Главная > Ноутбуки > Dell > LATITUDE D400 > Страница 2

Dell LATITUDE D400 – страница 2

Инструкция к Ноутбуку Dell LATITUDE D400

Customizing Your Computer: Dell™ Latitude™ CS/CS x Portable Computers User's Guide

Back to Contents Page

Using the System Setup Program

System Setup Options

Power Management Settings

Suspend-to-Disk Utility

Back to Contents Page

Dell™ Diagnostics: Dell Latitude™ CS/CS x Portable Computers User's Guide

Overview

Unlike many diagnostic programs, the Dell Diagnostics helps you check your computer's hardware without any additional equipment and without

destroying any data. By using the diagnostics, you can have confidence in your computer's operation. And if you find a problem you cannot solve

by yourself, the diagnostic tests can provide you with important information you will need when talking to Dell's service and support personnel.

NOTICE: Use the Dell Diagnostics to test only your Dell computer. Using this program with other computers may cause incorrect

computer responses or result in error messages.

Features of the Dell Diagnostics

The Dell Diagnostics provides a series of menus and options from which you choose particular test groups or subtests. You can also control the

sequence in which the tests are run. The diagnostic test groups or subtests also have these helpful features:

Options that let you run tests individually or collectively

An option that allows you to choose the number of times a test group or subtest is repeated

The ability to display or print out test results, or to save them in a file

Options to temporarily suspend testing if an error is detected, or to terminate testing when an adjustable error limit is reached

Devices

menu that briefly describes each test and its parameters

Config

menu that describes the configuration of the devices in the selected device group

Status messages that inform you whether test groups or subtests were completed successfully

Error messages that appear if any problems are detected

When to Use the Dell Diagnostics

Whenever a major component or device in your computer does not function properly, you may have a component failure. As long as the

microprocessor and the input and output components of your computer (the display, keyboard, and diskette drive) are working, you can use the

Dell Diagnostics. If you are experienced with computers and know what component(s) you need to test, simply select the appropriate diagnostic

test group(s) or subtest(s). If you are unsure about how to begin diagnosing a problem, read the rest of this section.

Before You Start Testing

If Dell installed the Microsoft

Windows

95 or Windows 98 operating system on your computer's hard-disk drive

, see the online help in Dell's

Program Diskette Maker

utility, which is available in the

Dell

Accessories

group or folder, for instructions on making a program diskette set

from the diskette image.

Refer to your operating system's documentation for information on how to duplicate diskettes. Put the original diskette away for safekeeping. Turn

on your printer if one is attached, and make sure it is online.

Enter the System Setup program

, confirm your computer's system configuration

information, and enable all its components and devices, such as ports.

Starting the Dell Diagnostics

After you complete the preliminary instructions specified in "

Before You Start Testing

," perform the following steps to start the diagnostics:

Overview

Starting the Dell Diagnostics

Features of the Dell Diagnostics

Dell Diagnostics Main Screen Overview

When to Use the Dell Diagnostics

Confirming the System Configuration Information

Before You Start Testing

How to Use Dell Diagnostics

1. Turn off the computer.

2. Insert the first diagnostics diskette into the diskette drive.

3. Turn on the computer.

When you start the diagnostics, the Dell logo screen appears, followed by a message telling you that the diagnostics is loading. Follow the screen

prompts to insert the second and third diskettes.

After the diagnostics loads, the

Diagnostics

appears (see

Figure 1

). The menu allows you to run all or specific diagnostic tests or to exit to

the MS-DOS

prompt.

For a quick check of your computer, select

Quickly Test All Devices

. This option runs only the subtests that do not 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 thorough check of your computer, select

Fully Test All Devices

. To check a particular area of your computer, select

Select

Devices to Test

To select an option from this menu, highlight the option and press <Enter>, or press the key that corresponds to the highlighted letter in the option

you choose.

Figure 1. Diagnostics Menu

Dell Diagnostics Main Screen Overview

When you select

Select Devices to Test

from the

Diagnostics

, the main screen of the diagnostics appears (see

Figure 2

). The main

screen lists the diagnostic test device groups, lists the devices of the selected device group, and allows you to select categories from a menu.

From this screen, you can enter two other types of screens.

Information on the main screen of the diagnostics is presented in the following five areas:

Two lines at the top of the screen identify the version number of the Dell Diagnostics.

On the left side of the screen, the

Device

Group

s area lists the diagnostic test groups in the order they will run if you select

All

from the

Run

tests

menu. Press the up- or down-arrow key to highlight a test device group.

On the right side of the screen, the

Devices for Highlighted Group

area lists the computer's currently detected hardware and some of the

relevant settings.

The lower-right side of the screen displays information about your drive(s).

Two lines at the bottom of the screen make up the menu area. The first line lists the categories you can select; press the left- or right-arrow

key to highlight a menu category. The second line gives information about the category currently highlighted.

Figure 2. Dell Diagnostics Main Screen

NOTE: Before you read the rest of this subsection, you may want to start the Dell Diagnostics so that you can see it on your display.

NOTE: The options displayed on your screen should reflect the hardware configuration of your computer.

