Download Print this page


Dell™ Latitude™ D420 User's Guide
Notes, Notices, and Cautions
A NOTE indicates important information that helps you make better use of your computer.
A NOTICE indicates either potential damage to hardware or loss of data and tells you how to avoid the problem.
A CAUTION indicates a potential for property damage, personal injury, or death.
Abbreviations and Acronyms
For a complete list of abbreviations and acronyms, see Glossary.
If you purchased a Dell™ n Series computer, any references in this document to Microsoft® Windows® operating systems are not applicable.
Information in this document is subject to change without notice.
© 2006 Dell Inc. All rights reserved.
Reproduction in any manner whatsoever without the written permission of Dell Inc. is strictly forbidden.
Trademarks used in this text: Dell, the DELL logo, Inspiron, Dell Precision, Dimension, OptiPlex, Latitude, PowerConnect, PowerEdge, PowerVault, PowerApp, ExpressCharge, Strike Zone, Dell
TravelLite, Undock & Go, XPS, Wi-Fi Catcher, and Dell OpenManage are trademarks of Dell Inc.; Core is a trademark and Intel is a registered trademark of Intel Corporation; Microsoft,
Outlook, and Windows are registered trademarks of Microsoft Corporation; Bluetooth is a registered trademark owned by Bluetooth SIG, Inc. and is used by Dell under license; EMC
is a registered trademark of EMC Corporation; ENERGY STAR is a registered trademark of the U.S. Environmental Protection Agency. As an ENERGY STAR partner, Dell Inc. has
determined that this product meets the ENERGY STAR guidelines for energy efficiency.
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 Inc. disclaims any
proprietary interest in trademarks and trade names other than its own.
Model PP09S
June 2006 P/N PG124 Rev. A01
Dell™ QuickSet


   Summary of Contents for Dell Latitude D420

  • Page 1

    Trademarks used in this text: Dell, the DELL logo, Inspiron, Dell Precision, Dimension, OptiPlex, Latitude, PowerConnect, PowerEdge, PowerVault, PowerApp, ExpressCharge, Strike Zone, Dell TravelLite, Undock & Go, XPS, Wi-Fi Catcher, and Dell OpenManage are trademarks of Dell Inc.; Core is a trademark and Intel is a registered trademark of Intel Corporation; Microsoft, Outlook, and Windows are registered trademarks of Microsoft Corporation;...

  • Page 2: About Your Computer, Front View

    Back to Contents Page   About Your Computer Dell™ Latitude™ D420 User's Guide   Front View   Left View   Right View   Back View   Bottom View  Front View 1 display latch 5 touch pad buttons keyboard and network status lights 2 display 6 track stick 10 ambient light sensor...

  • Page 3

    The keyboard includes a numeric keypad as well as the Windows logo key. For information on supported keyboard shortcuts, see Combinations.   fingerprint reader (optional) — Helps to keep your Dell™ computer secure. When you slide your finger over the reader, it uses your unique fingerprint to authenticate your user identity.   touch pad — Provides the functionality of a mouse. See Touch Pad for more information.

  • Page 4: Left View, Right View

    NOTICE: To avoid losing data, turn off your computer by performing a Microsoft® Windows® operating system shutdown rather than by pressing the power button. If the computer stops responding, press and hold the power button until the computer turns off completely (which may take several seconds).  Left View 1 security cable slot headphone connector...

  • Page 5: Back View

    air vent WiFi Locator - Wireless On/Off switch power button   power button — Press the power button to turn on the computer or exit a power management mode (see Power Management Modes).  Back View 1 network connector (RJ-45) 4 video connector 7 IEEE 1394 connector 2 modem connector (RJ-11) 5 powered USB connector...

  • Page 6: Bottom View

    IEEE 1394 Connector — Connects devices supporting IEEE 1394 high-speed transfer rates, such as some digital video cameras. NOTE: The D420 has been optimally designed to be used with the slim Media Base for docking. However, it is compatible with the D-Family D/Port and D/Dock.

  • Page 7

    NOTICE: Your computer features Dell Undock & Go™ technology that allows you to undock your computer without going into standby mode. Because  the computer may not automatically go into standby mode when it is undocked, be sure the settings in the Power Options control panel do not prohibit the computer from going into standby mode. If you change the Power Options control panel to prohibit the computer from going into standby mode, you greatly increase the chances of causing your battery to wear down quickly or causing your computer to overheat.

