart Cpu Mode
Such alarms can be set through various application programs. In order for the alarms in these programs to work, this option must be set puter remains in suspend mode when it detects an alarm. is enabled. Dell recom- if you DISABLED Exit Menu Options The following subsections explain each option in the Exit menu of the Setup program (Figure 2-5).
Page 34: Save Changes & Exit
Setup program. Press < when prompted to continue. Then you can make more changes in the Setup program or select EXIT 2-12 Dell Latitude LM Reference and Troubleshooting Guide -/+ Change Values Enter Select Sub-Menu Load Previous Values LOAD PREVIOUS VALUES have made and restore the settings you previously saved.
Page 35: Troubleshooting Your Computer
Troubleshooting Your Computer f your Dell Latitude LM is not working as expected, this chapter provides initial checks for solving basic com- puter problems as well as detailed troubleshooting procedures. It lists system messages and beep codes, their possible causes, and actions you can take to resolve any problems indicated by a message or code.
Page 36: Checking Connections
AC adapter cable AC adapter AC power cable (to AC power source) Figure 3-1. AC Adapter and Power Cable Dell Latitude LM Reference and Troubleshooting Guide • The main battery battery release Figure 3-2. Checking the Battery • The secondary battery, if one is installed in the options bay Figure 3-3.
Page 37: Look And Listen
NUM LOCK toggle their respective indicators on and off in the status display panel. If the indicators do not appear, run the Keyboard Test Group in the Dell diagnostics (for instructions, see Chapter 4, “Running the Dell Diagnostics”). The diskette-drive access indicator should appear in the status display when data is accessed on the diskette drive.
Page 38: Setup Options
See the topic titled “Setup Program” in the online System User’s Guide for detailed information about the Setup program and its options. If, after checking the setup options, you have not resolved the problem, see Chapter 4, “Running the Dell Diagnostics.” Message Cause...
Page 39 Action Call Dell for technical assistance. (For instructions, see Chapter 5, “Getting Help.”) Run the Stuck Key Test in the Dell diagnostics. (For instructions, see Chapter 4, “Running the Dell Diagnostics.”) Reinstall the operating system. See the documentation that came with the operating system. If that fails to solve the problem, call Dell for technical assistance.
Page 40: System Beep Codes
(code 1-1-3) means that the computer was unable to read the data in non- volatile random-access memory (NVRAM). This information is invaluable to the Dell support staff if you need to call for technical assistance. Dell Latitude LM Reference and Troubleshooting Guide Table 3-2.
Page 41: Table 3-3. Beep Codes
Action See “Troubleshooting Memory” found later in this chapter Run the System Set Test Group in the Dell diagnostics. (See Chap- ter 4, “Running the Dell Diagnostics,” for instructions.) If the pro- gram does not load, call Dell for technical assistance. (For instructions, see Chapter 5, “Getting Help.”)
Page 42: Finding Software Solutions
You can confirm that a computer problem is caused by software by first running the System Set Test Group as described in Chapter 4, “Running the Dell Diagnostics.” If all tests in the test group complete successfully, the error condition is most likely caused by software.
Page 43: Using Software
When you boot the computer, MS-DOS recognizes memory in excess of 1 MB as extended memory. Some, but not all, programs are able to use extended memory. For example, the Windows operating system and Lotus 1-2-3 take advantage of extended memory. Other programs are able to use extended memory only if it is first converted into expanded memory by an expanded memory manager (EMM).
Page 44: Troubleshooting Procedures
NOTE: For the full name of an abbreviation or acronym used in this table, see the Glossary in the online System User’s Guide. 3-10 Dell Latitude LM Reference and Troubleshooting Guide roubleshooting Procedures This section provides troubleshooting procedures for built-in components (such as the display) and for external devices that connect to the computer (such as an external monitor).