Confirming the System Configuration Information

When you boot your computer from your diagnostics diskette, the diagnostics checks your system configuration information and displays it in the

Device Groups

area on the main screen.

The following sources supply this configuration information for the diagnostics:

The system configuration information settings (stored in nonvolatile random-access memory [NVRAM]) that you selected while using the

System Setup program

Identification tests of the microprocessor, the video controller, the keyboard controller, and other key components

Basic input/output system (BIOS) configuration information temporarily saved in RAM

Do not be concerned if the

Device Groups

area does not list the names of all the components or devices you know are part of your computer. For

example, you may not see a printer listed, although you know one is attached to your computer. Because your printer is a parallel communications

device, the computer recognizes the printer by its LPT1 address and identifies it as a parallel port. You can test your printer connection in the

Parallel Ports

tests.

How to Use Dell Diagnostics

Six comprehensive, menu-driven, online Help categories provide instructions on how to use the program and explain each menu item, test group,

subtest, and test and error result. To enter the

Help

menu, perform the following steps:

1. Highlight

Select Devices to Test

in the

Diagnostics

2. Press <Enter>.

3. Press <h>.

The

Help

menu categories are

Keys

Device

Group

Device

Test

, and

Versions

. The online Help also provides detailed descriptions of

the devices that you are testing. The

Help

categories are explained in the following subsections.

Menu Category

describes the main menu screen area, the

Device

Groups

, and the different diagnostic menus and commands and instructions on how to

use them.

Keys Category

Keys

explains the functions of the all of the keystrokes that can be used in Dell Diagnostics.

Device Group Category

Device Group

describes the test group that is presently highlighted in the

Device

Groups

list on the main menu screen. It also provides

reasoning for using some tests.

Device Category

Device

is the educational section of online Help. It describes the function and purpose of the highlighted device in the

Device

Groups

For example, the following information appears when you select

Device

for

Diskette

in the

Device

Groups

list:

Diskette drive A:

The diskette disk drive device reads and writes data to and from diskettes. Diskettes are flexible

recording media, sometimes contained in hard shells. Diskette recording capacities are small and

access times are slow relative to hard disk drives, but they provide a convenient means of storing

and transferring data.

Test Category

Test

provides a thorough explanation of the subtest for each selected device group. For example, the following description is provided for the

Diskette Drive Seek Test

Diskette drive A: - Diskette Drive Seek Test

This test verifies the drive's ability to position its read/write heads. The test operates in two

passes: first, seeking from the beginning to ending cylinders inclusively, and second, seeking

alternately from the beginning to ending cylinders with convergence towards the middle.

Versions Category

Versions

lists the version numbers of the subtests that are used by the Dell Diagnostics.

Back to Contents Page

Diskette Drive: Dell™ Latitude™ CS/CS x Portable Computers User's Guide

Your computer was shipped with a 3.5-inch diskette drive installed in the external media bay. For more information on using and installing devices

in the external media bay, see "

Using the External Media Bay

The diskette drive lets you install programs and transfer data using 3.5-inch diskettes.

To use the diskette drive, insert a 3.5-inch diskette into the drive (label side up and metal end first). Push the diskette into the drive until the eject

button extends outside the drive casing.

NOTICE:

Do not travel with a diskette in the diskette drive. Doing so could break the eject button and damage the drive.

To remove a diskette from the drive, press the eject button to release the diskette, and then pull the diskette out of the drive.

When data is being accessed from the diskette drive, the

drive access indicator

blinks.

Back to Contents Page

NOTE: As an alternative diskette drive configuration, you can

connect the diskette drive to the parallel connector

on the back of the

computer using an optional cable available from Dell. If you are running either the Microsoft

Windows

95 or Windows 98 operating

system on your computer and the

Diskette Reconfig

option is enabled in the System Setup program, you do not have to reboot the

computer when you connect the diskette drive to the parallel connector. If you are running the Microsoft Windows NT

operating system

on your computer, reboot the computer after you connect the diskette drive.

Back to Contents Page

Display: Dell™ Latitude™ CS/CS x Portable Computers User's Guide

Adjusting the Brightness

To adjust the brightness of the display, you can use the key combinations shown in

Table 1

Table 1. Brightness Key Combinations and Their Functions

Expanded Video Mode

When working in text mode, you can select the font used to display text. Press <Fn><F7> to toggle between regular video mode and expanded

video mode. In expanded video mode, items in resolutions other than 1024 x 768 expand to fill the screen, which is useful if you are working in 800

x 600 resolution on a 13.3-inch extended graphics array (XGA) display.

Video Drivers and Video Resolution

The Dell-installed video drivers work with the operating system to let you customize the video resolution, number of screen colors, and refresh rate

of your display.

Table 2. Combinations of Resolutions and Colors Supported

Adjusting the Brightness

Customizing Video Resolution

Expanded Video Mode

Dual-Display Mode

Video Drivers and Video Resolution

If You Have Display Problems

NOTE: When you run the computer on battery power, set your computer's brightness control to the lowest setting that affords

comfortable viewing. You can extend your battery life by using the minimum brightness setting.