  • Page 8: Cleaning Your Computer, Floppy Drive, Cds And Dvds

    Back to Contents Page   Appendix Dell™ Latitude™ D420 User's Guide   Cleaning Your Computer   Macrovision Product Notice   FCC Notice (U.S. Only)  Cleaning Your Computer CAUTION: Before you begin any of the procedures in this section, follow the safety instructions in the Product Information Guide.

  • Page 9: Macrovision Product Notice

    2. This device must accept any interference received, including interference that may cause undesired operation. NOTICE: The FCC regulations provide that changes or modifications not expressly approved by Dell Inc. could void your authority to operate this equipment. These limits are designed to provide reasonable protection against harmful interference in a residential installation. However, there is no guarantee that interference will not occur in a particular installation.

  • Page 10: Using A Battery, Battery Performance, Checking The Battery Charge

    Using an incompatible battery may increase the risk of fire or explosion. Replace the battery only with a compatible battery purchased from Dell. The lithium ion battery is designed to work with your Dell computer. Do not use a battery from another computer with your computer.

  • Page 11: Charge Gauge, Check The Battery Charge, Conserving Battery Power, Power Management Modes, Standby Mode

    You can check battery health in one of two ways: by using the charge gauge on the battery as described below and by using the Battery Meter in Dell QuickSet. For information about QuickSet, right-click the icon in the taskbar, and click Help.

  • Page 12: Hibernate Mode, Configuring Power Management Settings, Charging The Battery, Replacing The Battery

     Charging the Battery NOTE: With Dell™ ExpressCharge™, when the computer is turned off, the AC adapter charges a completely discharged battery to 80 percent in about 1  hour and to 100 percent in approximately 2 hours. Charge time is longer with the computer turned on. You can leave the battery in the computer for as long as you like. The battery's internal circuitry prevents the battery from overcharging.

  • Page 13: Storing A Battery

    CAUTION: Using an incompatible battery may increase the risk of fire or explosion. Replace the battery only with a compatible battery purchased from Dell. The battery is designed to work with your Dell™ computer. Do not use a battery from other computers with your computer.  NOTICE: You must remove all external cables from the computer to avoid possible connector damage. To remove the battery:  ...

  • Page 14: Using Cards, Card Types, Card Blanks, Extended Cards

    Back to Contents Page   Using Cards Dell™ Latitude™ D420 User's Guide   Card Types   Card Blanks   Extended Cards   Installing a PC Card or 34-mm ExpressCard   Installing a Smart Card or Secure Digital (SD) Card   Removing a PC Card, 34-mm Express Card, or Blank  Card Types This computer supports the following card types: PC Cards, 34-mm ExpressCard (with adapter), SmartCards, and Secure Digital (SD) card types.

  • Page 15: Installing A Pc Card

    Installing a PC Card To install a PC Card:   1. Hold the card with its orientation symbol pointing into the slot and the top side of the card facing up. The latch may need to be in the "in" position before you insert the card.

  • Page 16

    1. Hold the card so that the gold contact pad is facing upward and pointing toward the smart card slot. gold contact pad smart card (top)   2. Slide the smart card into the smart card slot until the card is completely seated in its connector. The smart card will protrude approximately 1/2 inch from the slot.

  • Page 17

    Press the latch and remove the card or blank. For some latches, you must press the latch twice: once to pop the latch out, and then a second time to pop the card out. Back to Contents Page  ...

  • Page 18: Using The Display, Adjusting Brightness, Switching The Video Image, Setting Display Resolution And Refresh Rate

    NOTE: Use only the Dell-installed video drivers, which are designed to offer the best performance with your Dell- installed operating system. If you choose a resolution or color palette that is greater than that which the display supports, the settings adjust automatically to the closest supported values.

  • Page 19: Swapping Primary And Secondary Displays

    2. Click Start® Control Panel® Display® Settings. NOTE: If you choose a resolution or color palette that is greater than that which the display supports, the settings adjust automatically to the closest supported values. For more information, see your operating system documentation.  ...

  • Page 20: Finding Information

     End User License Agreement  How to remove and replace parts   Dell™ Latitude™ User's Guide  Specifications  How to configure system settings Microsoft Windows XP Help and Support Center  How to troubleshoot and solve problems 1.  Click Start® Help and Support® Dell User and System Guides® System...