Page 45: Troubleshooting A Damaged Computer
14. Does the computer work properly? Yes. The problem is resolved. No. If the computer is able to boot, run the Dell diag- nostics to identify computer damage. If the computer is unable to boot, see “Troubleshooting a Power Fail- ure”...
Page 46: Troubleshooting A Power Failure
“Running the Dell Diagnostics,” for instructions.) 10. If the computer does not operate properly, make a copy of the Diagnostics Checklist found in Chapter 5 and fill it out. Then call Dell for techni- cal assistance. (See Chapter 5, “Getting Help,” for instructions.)
Page 47: Total Power Failure When Using The Ac Adapter
AC power indicator appear in the status display panel? Yes. Go to step 6. No. The battery is defective. Call Dell for technical assistance. (See Chapter 5, “Getting Help,” for instructions.) Is there a single bar on the far left of the battery status indicator? Yes.
Page 48: No Power To A Part Of The Computer
Yes. The entire computer is receiving power; the problem is resolved. No. Adjust the brightness and contrast of the display. If the display still does not show an image, call Dell for technical assistance. (See Chapter 5, “Getting Help,” for instructions.) NOTE: Contrast cannot be adjusted on an active- matrix color display.
Page 49: Troubleshooting The Cd-Rom Drive
D? Yes. The problem is resolved. No. Go to step 7. Insert your Dell diagnostics diskette into drive A, and reboot the computer. Then run the IDE CD ROM Drives Test Group. Does your CD-ROM drive pass all the tests? Yes.
Page 50: Troubleshooting An External Keyboard
Call Dell for technical assistance. See Chapter 5, “Getting Help,” for instructions. 3-16 Dell Latitude LM Reference and Troubleshooting Guide Troubleshooting an External Keyboard When you attach an external keyboard, the built-in key- board is fully functional except for the embedded numeric keypad.
Page 51: Troubleshooting Memory
Do the characters appear on the display? Yes. The external keyboard may be defective. Run the Keyboard Test Group in the Dell diagnostics. If you cannot isolate the problem after running the diagnostics, call Dell for technical assistance.
Page 52: Troubleshooting An External Monitor
“Getting Help,” for instructions.) No. If you still have a display problem but the dis- play is not completely blank, run the Video Test Group in the Dell diagnostics. Then call Dell for technical assistance. (See Chapter 5, “Getting Help,” for instructions.) Turn off your computer, and connect an external monitor to the computer.
Page 53: Troubleshooting The Serial And Parallel Ports
Disconnect all peripherals from the computer. Attach another external monitor to the computer. If you do not have another external monitor, call Dell for technical assistance. (See Chapter 5, “Getting Help,” for instructions.) Reboot the computer, and adjust the monitor’s brightness and contrast.
Page 54: Troubleshooting A Parallel Printer
Turn on the computer and the serial device. Is the problem resolved? Yes. You probably need a new device. Call Dell for technical assistance. (See Chapter 5, “Getting Help,” for instructions.) No. Call Dell for technical assistance. (See Chap-...
Page 55: Troubleshooting The Infrared Port
No. Go to step 3. Insert your diagnostics diskette into drive A, reboot the computer, and run the Serial/IR Ports Test Group in the Dell diagnostics. (See Chapter 4, “Running the Dell Diagnostics.”) Do the tests complete successfully? The Serial/Infrared Ports Test Group checks the basic functions of the computer’s infrared logic.
Page 56: Troubleshooting Audio Functions
The problem is resolved. No. Go to step 3. 3-22 Dell Latitude LM Reference and Troubleshooting Guide Insert your diagnostics diskette into drive A, reboot the computer, and run the Audio Tests in the Dell diagnostics. (See Chapter 4, “Running the Dell Diagnostics.”) Do the tests complete...
Page 57: Running The Dell Diagnostics
Dell Diagnostics To troubleshoot components or devices, run the appropri- ate test (test group or subtest) in the diagnostics on your Dell Diagnostics Diskette. The diagnostics program exercises the functional components and devices of the computer more vigorously and thoroughly than they are exercised during normal operation.