Key Combinations

Function

<Fn> + down arrow

Decreases brightness

<Fn> + up arrow

Increases brightness

<Fn> + right arrow

Has no effect on this computer

<Fn> + left arrow

Has no effect on this computer

NOTES: You cannot change contrast on an active-matrix (thin film transistor [TFT]) display, such as your computer's display.

(Contrast

adjustments are only necessary on older passive-matrix displays.)

To use key combinations on an external keyboard, enable the

External Hot Key

option in the System Setup program and use <Scroll

Lock> instead of <Fn>.

NOTES: You may have difficulty using the display fonts feature with MS-DOS

programs that use downloaded fonts.

For optimum video performance in these cases, do not use expanded video mode.

NOTE: The Dell-installed video drivers are designed to offer the best performance on your computer. Dell recommends that you use

only these drivers with your factory-installed operating system.

Resolution

Colors

Bits

Display Refresh

Rate

External Monitor

Refresh Rate

* In this resolution, the display is set to pan mode. To use 1280 x 1024 resolution, set the external monitor to

Plug and Play Monitor

described in the following procedures.

For Windows 95, perform the following steps:

Click the

Start

,button, point to

Settings

, and then click

Control Panel

Double-click the

Display

icon.

Click the

Settings

tab, click

Advanced Properties

, and click the

Monitor

tab.

Click

Change...

, click

Plug and Play Monitor

, and click

twice.

Set

Display area

1280 x 1024

, and click

For Windows 98, perform the following steps:

Click the

Start

button, point to

Settings

, and then click

Control Panel

Double-click the

Display

icon.

Click the

Settings

tab, click

Advanced...

, and click the

Monitor

tab.

Click

Change...

, click

, and click

Display a list of all the drivers

Click

, and click

Show all hardware

Under

Manufacturers

, click

(Standard monitor types)

Under

Models

, click

Plug & Play Monitor

; and click

Click

again, click

Finish

, and click

At the

Display Properties

screen, set

Screen area

1280 x 1024

, and click

Apply

10.

Click

, click

Yes

, and click

To display more colors, select a lower resolution. If you select a resolution and color combination that the computer does not support, the computer

automatically selects the next supported combination.

Customizing Video Resolution

1. Click the

Start

button, point to

Settings

, and then click

Control Panel

The

Control Panel

window appears.

2. Double-click the

Display

icon.

The

Display Properties

window appears.

3. Click the

Settings

tab, and then set the resolution by dragging the slider in the

Desktop Area

box. In the

Color Palette

box, choose the

number of colors from the menu provided. For more information, see your operating system documentation.

If you choose a resolution or color palette that is higher than is supported, the settings adjust automatically to the closest possible setting.

4. To change the refresh rate, click the

NeoMagic

tab, and then follow the instructions on your display.

640 x 480

256

60 Hz

60 Hz, 75 Hz, 85 Hz

65,536

(64 K)

16 (High Color)

60 Hz

60 Hz, 75 Hz, 85 Hz

1677721

(16 Million)

24 (True Color)

60 Hz

60 Hz, 75 Hz, 85 Hz

800 x 600

256

60 Hz

60 Hz, 75 Hz, 85 Hz

65,536

(64 K)

16 (High Color)

60 Hz

60 Hz, 75 Hz, 85 Hz

1677721

(16 Million)

24 (True Color)

60 Hz

60 Hz, 75 Hz, 85 Hz

1024 x 768

256

60 Hz

60 Hz, 70 Hz, 75 Hz, 85

65,536

(64 K)

16 (High Color)

60 Hz

60 Hz, 70 Hz, 75 Hz, 85

1677721

(16 Million)

24 (True Color)

60 Hz

60 Hz, 70 Hz, 75 Hz, 85

1280 x 1024*

256

60 Hz

NOTE: You can adjust the refresh rate only on an external monitor. If the

NeoMagic

tab is inactive, your external monitor adjusts

the refresh rate automatically.

Dual-Display Mode

With Microsoft

Windows

98 and later operating systems, you can use an external monitor as an extension of your display (see your operating

system documentation for more information). To set up your computer for dual

-display mode, perform the following steps:

1. Connect the

external monitor

2. Click the

Start

button, point to

Settings

, and then click

Control Panel

3. In the

Control Panel

window, double-click the

Display

icon.

4. In the

Display Properties

window, click the

Settings

tab.

5. Change the

Colors

option to

High Color (16 bit)

6. Change the

Desktop Area

1024 by 768 pixels

7. Click

Advanced...

8. Click the

NeoMagic

tab.

9. Select the

Set Dual-Display

checkbox and click

Apply

10. Click

Yes

when prompted to restart your computer.

11. Click the

Start

button, point to

Settings

, and then click

Control Panel

12. Double-click

Display

, and then click the

Settings

tab.

Two display icons appear in the

Settings

window.