  • Page 21

    The Dell Support Utility is an automated upgrade and notification system installed on your computer. This support provides real-time health scans of your computing environment, software updates, and relevant self-support information. Access the Dell Support Utility from the icon in the taskbar.

  • Page 22

    For more information on Dell QuickSet, see Dell™ QuickSet.  How to reinstall my operating system   Operating System CD   NOTE: The Operating System CD may be optional and may not ship with your computer. The operating system is already installed on your computer. To reinstall your operating system, use the Operating System CD.

  • Page 23

    Back to Contents Page   Glossary Dell™ Latitude™ D420 User's Guide Terms in this Glossary are provided for informational purposes only and may or may not describe features included with your particular computer.  A AC — alternating current — The form of electricity that powers your computer when you plug the AC adapter power cable in to an electrical outlet.

  • Page 24

    carnet — An international customs document that facilitates temporary imports into foreign countries. Also known as a merchandise passport. CD — compact disc — An optical form of storage media, typically used for audio and software programs. CD drive — A drive that uses optical technology to read data from CDs. CD player —...

  • Page 25

    ExpressCard — A removable I/O card adhering to the PCMCIA standard. Modems and network adapters are common types of ExpressCards. ExpressCards support both the PCI Express and USB 2.0 standard. Express Service Code — A numeric code located on a sticker on your Dell™ computer. Use the Express Service Code when contacting Dell for assistance.  Express Service Code service may not be available in some countries.

  • Page 26

    heat sink — A metal plate on some processors that helps dissipate heat. help file — A file that contains descriptive or instructional information about a product. Some help files are associated with a particular program, such as Help in Microsoft Word.

  • Page 27

    MB/sec — megabytes per second — One million bytes per second. This measurement is typically used for data transfer ratings. memory — A temporary data storage area inside your computer. Because the data in memory is not permanent, it is recommended that you frequently save your files while you are working on them, and always save your files before you shut down the computer.

  • Page 28

    — An I/O port often used to connect devices such as a handheld digital device or digital camera to your computer. Service Tag — A bar code label on your computer that identifies your computer when you access Dell Support at or when you call Dell for customer service or technical support.

  • Page 29

    Surge protectors do not protect against lightning strikes or against brownouts, which occur when the voltage drops more than 20 percent below the normal AC-line voltage level. Network connections cannot be protected by surge protectors. Always disconnect the network cable from the network connector during electrical storms. SIM —...

  • Page 30

     W W — watt — The measurement of electrical power. One W is 1 ampere of current flowing at 1 volt. WHr — watt-hour — A unit of measure commonly used to indicate the approximate capacity of a battery. For example, a 66-WHr battery can supply 66 W of power for 1 hour or 33 W for 2 hours.

  • Page 31: Getting Help, Obtaining Assistance, Online Services

    Dell's Express Service Code system may not be available in all countries. When prompted by Dell's automated telephone system, enter your Express Service Code to route the call directly to the proper support personnel. If you do not have an Express Service Code, open the Dell Accessories folder, double-click the Express Service Code icon, and follow the directions.

  • Page 32: Autotech Service, Support Service, Problems With Your Order, Product Information

     Product Information If you need information about additional products available from Dell, or if you would like to place an order, visit the Dell website at For the telephone number to call to speak to a sales specialist, see the contact numbers for your region.

  • Page 33: Before You Call, Contacting Dell

    NOTE: In certain countries, support specific to Dell™ XPS™ computers is available at a separate telephone number listed for participating countries. If  you do not see a telephone number listed that is specific for XPS computers, you may contact Dell through the support number listed and your call will be routed appropriately. When you need to contact Dell, use the electronic addresses, telephone numbers, and codes provided in the following table. If you need assistance in determining which codes to use, contact a local or an international operator.

  • Page 34

    International Access Code: Home/Small Business Customer Care 0820 240 530 14 Preferred Accounts/Corporate Customer Care 0820 240 530 16 Country Code: 43 Support for XPS 0820 240 530 81 City Code: 1 Home/Small Business Support for all other Dell computers 0820 240 530 17 Preferred Accounts/Corporate Support 0660 8779 Switchboard 0820 240 530 00 Bahamas General Support toll-free: 1-866-278-6818...

  • Page 35

    Country Code: 420 Technical Fax 22537 2728 Switchboard 22537 2711 Website:     Technical Support for XPS 7010 0074 Technical Support for all other Dell computers 7023 0182 Denmark (Copenhagen) Customer Care (Relational) 7023 0184 International Access Code: 00 Home/Small Business Customer Care 3287 5505 Switchboard (Relational) 3287 1200...