Page 58: Before You Start Testing
NOTE: Before you read the rest of this chapter, you may want to start the Dell diagnostics so you can see the menus on your display. When you start the diagnostics, the Dell logo screen appears, and a program tests the random-access memory (RAM) that will be used by the diagnostics.
Page 59: How To Use The Dell Diagnostics
TESTS require user interaction and that do not take a long time to run. Dell recommends that you choose this option first to increase the odds of tracing the source of the problem quickly. For a com- plete check of your system, select the...
Page 60: Confirming The System Configuration Information
Main: Select Subtest Display the Run Menu. * On the Dell Latitude LM, a CD-ROM drive installed in the options bay is recognized as IDE Drive 1. Figure 4-2. Main Screen of the Dell Diagnostics onfirming the System Configuration Information...
Page 61: How To Use The Menu
, many of the same options as SUBTEST , and TEST LIMITS ABOUT KEY-HELP Running the Dell Diagnostics SUBTEST , five options , and in the Select in the SELECT QUIT MENU...
Page 62: Run Under Subtest
Main menu. For OPTIONS information on this option, see “Options” found later in this section. Dell Latitude LM Reference and Troubleshooting Guide Test Limits Under Subtest TEST LIMITS . If you select same manner as the information on this option, see “Test Limits”...
Page 63: Number Of Times To Repeat Test(S)
, the status mes- FILE , the error mes- FILE , the diagnostics pauses when parameter is set to , the diagnostics ignores because they require user parameter to when you want to PAUSE Running the Dell Diagnostics...
Page 64: Output Device For Status Messages
> key combination to CTRL reboot the computer. If necessary, start your operating system. Insert the Dell Diagnostics Diskette into the diskette drive. Double-click the Notepad icon. Then select from the File menu. In the File Name text box, type a:\result and press <...
Page 65: About
> key. The ests in the Dell Diagnostics remain in effect until The diagnostics is organized by components into test groups and subtests within each test group. Each subtest is designed to detect any errors that may interfere with the normal opera- tion of a specific device of the computer.
Page 66: Table 4-2. Dell Diagnostics Tests
(Non-SCSI) NOTE: For the full name of an abbreviation or acronym used in this table, see the Glossary in the online System User’s Guide. 4-10 Dell Latitude LM Reference and Troubleshooting Guide Table 4-2. Dell Diagnostics Tests Subtests Quick Test...
Page 67 Tests the SCSI controller in the Dell Lat- itude XP/XPi Advanced Port Replicator and all the SCSI devices attached to it. This test group does not apply to the Dell Lati- tude LM. Tests the read and write access capability of the network controller reg- isters in the Dell Latitude XP/XPi Advanced Port Replicator.
Page 68: Error Messages
Does not pause when an error occurs or a subtest finishes. Pause is the default value. 4-12 Dell Latitude LM Reference and Troubleshooting Guide The RAM Test program has switches so that you can set both test limits and options for the subtests from the MS-DOS prompt.
Page 69: Why Run A Ram Test
(You can confirm that the software is not at Running the Dell Diagnostics 4-13...
Page 70: Subtests
Thermal Control Test Checks the functionality of the thermal-monitoring and microprocessor speed-switching device on the system board. This test does not apply to the Dell Latitude LM. ideo Test Group The subtests in the Video Test Group verify the proper operation of the video controller and the video control circuitry installed in the computer.
Page 71: Subtests
Key- board Test Group. (Clear them from memory by booting the computer from the Dell Diagnostics Diskette.) When these possibilities have been eliminated, and if the following symptoms occur, you should run one or more of the subtests in the Keyboard Test Group: •...
Page 72: Subtests