13. Click the display icon marked "

14. When asked if you want to enable this monitor, click

Yes

15. Click

Apply

, and then click

If You Have Display Problems

If your computer is receiving power, but nothing appears on your display (such as light, text, or graphics) or the display image does not appear as

you would expect, try the following measures to resolve the problem:

1. If the display is blank, you may be in suspend, standby, or suspend-to-disk mode. Press the power button to resume. If the display is blank

and the power indicator is on, the display may have timed out. In this case, press any key on the keyboard to resume normal operation.

2. If the

low-battery warning

occurs,

connect

the AC adapter to the computer or replace the battery.

3. Adjust the brightness.

4. If your computer is attached to an external monitor, press <Fn><F8> to switch the video image to the display.

Back to Contents Page

NOTE: It takes several seconds to switch the video image.

Back to Contents Page

Drivers: Dell™ Latitude™ CS/CS x Portable Computers User's Guide

Back to Contents Page

Installing Microsoft

Windows

95 and Windows 98 Drivers

Installing Microsoft

Windows NT

Drivers

NOTE: For more information on using the operating system installed on your computer by Dell, see the operating system user's guide

that came with your computer.

Back to Contents Page

Error Messages and Flash Codes: Dell™ Latitude™ CS/CS x Portable Computers User's Guide

Error Messages

Your application programs, operating system, and the computer itself can identify problems and alert you to them. When this occurs, a message

may appear on the computer's display or on an external monitor (if one is attached), or a flash code may be emitted.

If an error message appears on the display or external monitor, make a note of the message. For an explanation of the message and suggestions

for correcting any errors, see

Table 1

. The messages are listed alphabetically.

Table 1. System Error Messages

Error Messages

Memory Allocations

System Flash Codes

I/O Memory Map

Avoiding Interrupt Assignment Conflicts

NOTE: If the message is not listed in Table 1, see the documentation for the application program or the operating system

documentation for an explanation of the message and a recommended action.

Message

Cause

Action

Auxiliary device

failure

The touch pad or external PS/2 mouse

may be faulty.

If you are using an external mouse only, check the connection for a

loose or improperly connected cable. If the problem persists,

enable the

Pointing Device

option. If the problem persists,

call

Dell

for technical assistance.

Bad command or file

name

The command you entered does not

exist or is not in the pathname you

specified.

Make sure that you have typed the command correctly, placed

spaces in the proper location, and used the correct pathname.

Cache disabled due to

failure

The primary cache internal to the

microprocessor has failed.

Call Dell

for technical assistance.

CD-ROM drive

controller failure 1

The CD-ROM drive does not respond to

commands from the computer.

Turn off the computer and detach the CD-ROM drive from the

media bay connector. Reboot the computer. Turn off the computer

again, reattach the CD-ROM drive to the computer, and verify the

media-bay cable connection to the back of the CD-ROM drive.

Reboot the computer. If the problem persists, run the

CD-ROM

Drive

tests in the

Dell Diagnostics

Data error

The diskette or hard-disk drive cannot

read the data.

Run the appropriate utility to check the file structure of the diskette

drive or hard-disk drive. See the documentation that came with

your operating system.

Decreasing available

memory

One or more memory modules may be

faulty or improperly seated.

Reseat the

memory module

in the upgrade socket. If the problem

persists, remove the memory module from the upgrade socket. If

the problem still persists,

call Dell

for technical assistance.

Disk C: failed

initialization

The hard-disk drive failed initialization.

Remove and reseat the

hard-disk drive

, and reboot the computer.

If the problem persists, boot from the

diagnostics diskett

e and run

the

Hard-Disk Drive

tests.

Diskette drive 0 seek

failure

A cable may be loose, or the system

configuration information may not match

the hardware configuration.

Check and reseat the diskette drive cable. If the problem persists,

run the

Diskette Drive

tests in the

Dell Diagnostics

and check the

setting for the appropriate drive (

Diskette Drive A

Diskette

Drive B

) in the

System Setup program

. If the problem cannot be

corrected, call Dell for technical assistance

Diskette read failure

A cable may be loose, or the diskette

may be faulty.

If the diskette-drive access indicator lights up, try a different

diskette.

Diskette subsystem

reset failed

The diskette drive controller may be

faulty.

Run the

Diskette Drive

tests in the

Dell Diagnostics

Diskette write-

protected

Because the diskette is write-protected,

the operation cannot be completed.

Slide the write-protect notch up.

Drive not ready

No diskette is in the diskette drive, or no

hard-disk drive is in the drive bay. The

operation requires a diskette in the drive

Put a diskette in the drive, or push the diskette all the way into the

drive until the eject button pops out. Or, install a hard-disk drive in

the drive bay.

or a hard-disk drive in the bay before it

can continue.

Error reading PCMCIA

card

The computer cannot identify the PC

Card.

Reseat the card or try another PC Card that you know works.

Extended memory size

has changed

The amount of memory recorded in

NVRAM does not match the memory

installed in the computer.

Reboot the computer. If the error appears on the display again,

call Dell

for technical assistance.

Gate A20 failure

An installed memory module may be

loose.

Reseat the

memory module

in the upgrade socket. If the problem

persists, remove the memory module from the upgrade socket. If

the problem still persists,

call Dell

for technical assistance.

General failure

The operating system is unable to carry

out the command.