  • Page 36

    01 55 94 71 01 Website:   E-mail:   Technical Support for XPS 069 9792 7222 Germany (Langen) Technical Support for all other Dell computers 069 9792-7200 International Access Code: 00 Home/Small Business Customer Care 0180-5-224400 Global Segment Customer Care 06103 766-9570 Country Code: 49 Preferred Accounts Customer Care 06103 766-9420...

  • Page 37

    0120-198-226 Technical Support outside of Japan (Dimension and Inspiron) 81-44-520-1435 Technical Support (Dell Precision, OptiPlex, and Latitude) toll-free:0120-198-433 Technical Support outside of Japan (Dell Precision, OptiPlex, and Latitude) 81-44-556-3894 Japan (Kawasaki) Technical Support (PDAs, projectors, printers, routers) toll-free: 0120-981-690...

  • Page 38

    Transaction Sales (Xiamen, China) 29 693 115 Website:   Malaysia (Penang) Technical Support (Dell Precision, OptiPlex, and Latitude) toll-free: 1 800 880 193 Technical Support (Dimension, Inspiron, and Electronics and Accessories) toll-free: 1 800 881 306 International Access Code: 00 Technical Support (PowerApp, PowerEdge, PowerConnect, and PowerVault) toll-free: 1800 881 386...

  • Page 39

    Technical Support Fax 08 590 05 594 Sales 08 590 05 185 Website:    E-mail:    Switzerland (Geneva) Technical Support for XPS 0848 33 88 57 Technical Support (Home and Small Business) for all other Dell products 0844 811 411 International Access Code: 00 Technical Support (Corporate) 0844 822 844...

  • Page 40

    0870 907 4006 Uruguay General Support toll-free: 000-413-598-2521 Automated Order-Status Service toll-free: 1-800-433-9014 AutoTech (portable and desktop computers) toll-free: 1-800-247-9362 toll-free: 1-877-459-7298 Hardware and Warranty Support (Dell TV, Printers, and Projectors) for Relationship customers   Americas Consumer XPS Support toll-free: 1-800-232-8544 Consumer (Home and Home Office)  Support for all other Dell products toll-free: 1-800-624-9896 Customer Service toll-free: 1-800-624-9897 Employee Purchase Program (EPP) Customers toll-free: 1-800-695-8133...

  • Page 41

    Software and Peripherals Sales toll-free: 1-800-671-3355 Spare Parts Sales toll-free: 1-800-357-3355 Extended Service and Warranty Sales toll-free: 1-800-247-4618 toll-free: 1-800-727-8320 toll-free: 1-877-DELLTTY Dell Services for the Deaf, Hard-of-Hearing, or Speech-Impaired (1-877-335-5889) U.S. Virgin Islands General Support 1-877-673-3355 Venezuela General Support 8001-3605 Back to Contents Page...

  • Page 42: Using The Keyboard And Touch Pad, Numeric Keypad, Key Combinations, System Functions, Display Functions

     Key Combinations   System Functions <Ctrl><Shift><Esc> Opens the Task Manager window   Battery <Fn><F3> Displays the Dell™ QuickSet Battery Meter   Display Functions <Fn><F8> Switches the video image to the next display option. The options include the integrated display, an external monitor, and both displays simultaneously.

  • Page 43: Speaker Functions, Power Management

    <Fn><Esc> Activates a power management mode. You can reprogram this keyboard shortcut to activate a different power management mode using the Advanced tab in the Power Options Properties window (see Configuring Power Management Settings). <Fn><F1> Puts the computer into hibernate mode. Dell QuickSet is required (see Dell™ QuickSet).   Microsoft® Windows® Logo Key Functions Windows logo key and <m> Minimizes all open windows.

  • Page 44: Customizing The Touch Pad And Track Stick

     Changing the Track-Stick Cap You can replace your track-stick cap if it wears down from prolonged use or if you prefer a different color. You can purchase additional track-stick caps by visiting the Dell website at   1. Pull the cap off the track-stick post.