• If the response when you press a touch pad or mouse button is different from the usual response or the 4-16 Dell Latitude LM Reference and Troubleshooting Guide response you anticipated, the button contact may be damaged. • A touch pad or mouse button does not work at all.
Page 73: Subtests
• Write Test Positions the read/write heads at each cylinder of the drive and verifies that all tracks on the drive can be written to correctly Running the Dell Diagnostics 4-17...
Page 74: Ide Cd Rom Drives Test Group
Seek Test Checks the drive’s ability to search for each block on the device. 4-18 Dell Latitude LM Reference and Troubleshooting Guide • Read Test Positions the read heads at each block of the device for reading data and verifies that all blocks on the device can be read correctly.
Page 75: Subtests
If your software and the diagnostics do not recognize that you have a parallel port, you should check the system setup option, and if necessary, PARALLEL MODE run the appropriate subtest in the Parallel Ports Test Group. Running the Dell Diagnostics system setup option 4-19...
Page 76: Subtests
The subtests in the Network Interface Test Group verify the basic operation of the network interface controller in the Dell Latitude Advanced Port Replicator. They test the controller’s internal functions, including read and write access to its registers and internal transmit and receive (loopback) capability.
Page 77 DMA con- troller and audio controller can exchange signals on that second DMA channel NOTE: The Dual Channel Test is performed only on Dell Latitude XPi systems. • FM Sound Playback Test Tests whether the system can synthesize sounds and play them through the built-in speaker(s) •...
Page 78 4-22 Dell Latitude LM Reference and Troubleshooting Guide...
Page 79: Getting Help
“AutoTech Service” found later in this chapter. elp Tools Dell provides a number of tools to assist you. Table 5-1 lists subjects you may want information about, tasks you may want to perform, and the tool(s) you can use for help.
Page 80: Dell Q&A
Dell anticipates your questions by providing the Dell Q&A, a Windows-based online file that answers ques- tions that are often asked by Dell computer users. Look for the Dell Q&A icon in the Dell Accessories folder or group. System User’s Guide The Windows-based online System User’s Guide includes...
Page 81: Commercial Online Services
This program provides valuable information that can help you fix the problem, or can help Dell technicians should you need to call Dell. See Chapter 4, “Running the Dell Diagnostics,” for instructions on using the diagnostics. You can use this diagnostic program to test major components or devices in the computer, if it can boot.
Page 82: Techconnect Bbs
Automated Order-Status System You can call this automated service to check on the status of any Dell products that you have ordered. A recording prompts you for the information needed to locate and report on your order. For the telephone number to call, see Table 5-3.
Page 83: Before You Call
If you must return a piece of hardware to Dell, a technician will assign a Return Material Authorization number. Record the number on the checklist, and include the filled-out checklist in the shipping box.
Page 84: Figure 5-1. Diagnostics Checklist
Programs and versions: _____________________________________________ _______________________________________________________________ _______________________________________________________________ _______________________________________________________________ _______________________________________________________________ _______________________________________________________________ Error message or beep code: ______________________________________________________________________ Description of problem and troubleshooting procedures you performed: ___________________________________ ____________________________________________________________________________________________ ____________________________________________________________________________________________ ____________________________________________________________________________________________ ____________________________________________________________________________________________ Figure 5-1. Diagnostics Checklist Dell Latitude LM Reference and Troubleshooting Guide Diagnostics Checklist...