This message is usually followed by specific information

—

for

example,

Printer out of paper

. Respond by taking the

appropriate action.

Hard-disk drive

configuration error

The computer cannot identify the drive

type.

Turn off the computer, remove the drive, and boot the computer

from a bootable diskette. Then turn off the computer, reinstall the

drive, and reboot the computer. Run the

Hard-Disk Drive

tests in

the

Dell Diagnostics

Hard-disk drive

controller failure 0

The hard-disk drive does not respond to

commands from the computer.

Turn off the computer, remove the drive, and boot the computer

from a bootable diskette. Then turn off the computer again,

reinstall the drive, and reboot the computer. If the problem

persists, try another drive. Then run the

Hard-Disk Drive

tests in

the

Dell Diagnostics

Hard-disk drive

failure

The hard-disk drive does not respond to

commands from the computer.

Turn off the computer, remove the drive, and boot the computer

from a bootable diskette. Then turn off the computer again,

reinstall the drive, and reboot the computer. If the problem

persists, try another drive. Then run the

Hard-Disk Drive

tests in

the

Dell Diagnostics

Hard-disk drive read

failure

The hard-disk drive may be faulty.

Turn off the computer, remove the drive, and boot the computer

from a bootable diskette. Then turn off the computer again,

reinstall the drive, and reboot the computer. If the problem

persists, try another drive. Then run the

Hard-Disk Drive

tests in

the

Dell Diagnostics

Invalid configuration

information-please run

System Setup Program

The system configuration information

does not match the hardware

configuration. This message is most

likely to occur after a memory module is

installed.

Correct the appropriate options in the

System Setup

program.

Keyboard clock line

failure

A cable or connector may be loose, or

the keyboard may be faulty.

Run the

Keyboard Controller

test in the

Dell Diagnostics

Keyboard controller

failure

A cable or connector may be loose, or

the keyboard may be faulty.

Reboot the computer, and avoid touching the keyboard or the

mouse during the boot routine. If the problem persists, run the

Keyboard Controller

test in the

Dell Diagnostics

Keyboard data line

failure

A cable or connector may be loose, or

the keyboard may be faulty.

Run the

Keyboard Controller

test in the

Dell Diagnostics

Keyboard stuck key

failure

If an external keyboard or keypad is

being used, a cable or connector may be

loose or the keyboard may be faulty. If

the integrated keyboard is being used,

the keyboard may be faulty.

A key on the integrated keyboard or

external keyboard may have been

pressed while the computer was booting.

Run the

Stuck Key

test in the

Dell Diagnostics

Memory address line

failure at address,

read value expecting

value

An installed memory module may be

faulty or improperly seated.

Reseat the

memory module

in the upgrade socket. If the problem

persists, remove the memory module from the upgrade socket. If

the problem still persists,

call Dell

for technical assistance.

Memory allocation

error

The software you are attempting to run is

conflicting with the operating system,

another application program, or a utility.

Turn off the computer, wait 30 seconds, and then restart it. Try to

run the program again. If the problem persists, contact the

software company.

Memory data line

failure at address,

read value expecting

value

An installed memory module may be

faulty or improperly seated.

Reseat the

memory module

in the upgrade socket. If the problem

persists, remove the memory module from the upgrade socket. If

the problem still persists,

call Dell

for technical assistance.

Memory double word

logic failure at

address, read value

expecting value

System Flash Codes

When errors that occur during the boot routine cannot be reported on the display or on an external monitor (if attached), the Num Lock, Caps Lock,

and Scroll Lock indicators (see

Figure 1

) may flash together in a pattern of lights (or

flash code

) that identifies the problem. For example, one

flash, followed by a second flash, and then a burst of three flashes (code 1-1-3) means that the computer was unable to read the data in nonvolatile

random-access memory (NVRAM). This information is important to the Dell support staff if you need to call for technical assistance.

The Num Lock, Caps Lock, and Scroll Lock indicators flash briefly when the computer is turned on. The flash codes, if needed, occur after the boot

routine.

Figure 1. Flash Code Indicators

Memory odd/even logic

failure at address,

read value expecting

value

Memory write/read

failure at address,

read value expecting

value

No boot device

available

The computer cannot find the diskette or

hard-disk drive.

If the diskette drive is your

boot device

, make sure that there is a

bootable diskette in the drive. If the hard-disk drive is your boot

device, make sure that the drive is installed, properly seated, and

partitioned as a boot device.

No boot sector on

hard-disk drive

The operating system may be corrupted.

Reinstall your operating system. See the documentation that came

with your operating system.

No timer tick

interrupt

A chip on the system board may be

malfunctioning.

Run the

System Set

tests in the

Dell Diagnostics

Non-system disk or

disk error

The diskette in drive A or your hard-disk

drive does not have a bootable

operating system installed on it.

If you are trying to boot from the diskette, replace it with one that

has a bootable operating system.

Not a boot diskette

There is no operating system on the

diskette.

Boot the computer with a diskette that contains an operating

system.

Optional ROM bad

checksum

The optional ROM apparently failed.

Call Dell

for technical assistance.

Sector not found

The operating system cannot locate a

sector on the diskette or hard-disk drive.