  • Page 46: Setting Up A Network, Physically Connecting To A Network Or Broadband Modem, Network Setup Wizard

    Back to Contents Page   Setting Up a Network Dell™ Latitude™ D420 User's Guide   Physically Connecting to a Network or Broadband Modem   Network Setup Wizard   Wireless Local Area Network (WLAN)   Mobile Broadband or Wireless Wide Area Network (WWAN)   Dell™ Wi-Fi Catcher™ Network Locator    Internet Connection Firewall  Physically Connecting to a Network or Broadband Modem Before you connect your computer to a network that is not wireless, the computer must have a network adapter installed and a network cable connected to it.

  • Page 47: What You Need To Establish A Wlan Connection, Checking Your Wireless Network Card

    access point or wireless router and the wireless network card in the computer communicate by broadcasting data from their antennas over the airwaves.   What You Need to Establish a WLAN Connection Before you can set up a WLAN, you need:  High-speed (broadband) Internet access (such as cable or DSL)  A broadband modem that is connected and working  A wireless router or access point...

  • Page 48: Connecting To A Wireless Local Area Network, Determining The Wireless Network Device Manager

    If the software is removed or corrupted, follow the instructions in the user documentation for your wireless network card. Verify the type of wireless network card installed in your computer and then search for that name on the Dell Support website at For information on the...

  • Page 49: What You Need To Establish A Mobile Broadband Network Connection

    Thereafter, whenever you log on to your computer within the range of the wireless network that you selected, the same pop-up notifies you of the wireless network connection. NOTE: If you select a secure network, you must enter a WEP or WPA key when prompted. Network security settings are unique to your network. Dell cannot provide this information. NOTE: Your computer can take up to 1 minute to connect to the network.

  • Page 50: Internet Connection Firewall

    WiFi network connections. Because the Wi-Fi Catcher Network Locator is disabled and not configured for use when your computer is shipped to you, you must first use Dell QuickSet to enable and configure the switch to control WiFi network connections.

  • Page 51: Adding And Replacing Parts, Recommended Tools, Turning Off Your Computer, Before Working Inside Your Computer

    Hold a component such as a processor by its edges, not by its pins. NOTICE: Damage due to servicing that is not authorized by Dell is not covered by your warranty. NOTICE: When you disconnect a cable, pull on its connector or on its pull-tab, not on the cable itself. Some cables have a connector with locking tabs; if you are disconnecting this type of cable, press in on the locking tabs before you disconnect the cable.

  • Page 52: Hard Drive, Removing The Hard Drive

    Hard drives are extremely fragile; even a slight bump can damage the drive. NOTE: Dell does not guarantee compatibility or provide support for hard drives from sources other than Dell.  NOTE: If you are installing a hard drive from a source other than Dell, you need to install an operating system (see Restoring Your Operating System) and drivers (see Drivers) on the new hard drive.

  • Page 53

    The replacement hard drive ships with the protective cover and the hard drive cable. Only a certified service technician should dismantle the hard drive. Damage due to servicing that is not authorized by Dell is not covered by your warranty.

  • Page 54: Replacing The Hard Drive, Hinge Cover

    ZIF connector hard drive cable  Replacing the Hard Drive NOTICE: Use firm and even pressure to slide the drive into place. If you use excessive force, you may damage the connector.   1. Follow the steps in Removing the Hard Drive in reverse order.

  • Page 55

      4. Ease the hinge cover up, moving from right to left, and remove it.   5. To replace the hinge cover, insert the left edge of the cover into the hinge cover slot, and press from left to right until the cover snaps into place.  Keyboard CAUTION: Before you begin any of the procedures in this section, follow the safety instructions in the Product Information Guide.

  • Page 56

    NOTE: Memory modules purchased from Dell are covered under your computer warranty. CAUTION: Before you begin any of the procedures in this section, follow the safety instructions in the Product Information Guide. NOTICE: To prevent damage to the system board, remove the main battery before you service the computer.

  • Page 57

    6. Replace the memory/mini-card module cover and tighten the three captive screws.   7. Insert the battery into the battery bay, or connect the AC adapter to your computer and an electrical outlet.   8. Turn on the computer. As the computer boots, it detects the additional memory and automatically updates the system configuration information. To confirm the amount of memory installed in the computer, click Start, click Help and Support, and then click Computer Information.

  • Page 58

    metal securing clips (2) WLAN card NOTICE: The connectors are keyed to ensure correct insertion. If you feel resistance, check the connectors and realign the card. NOTE: Do not insert a Mobile Broadband (WWAN) network card into the WLAN card connector.  ...