Page 85: Dell Contact Numbers
Contact Numbers When you need to contact Dell, use the telephone num- bers and codes provided in Tables 5-2 and 5-3. Table 5-2 provides the various codes required to make long-dis- tance and international calls. Table 5-3 provides local...
Page 86: Table 5-2. International Dialing Codes
Poland (Warsaw) Singapore (Singapore) South Africa (Johannesburg) Spain (Madrid) Sweden (Upplands Vasby) Switzerland (Geneva) U.K. (Bracknell) U.S. (Austin, Texas) Dell Latitude LM Reference and Troubleshooting Guide Table 5-2. International Dialing Codes International Access Code Country Code 0011 — — 09/091...
Page 87: Table 5-3. Dell Contact Numbers
For technical assistance in this country after normal working hours, use one of the following numbers: (353-1) 204 4008 or (353-1) 286 5908 (English only—the call is rerouted to the U.S.). Table 5-3. Dell Contact Numbers (International call to the Netherlands)
Page 88 (353-1) 204 4008 or (353-1) 286 5908 (English only—the call is rerouted to the U.S.). 5-10 Dell Latitude LM Reference and Troubleshooting Guide Table 5-3. Dell Contact Numbers ..... toll free: 1-800-247-9362 (Automated technical support) .
Page 89 Table 5-3. Dell Contact Numbers Country Department Name or Service Denmark* Customer Care, Technical Support, and Sales....toll free: 800 171 62...
Page 90 For technical assistance in this country after normal working hours, use one of the following numbers: (353-1) 204 4008 or (353-1) 286 5908 (English only—the call is rerouted to the U.S.). 5-12 Dell Latitude LM Reference and Troubleshooting Guide Table 5-3. Dell Contact Numbers (Continued)
Page 91 Table 5-3. Dell Contact Numbers Country Department Name or Service Luxembourg* Customer Technical Support Customer Service NOTE: Customers in Luxembourg call Belgium Sales (Brussels, Belgium) for sales, customer assistance, and technical SalesFax assistance, and they call the Netherlands for the...
Page 92 (353-1) 204 4008 or (353-1) 286 5908 (English only—the call is rerouted to the U.S.). 5-14 Dell Latitude LM Reference and Troubleshooting Guide Table 5-3. Dell Contact Numbers ..........902.100.130...
Page 93 Table 5-3. Dell Contact Numbers Country Department Name or Service Sweden* Technical Support ......08 ....5900 5199 (Upplands Vasby) Customer Care .
Page 94 Dell Direct ........
Page 95: Technical Specifications
Technical Specifications Microprocessor type ....Intel Pentium microprocessor Microprocessor speed ... . . 100 or 133 MHz Internal cache memory .
Page 96 Audio ......microphone NOTE: For the full name of an abbreviation or acronym used in this table, see the Glossary in the online System User’s Guide. Dell Latitude LM Reference and Troubleshooting Guide (Continued) Memory...
Page 97 Table A-1. Technical Specifications Audio type..... . . SoundBlasterPro-compatible voice and Audio controller ....ESS 1688 Conversion .
Page 98 Controls......brightness can be controlled through key NOTE: For the full name of an abbreviation or acronym used in this table, see the Glossary in the online System User’s Guide. Dell Latitude LM Reference and Troubleshooting Guide (Continued) Video...
Page 99 Table A-1. Technical Specifications Type......dual-scan color (STN) Dimensions: Height ..... . 172.8 mm (6.8 inches) Width .
Page 100 Supply current ....4 mA (maximum operating current) NOTE: For the full name of an abbreviation or acronym used in this table, see the Glossary in the online System User’s Guide. Dell Latitude LM Reference and Troubleshooting Guide (Continued) Touch Pad with 0.5-mm (0.02-inch) tabs...
Page 101 Table A-1. Technical Specifications Type ......lithium ion Dimensions: Height ..... . 22.0 mm (0.86 inch) Depth .
Page 102 Storage ..... . –20 to 50 C (–4 to 122 F) NOTE: For the full name of an abbreviation or acronym used in this table, see the Glossary in the online System User’s Guide. Dell Latitude LM Reference and Troubleshooting Guide (Continued) AC Adapter...
Page 103 Weight (with hard-disk drive, diskette drive, battery, and two PC Card blanks): Dell Latitude LM P-100SD ..3.1 kg (6.9 lbs) Dell Latitude LM P-133ST ..3.1 kg (6.9 lbs)