You probably have a bad sector or

corrupted FAT on the diskette or hard-

disk drive.

Run the appropriate utility to check the file structure on the diskette

or hard-disk drive. If a large number of sectors are defective, back

up the data (if possible), and then reformat the diskette or hard-

disk drive.

Seek error

The operating system cannot find a

specific track on the diskette or hard-

disk drive.

If the error is on the diskette drive, try another diskette in the drive.

Shutdown failure

A chip on the system board may be

malfunctioning.

Run the

System Set

tests in the

Dell Diagnostics

Time-of-day clock lost

power

Data stored in NVRAM has become

corrupted.

Connect your computer to an electrical outlet to charge the battery.

If the problem persists, try to restore the data. To restore the data,

press <Fn><F1> to

enter the System Setup program

. Then

immediately exit it. If the message reappears,

call Dell

for

technical assistance.

Time-of-day clock

stopped

The reserve battery that supports the

data stored in NVRAM may be dead.

Connect your computer to an electrical outlet to charge the battery.

If the problem persists,

call Dell

for technical assistance.

Time-of-day not set-

please run the System

Setup program

The time or date stored in the System

Setup program does not match the

system clock.

Correct the settings for the

Date

and

Time

options. (For

instructions, see "

System Setup Program

.")

Timer chip counter 2

failed

A chip on the system board may be

malfunctioning.

Run the

System Set

tests in the

Dell Diagnostics

Unexpected interrupt

in protected mode

The keyboard controller may be

malfunctioning, or an installed memory

module may be loose.

Run the

System Memory

tests and the

Keyboard Controller

test in the

Dell Diagnostics

Warning: Battery is

critically low.

The battery is running out of charge.

Replace the

battery

, or connect the computer to an electrical

outlet. Otherwise, activate

suspend-to-disk

mode or turn off the

computer.

When the computer emits a flash code, write it down on a copy of the

Diagnostics Checklist

and then look up its cause and meaning in

Table 2

. If

you are unable to resolve the problem, use the

Dell Diagnostics

to identify a more serious cause. If you are still unable to resolve the problem,

call

Dell

for technical assistance.

Table 2. Flash Codes and Corrective Actions

Avoiding Interrupt Assignment Conflicts

Problems can arise if two devices attempt to use the same interrupt request (IRQ) line. To avoid this type of conflict, check the documentation for

the default IRQ line setting for each installed device. Then consult

Table 3

to configure the device for one of the available IRQ lines.

Num Lock

Caps Lock

Scroll Lock

Message

Cause

Action

1-1-3

NVRAM write/read failure.

Run the

System Set

tests in the

Dell Diagnostics

. If the program does not

load,

call Dell

for technical assistance.

1-1-4

ROM BIOS checksum failure.

Run the

System Set

tests in the

Dell Diagnostics

. If the program does not

load,

call Dell

for technical assistance.

1-2-1

Programmable interval timer failure.

Run the

System Set

tests in the

Dell Diagnostics

. If the program does not

load,

call Dell

for technical assistance.

1-2-2

DMA initialization failure.

Run the

System Set

tests in the

Dell Diagnostics

. If the program does not

load,

call Dell

for technical assistance.

1-2-3

DMA page register write/read failure.

Run the

System Set

tests in the

Dell Diagnostics

. If the program does not

load,

call Dell

for technical assistance.

1-3-1

through

2-4-4

An installed memory module is not being

properly identified or used.

Make sure that a memory module is installed in one of the memory module

sockets on the system board. The computer will not function unless at least

one memory module is installed.

3-1-1

Slave DMA register failure.

Run the

System Set

tests in the

Dell Diagnostics

. If the program does not

load,

call Dell

for technical assistance.

3-1-2

Master DMA register failure.

Run the

System Set

tests in the

Dell Diagnostics

. If the program does not

load,

call Dell

for technical assistance.

3-1-3

Master interrupt mask register failure.

Call Dell

for technical assistance.

3-1-4

Slave interrupt mask register failure.

Call Dell

for technical assistance.

3-2-4

Keyboard controller test failure.

Run the

Keyboard Controller

test in the

Dell Diagnostics

3-3-4

Display memory test failure.

Run the

Video Memory

test in the

Dell Diagnostics

3-4-1

Display initialization failure.

Run the

Video

tests in the

Dell Diagnostics

3-4-2

Display retrace test failure.

Run the

Video

tests in the

Dell Diagnostics

4-2-1

No timer tick.

Call Dell

for technical assistance.

4-2-2

Shutdown failure.

Call Dell

for technical assistance.

4-2-3

Gate A20 failure.

Call Dell

for technical assistance.

4-2-4

Unexpected interrupt in protected mode.

Call Dell

for technical assistance.

4-3-1

Memory failure above address 0FFFFh.

Run the

System Memory

tests in the

Dell Diagnostics

4-3-3

Timer chip counter 2 failure.

Call Dell

for technical assistance.

4-3-4

Time-of-day clock stopped.

Call Dell

for technical assistance.

4-4-1

Serial port failure.