  • Page 59

    1 Mobile Broadband card 2 antenna wires (2) a.  Disconnect the Mobile Broadband card from any attached cables. 1 Mobile Broadband card 2 metal securing tabs (2) NOTICE: To prevent damage to the connector, do not use tools to spread the securing clips. b.

  • Page 60

    1 system board connector 2 Mobile Broadband card NOTE: For more specific information about which cable to connect to which connector, see the documentation that came with your Mobile Broadband card. c.  Connect the white antenna cable with the black stripe to the connector on the card marked with a white triangle; connect the black antenna cable with the white stripe to the connector on the card marked with a black triangle.

  • Page 61

    1 metal tabs (2) on SIM card slot 2 SIM card with cut-off corner NOTE: When you replace the SIM card, ensure that you slide the SIM card under the two metal tabs on the SIM card slot with the cut-off corner of the card facing toward the back of the computer.

  • Page 62

    cable connector coin-cell battery When you replace the battery, insert it at a 30-degree angle under the clip with the positive (identified by a plus [+] symbol) side up, and then push it into place. Back to Contents Page  ...

  • Page 63

     Network connectivity  Power management  Display  System information Depending on what you want to do in Dell™ QuickSet, you can start it by either clicking, double-clicking, or right-clicking the QuickSet icon, , in the Microsoft® Windows® taskbar. The taskbar is located in the lower-right corner of your screen. For more information about QuickSet, right-click the QuickSet icon and select Help.

  • Page 64: Securing Your Computer, Security Cable Lock, Using Smart Cards, About Smart Cards

    Back to Contents Page   Securing Your Computer Dell™ Latitude™ D420 User's Guide   Security Cable Lock   Using Smart Cards   Passwords   Trusted Platform Module (TPM)   Security Management Software   Computer Tracking Software   If Your Computer Is Lost or Stolen NOTE: For information on how to secure your computer while traveling, see Traveling With Your Computer.

  • Page 65: Using An Administrator Password, Using A Hard Drive Password

    Passwords provide a high level of security for data in your computer or hard drive. However, they are not foolproof. If you require more security, obtain and use additional forms of protection, such as smart cards, data encryption programs, or PC Cards with encryption features. If you forget any of your passwords, contact your system administrator or contact Dell (see Contacting Dell).

  • Page 66: Enabling The Tpm Feature, Security Management Software, Activating The Security Management Software

    To secure your TPM data and encryption keys, follow the backup procedures documented in the Broadcom Secure Foundation Getting Started Guide. In the event of these backups being incomplete, lost, or damaged, Dell will be unable to assist in the recovery of encrypted data.

  • Page 67: Computer Tracking Software, If Your Computer Is Lost Or Stolen

    If possible, give the name of the investigating officer. The Dell customer service representative will log your report under the computer Service Tag and record the computer as missing or stolen. If someone calls Dell for technical assistance and gives your Service Tag, the computer is identified automatically as missing or stolen.

  • Page 68: System Setup Program, Viewing The System Setup Screens, System Setup Screens, Commonly Used Settings

     System security and hard-drive password settings NOTICE: Unless you are an expert computer user or are directed to do so by Dell technical support, do not change the system setup settings. Certain changes might make your computer work incorrectly.  Viewing the System Setup Screens  ...

  • Page 69: Changing Com Ports, Enabling The Infrared Sensor

    Boot sequence changes take effect as soon as you save the changes and exit the system setup program.   Performing a One-Time Boot You can set a one-time-only boot sequence without entering the system setup program. (You can also use this procedure to boot the Dell Diagnostics on the diagnostics utility partition on your hard drive.)  ...

  • Page 71: Reinstalling Software, What Is A Driver, Identifying Drivers, Reinstalling Drivers And Utilities

    A driver acts like a translator between the device and any other programs that use the device. Each device has its own set of specialized commands that only its driver recognizes. Dell ships your computer to you with required drivers already installed—no further installation or configuration is needed. NOTICE: The optional Drivers and Utilities CD may contain drivers for operating systems that are not on your computer.

  • Page 72: Using The Drivers And Utilities Cd, Manually Reinstalling Drivers

    Using the Drivers and Utilities CD NOTE: The Drivers and Utilities CD may be optional and may not ship with your computer. If using Device Driver Rollback or System Restore does not resolve the problem, then reinstall the driver from the Drivers and Utilities CD (also known as the ResourceCD).