Page 104 NOTE: For the full name of an abbreviation or acronym used in this table, see the Glossary in the online System User’s Guide. A-10 Dell Latitude LM Reference and Troubleshooting Guide Environmental (Computer) (Continued) (less than or equal to a pulse width of 2 ms)
Page 105: Appendix B Diagnostic Video Tests
Diagnostic Video Tests he Video Test Group of the diskette-based diagnostics consists of the following eight tests, each of which veri- fies a particular video function or group of functions on your built-in display or on an external monitor: • Video Memory Test —...
Page 106: Character Attributes Subtest (80
Figure B-1. 80-Column x 25-Line Character Set Subtest Screen Dell Latitude LM Reference and Troubleshooting Guide Character Attributes Subtest (40 x 25) The 40-column x 25-line character attributes subtest displays four lines of text, in 40-column by 25-line...
Page 107: Text Mode Color Test
ext Mode Color Test The Text Mode Color Test contains three subtests that check the video subsystem’s ability to present color in text modes. The following subsections describe these subtests. Color Attributes Subtest (80 x 25) The 80-column x 25-line color attributes subtest displays a pattern of 16 rows and 16 columns in 80-column by 25-line text mode.
Page 108: Color Attributes Subtest (40
The following subsections describe the Graphics Mode Test screens in the order in which they appear. Dell Latitude LM Reference and Troubleshooting Guide 320 x 200 Graphics Mode Screens The Graphics Mode Test displays two successive 320 x 200-pixel graphics mode screens. The first screen displays three pyramids in red, green, and yellow.
Page 109: 640 X 480 16-Color Graphics Mode Screen
Figure B-3. 640 x 480 2-Color Graphics Mode Screen 640 x 480 16-Color Graphics Mode Screen The 640- x 480-pixel 16-color graphics mode screen dis- plays a series of stars in 16 different colors with the name of the color beneath each star. Type y if all the stars are the correct colors;...
Page 110: Solid Colors Test
Type y if all the squares are the correct colors; otherwise, type n. Dell Latitude LM Reference and Troubleshooting Guide olid Colors Test The Solid Colors Test checks whether the video sub- system is displaying the correct colors.
Page 111: Regulatory Notices
FCC rules. In accordance with this regulation, the fol- lowing requirements should be observed. Type of Service Your Dell notebook modem is designed to be used on standard device telephone lines. The modem connects to the telephone line by means of a standard jack called the USOC RJ-11C.
Page 112: Telephone Company Procedures
Interference-Causing Equipment Standard #3 (ICES-003) as Class B digital devices. To determine which classifica- tion (Class A or B) applies to your computer (or other Dell digital apparatus), examine all registration labels located on the bottom or the back panel of your computer (or other digital apparatus).
Page 113: Canadian Modem Requirements
Dell system to the EMC (Electromagnetic Compati- bility) directive of the European Community. Such marking is indicative that this Dell system meets or exceeds the following technical standards: • EN 55022 — “Limits and Methods of Measurement of Radio Interference Characteristics of Information Technology Equipment.”...
Page 114: Vcci Notices (Japan Only
Safety of Information Technology Equipment including Electrical Business Equipment. A “Declaration of Conformity” in accordance with the above standards has been made and is on file at Dell Products Europe BV, Limerick, Ireland. CCI Notices (Japan only) Most Dell computer systems are classified by the Volun- tary Control Council for Interference (VCCI) as Class 2 information technology equipment (ITE).
Page 115: Class A Device
Class A Device Please note that this device has been approved for business purposes with regard to electromagnetic interference. If you find that this device is not suitable for your use, you may exchange it for a device that has been approved for use in residential as well as business environments.
Page 116 Dell Latitude LM Reference and Troubleshooting Guide...
Page 117: Warranties And Return Policy