Run the

Serial/Infrared Ports

tests in the

Dell Diagnostics

5-1-2

No usable memory.

Run the

System Memory

tests in the

Dell Diagnostics

Table 3. IRQ Line Assignments

Memory Allocations

Table 4

provides a map of the conventional memory area. When the microprocessor or a program addresses a location within the conventional

memory range, it is physically addressing a location in main memory.

Table 4. Conventional Memory Map

Table 5

provides a map of the upper memory area. Some of these addresses are dedicated to various system devices, such as the system/video

basic input/output system (BIOS). Others are available for use by expansion cards and/or an expanded memory manager (EMM).

When the microprocessor or a program addresses a location within the upper memory area, it is physically addressing a location within one of

these devices.

Table 5. Upper Memory Map

NOTES: Installed devices cannot share the same COM port address. The default address of your computer's serial port is COM1.

To view IRQ line assignments in the Microsoft

Windows

95 and Windows 98 operating systems, click the

Start

button, point to

Settings

, and click

Control Panel

. Double-click the

System

icon. Select the

Device Manager

tab, and then double-click

Computer

IRQ Line Reserved/Available

IRQ0

Reserved; generated by the system timer

IRQ1

Reserved; generated by the keyboard controller to signal that the keyboard output buffer is full

IRQ2

Reserved; generated internally by the interrupt controller to enable IRQ8 through IRQ15

IRQ3

Available for use by a PC Card unless the integrated serial port or infrared port is configured for COM2 or COM4

IRQ4

Available for use by a PC Card unless the integrated serial port or infrared port is configured for COM1 (the default) or COM3

IRQ5

Available for use by the audio controller

IRQ6

Generated by the diskette drive controller to indicate that the diskette drive requires the attention of the microprocessor

IRQ7

Available for use by a PC Card or audio controller if the parallel port is disabled

IRQ8

Reserved; generated by the system I/O controller's RTC

IRQ9

Reserved

IRQ10

Available for use by a PC Card or audio controller unless the C/Port Family APR or C/Dock Family Expansion Station is attached

IRQ11

Available for use by USB, PC Card, video controller, and audio controller

IRQ12

Reserved; generated by the keyboard controller to indicate that the output buffer of the touch pad or external PS/2 mouse is full

IRQ13

Reserved; generated by the math coprocessor

IRQ14

Reserved; generated by the hard-disk drive to indicate that the drive requires the attention of the microprocessor

IRQ15

Reserved; generated by CD-ROM drive in the external media bay to indicate that the drive requires the attention of the

microprocessor

NOTE: To view memory allocations in Windows 95 and Windows 98, click the

Start

button, point to

Settings

, and click

Control Panel

Double-click the

System

icon. Click the

Device Manager

tab, and then double-click

Computer

Address Range

Use

0000h-003FFh

Interrupt vector table

00400h-004FFh

BIOS data area

00500h-005FFh

MS-DOS

and BASIC work area

00600h-9FBFFh

User memory

Address Range

Use

0009FC00-0009FFFF

PS/2-mouse data area

000A0000-000BFFFF

Video RAM

000C0000-000CBFFF

Video BIOS

000CC000-000CDFFF

PC Card

000F0000-000FFFFF

System BIOS

I/O Memory Map

Table 6

provides a map of memory addresses reserved by the computer for peripheral input/output (I/O) devices. Use the information in Table 6 to

determine if the memory address of an external device (such as a PC Card) conflicts with a memory address reserved by the computer.

Check the documentation of the external I/O device to determine its memory address. If a device's memory address conflicts with a memory

address reserved by the computer, change the address of the device.

Table 6. I/O Memory Map

Back to Contents Page

00100000-03FFFFFF

High memory area

FD000000-FDFFFFFF (approximate; not a fixed location)

Video RAM

FF200000-FF2FFFFF (approximate; not a fixed location)

Video RAM

FFFE0000-FFFFFFFF

BIOS ROM

NOTE: To view I/O addresses in Windows 95 and Windows 98, click the

Start

button,

point to

Settings

, and click

Control Panel

. Double-click the

System

icon. Click the

Device Manager

tab, and then double-click

Computer

Address

Device

0000-001F

DMA controller #1

0020-003F

Interrupt controller #1

0040-005F

System timers

0060-0060

Keyboard controller

0061-0061

System speaker

0064-0064

Keyboard controller

0070-007F

RTC and NMI enable

0080-009F

DMA page registers

00A0-00BF

Interrupt controller #2

00C0-00DF

DMA controller #2

00F0-00FF

Math coprocessor

0170-0177

CD-ROM drive controller

01F0-01F7

Hard-disk drive controller

0210-0217

Audio controller

0220-022F

Audio controller

0270-0277

Fast IR

0376-0376

IDE controller

0378-037F

LPT1

0388-038B

Audio controller

03B0-03BB

VGA

03C0-03DF

VGA

03E0-03E1

PC Card controller

03E8-03EF

Fast IR

03F2-03F5;

03F7-03F7

Diskette controller

03F8-03FF

COM1

0530-0537

Audio controller

0778-077B

ECP registers

ECE0-ECFF

USB controller

FFA0-FFAF

PCI-IDE bus registers

Back to Contents Page

Connecting External Devices: Dell™ Latitude™ CS/CS x Portable Computers User's Guide

About the I/O Connectors

You can connect external devices to the input/output (I/O) connectors. The computer's basic input/output system (BIOS) detects the presence of

external devices when you boot (start) or reboot your computer.