  • Page 73: Restoring Your Operating System, Using Microsoft Windows Xp System Restore, Creating A Restore Point

    Windows Help and Support Center. NOTICE: Make regular backups of your data files. System Restore does not monitor your data files or recover them. NOTE: The procedures in this document were written for the Windows default view, so they may not apply if you set your Dell™ computer to the  Windows Classic view.   Creating a Restore Point   1. Click Start® Help and Support.

  • Page 74: Using The Operating System Cd, Reinstalling Windows Xp

    The optional Operating System CD provides options for reinstalling Windows XP. The options can overwrite files and possibly affect programs installed on your hard drive. Therefore, do not reinstall Windows XP unless a Dell technical support representative instructs you to do so.

  • Page 75: Specifications

    Back to Contents Page   Specifications Dell™ Latitude™ D420 User's Guide   Processor  Processor type Intel® Yonah L1 cache 32 KB (internal) L2 cache 2 MB External bus frequency   System Information  System chipset Intel 945GMS Data bus width 64 bits DRAM bus width 64 bits...

  • Page 76

    224 MB of shared memory (with 512 MB or more of system memory) LCD interface LVDS TV support NTSC or PAL in S-video and composite modes (through Dell D/Port advanced port replicator only)   Audio  Audio type High Definition Audio (HDA) Audio controller...

  • Page 77

      Fingerprint Reader (optional) Type UPEK TCS3 TouchStrip™ strip sensor with CMOS active capacitive pixel-sensing technology Power Supply 2.7 V to approx. 3.6 V Connector 48-ball BGA Array Size 248 x 2 pixels Type UPEK TCS3 TouchStrip™ strip sensor with CMOS  active capacitive pixel-sensing technology   Touch Pad  X/Y position resolution (graphics table mode) 240 cpi Size:  ...

  • Page 78

    Width 60.9 mm (2.39 inches) Depth 153.42 mm (6.04 inches) Weight (with cables) 0.46 kg (1.01 lb) Temperature range:   Operating 0° to 35°C (32° to 95°F)  Storage –40° to 60°C (–40° to 140°F)   Physical  Height 2.5 cm (1.0 inches) Width 29.5 cm (11.6 inches) Depth 20.98 cm (8.26 inches) Weight approximately 1.36 kg (3.0 lb), with a 12.1-inch WXGA display and 4-cell battery;...

  • Page 79

    Trademarks used in this text: Dell, the DELL logo, Inspiron, Dell Precision, Dimension, OptiPlex, Latitude, PowerConnect, PowerEdge, PowerVault, PowerApp, ExpressCharge, Strike Zone, Dell TravelLite, Undock & Go, XPS, Wi-Fi Catcher, and Dell OpenManage are trademarks of Dell Inc.; Core is a trademark and Intel is a registered trademark of Intel Corporation; Microsoft, Outlook, and Windows are registered trademarks of Microsoft Corporation;...

  • Page 80: Transferring Information To A New Computer

    This procedure requires the Operating System CD. This CD is optional and may not be included with all computers. NOTE: The following procedure requires the use of the Latitude D420 Media Base for access to a CD/DVD drive. To prepare the new computer for the file transfer:  ...

  • Page 81: Running The Files And Settings Transfer Wizard Without The Operating System Cd

    NOTE: The following procedure requires the use of the Latitude D420 Media Base for access to a CD/DVD drive. To run the Files and Settings Transfer Wizard without the Operating System CD, you must create a wizard disk that will allow you to create a backup image file to removable media.

  • Page 82

    NOTE: For more information about this procedure, search for document #PA1089586 (How Do I Transfer Files From My Old Computer to My New Dell Computer Using the Microsoft® Windows® XP Operating System?). NOTE: Access to the Dell™ Knowledge Base document may not be available in some countries.  Back to Contents Page  ...

  • Page 83: Traveling With Your Computer, Identifying Your Computer, Packing The Computer, Travel Tips, Traveling By Air

     Write down your Service Tag and store it in a safe place away from the computer or carrying case. Use the Service Tag if you need to report a loss or theft to law enforcement officials and to Dell.  Create a file on the Microsoft® Windows® desktop called if_found. Place information such as your name, address, and phone number in this file.

  • Page 84

    Back to Contents Page  ...