(except as specifically noted); accessories or parts added to a Dell system after the sys- tem is shipped from Dell; accessories or parts added to a Dell system through Dell’s system integration depart- ment;...
Page 118: General
You will pay Dell for replacement parts if the replaced part is not returned to Dell within 30 days after the date the replacement part was shipped by Dell and for parts used to repair systems not covered by this limited war- ranty.
Page 119: Coverage During Year One
You will pay Dell for replacement parts if the replaced part is not returned to Dell within 30 days after the date the replacement part was shipped by Dell and for parts used to repair systems not covered by this limited war- ranty.
Page 120: Limited One-Year Warranty (U.s. Only)
(except as specifically noted); accessories or parts added to a Dell system after the sys- tem is shipped from Dell; accessories or parts added to a Dell system through Dell’s system integration depart- ment;...
Page 121: Limited One-Year Warranty (Canada Only)
(except as specifically noted); accessories or parts added to a Dell system after the sys- tem is shipped from Dell; accessories or parts added to a Dell system through Dell’s system integration depart- ment;...
Page 122: Total Satisfaction" Return Policy (U.s. And Canada Only
If you are an end-user customer who bought products directly from a Dell company, you may return them to Dell up to 30 days from the date of invoice for a refund of the product purchase price if already paid. This refund will not include any shipping and handling charges shown on your invoice.
Page 123: Index
About option in Dell diagnostics, 4-9 assistance technical, 5-1 telephone numbers, 5-7 warranty repair or credit, 5-4 audio functions troubleshooting, 3-22 Audio Test Group Dell diagnostics, 4-20 AutoTech service, 5-3 basic input/output system. See BIOS battery, 1-2 beep codes See also error messages...
Page 124 Dell Q&A, 5-2 device drivers, 3-9 diagnosing problems, 5-1 diagnostic program. See Dell diagnostics Diagnostics Checklist, 5-6 Dell Latitude LM Reference and Troubleshooting Guide disk. See diskette drive, hard-disk drive, CD-ROM drive diskette drive failure during POST, 3-14 testing, 4-16...
Page 125 3-9 interrupt request line. See IRQ IRQ lines, 3-10 keyboard checking external keyboard during POST, 3-16 Keyboard Test Group in Dell diagnostics, 4-15 Keyboard Test Group Dell diagnostics, 4-15 Key-Help option in Dell diagnostics, 4-9 lithium ion battery, 1-2...
Page 126 Parallel Ports Test Group in Dell diagnostics, 4-19 parallel printer troubleshooting, 3-20 PC Card slot, 1-2 Dell Latitude LM Reference and Troubleshooting Guide PC Cards, 1-3 PCMCIA cards. See PC Cards Personal System/2. See PS/2 ports. See parallel port, serial port...
Page 127 RAM count failure during POST, 3-17 RAM Test Group in Dell diagnostics, 4-12 random-access memory. See RAM regulatory notices, C-1 returns, 5-4 option in Dell diagnostics, 4-5 safety instructions ESD prevention, vii general, v working inside your computer, vii SCSI Devices Test Group...
Page 128 3-17 dropped or damaged computer, 3-11 external keyboard, 3-16 external monitor, 3-18 failure during RAM count, 3-17 Dell Latitude LM Reference and Troubleshooting Guide troubleshooting (continued) hard-disk drive failure during POST, 3-15 infrared port, 3-21 IRQ conflicts, 3-9...
Page 129 Video Test Group Dell diagnostics, 4-14 video tests Color Palettes Test, B-5 Graphics Mode Test, B-4 Solid Colors Test, B-6 Text Mode Character Test, B-1 Text Mode Color Test, B-3 Text Mode Pages Test, B-4 Video Hardware Test, B-1 Video Memory Test, B-1...

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Latitude

Dell Latitude LM Reference And Troubleshooting Manual

Chapter 1 Introduction

Chapter 2 Customizing System Features

Chapter 3 Troubleshooting Your Computer

Chapter 4 Running the Dell Diagnostics

Chapter 5 Getting Help

Appendix A

Technical Specifications

Appendix B Diagnostic Video Tests

Appendix C Regulatory Notices

Appendix D Warranties and Return Policy

Index

Quick Links

Troubleshooting

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Summary of Contents for Dell Latitude LM

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Table of Contents