Figure 1

shows the I/O connectors on the back of your computer;

Figure 2

shows

the external media bay and audio connectors on the right side of the computer.

Figure 1. I/O Connectors On the Back of the Computer

Figure 2. I/O Connectors On the Right Side of the Computer

Mouse, Keyboard, and External Numeric Keypad

You can attach a PS/2-compatible device such as a mouse, 101- or 102-key keyboard, or external numeric keypad to the mini-Deutsche Industrie

Norm (DIN) PS/2 connector.

You can also connect these devices to the C/Port Family APR or the C/Dock Family Expansion Station.

About the I/O Connectors

External Monitor

Mouse, Keyboard, and External Numeric Keypad

AC Adapter

USB Devices

Audio Devices

Parallel Devices

External Media Options

Docking Devices

NOTES: Some external devices require you to load software called device drivers into system memory before the devices will work.

These device drivers help your computer recognize the external device and direct its operation. Instructions for installing this software

are usually included in the upgrade kits.

The C/Port Family Advanced Port Replicator (APR) has the same I/O connectors as your computer. In addition, the C/Port APR has a

second Personal System/2 (PS/2) connector, a second Universal Serial Bus (USB) connector, and an Ethernet network connector.

The C/Dock Family Expansion Station has the same I/O connectors as your computer. In addition, the C/Dock Expansion Station has a

second PS/2 connector, a second USB connector, an Ethernet network connector, and a small computer system interface (SCSI)

connector.

PS/2 (mini-DIN) connector

Parallel connector

Video connector

AC adapter connector

Docking connector

USB connector

External media bay connector

Microphone (MIC IN) jack

Speakers and headphones (line-out/speaker-out) jack

Mouse

When you attach a PS/2 mouse to the computer, the touch pad is automatically disabled. If you disconnect the mouse, you must shut down the

computer or enter suspend or standby mode and then resume from it before the touch pad is operational. If you do not do this, the touch pad

resumes operation in standard PS/2 mode, which means that many of the configuration features are disabled.

If you are using a PS/2-compatible mouse that is not made by Microsoft and the mouse does not work properly, reboot the computer. If the mouse

still does not work, install the drivers from the diskette that came with the mouse and reboot the computer.

Keyboard

You can use the computer's keyboard and an external keyboard at the same time. When you attach a keyboard to the computer, the embedded

numeric keypad is automatically disabled.

On an external keyboard, the <Scroll Lock> key acts the same way as the <

Fn> key on the computer’

s keyboard (if the

External Hot Key

option is

enabled in the System Setup program).

External Numeric Keypad

When you attach an external numeric keypad to the computer, the numeric keypad on the computer keyboard is automatically disabled. The

indicators on the integrated keyboard track the operation of an external numeric keypad.

USB Devices

You can attach a USB hub device to the USB connector. The USB hub device can support multiple USB devices (typically low-speed peripherals

such as mice, keyboards, printers, and computer speakers). The C/Port APR Family and the C/Dock Expansion Station Family docking solutions

have two USB connectors.

Parallel Devices

You can attach a parallel device (usually a printer) to the 25-hole parallel connector. You can also connect the diskette drive to the parallel

connector.

The parallel port sends and receives data in parallel format, where eight data bits (one byte) are sent simultaneously over eight separate lines. The

port can be configured as a unidirectional (output-only) port for devices such as a printer or as a bidirectional port for devices such as a network

adapter.

The computer's integrated parallel port is designated as LPT1. The Microsoft

Windows

95 and Windows 98 operating systems automatically

recognize the parallel device and configure it correctly. The parallel port can also be configured for compatibility with the PS/2 standard.

Connecting a Diskette Drive to the Parallel Connector

You can use the the diskette drive as a second external device if you already have a device connected to the media bay connector. The diskette

drive letter is A, unless a diskette drive is already installed in the external media bay, in which case the drive connected to the parallel connector is

NOTE: If the computer is in suspend (or standby) or suspend-to-disk mode when you attach a mouse, you can use the mouse when the

computer resumes normal operation. However, programs that were already running may need to be restarted to recognize the mouse. If

the computer is not in suspend (or standby) or suspend-to-disk mode when you attach the mouse, you must reboot the computer to use

the mouse.

NOTE: If the computer is in suspend (or standby) mode or suspend-to-disk mode when you attach an external keyboard, the device is

recognized immediately by the computer when it resumes normal operation.

NOTE: If the computer is in suspend (or standby) mode or suspend-to-disk mode when you attach an external numeric keypad, the

device is recognized immediately by the computer when it resumes normal operation.

NOTE: If you are using a USB external keyboard, do not enter the System Setup program by using a keyboard command on an

external keyboard. Instead, press <Fn><F1> on the computer's keyboard.