  • Page 85: Troubleshooting, Dell Technical Update Service, Dell Diagnostics, When To Use The Dell Diagnostics

        Dell Technical Update Service The Dell Technical Update service provides proactive e-mail notification of software and hardware updates for your computer. The service is free and can be customized for content, format, and how frequently you receive notifications. To enroll for the Dell Technical Update service, go to

  • Page 86: Starting The Dell Diagnostics From The Optional Drivers And Utilities Cd, Dell Diagnostics Main Menu

    Contacting Dell). NOTE: The Service Tag for your computer is located at the top of each test screen. If you contact Dell, technical support will ask for your Service Tag.   3. If you run a test from the Custom Test or Symptom Tree option, click the applicable tab described in the following table for more information.

  • Page 87: Dell Support Utility, Accessing The Dell Support Utility, Clicking The Dell Support Icon, Drive Problems

    4. When the tests are completed, if you are running the Dell Diagnostics from the Drivers and Utilities CD, remove the CD.   5. When the tests are complete, close the test screen to return to the Main Menu screen. To exit the Dell Diagnostics and restart the computer, close the Main Menu screen.

  • Page 88: Cd And Dvd Drive Problems, If You Hear An Unfamiliar Scraping Or Grinding Sound

    Check the cable connections   Check for hardware incompatibilities — Software and Hardware Incompatibilities.   Run the Dell Diagnostics — Dell Diagnostics.   CD and DVD drive problems NOTE: High-speed CD or DVD drive vibration is normal and may cause noise, which does not indicate a defect in the drive or the CD or DVD.

  • Page 89: Error Messages

    Internet, your computer might be infected with spyware. Use an anti-virus program that includes anti-spyware protection (your program may require an upgrade) to scan the computer and remove spyware. For more information, go to and search for the keyword spyware.

  • Page 90

    The computer cannot identify the drive type. Shut down the computer, remove the hard drive (see Hard Drive), and boot the computer from a CD. Then shut down the computer, reinstall the hard drive, and restart the computer. Run the Hard-Disk Drive tests in the Dell Diagnostics (see Dell Diagnostics).

  • Page 91

    Contacting Dell).   No timer tick interrupt — A chip on the system board may be malfunctioning. Run the System Set tests in the Dell Diagnostics (see Dell Diagnostics).   Not enough memory or resources. Exit some programs and try again —...

  • Page 92: Ieee 1394 Device Problems, Keyboard Problems, External Keyboard Problems

    System configuration settings are corrupted. Connect your computer to an electrical outlet to charge the battery. If the problem persists, try to restore the data by entering the system setup program. Then immediately exit the program. If the message reappears, contact Dell...

  • Page 93: Unexpected Characters, Lockups And Software Problems, The Computer Does Not Start Up

    4.  From the Windows desktop, click Start® All Programs® Accessories® Notepad. 5.  Type some characters on the internal keyboard and verify that they appear on the display. If the characters appear now but did not with the external keyboard, you may have a defective external keyboard. Contact Dell (see Contacting Dell).

  • Page 94: A Solid Blue Screen Appears, Other Software Problems, Memory Problems, Network Problems

    Internet, your computer might be infected with spyware. Use an anti-virus program that includes anti-spyware protection (your program may require an upgrade) to scan the computer and remove spyware. For more information, go to and search for the keyword spyware.

  • Page 95: Mobile Broadband Network, Pc Card Or Expresscard Problems

    ExpressCard is enabled.  Searching – The Dell Mobile Broadband Card Utility has not yet located a Mobile Broadband network. If the searching state persists, ensure that the signal strength is adequate.  No service – The Dell Mobile Broadband Card Utility did not locate a Mobile Broadband network. Ensure that the signal strength is adequate. Restart the Dell wireless utility or contact your Mobile Broadband network provider.

  • Page 96: Power Problems, Ensuring Sufficient Power For Your Computer, Docking Power Considerations

    Using less-powerful AC adapters will cause you to receive a WARNING message.   Docking Power Considerations Your computer supports use of a Dell D/Port advanced port replicator. Due to the extra power consumption when a computer is docked to a docking device,...

  • Page 97: Printer Problems, Scanner Problems

      Docking While the Computer Is Running If your computer is connected to the Dell D/Port while the computer is running, presence of the docking device is ignored until the AC adapter is connected to the computer.  ...

  • Page 98: Sound And Speaker Problems, No Sound From Integrated Speakers, No Sound From External Speakers

    Reinstall the audio driver — Reinstalling Drivers and Utilities.   Run the Dell Diagnostics — Dell Diagnostics. NOTE: The volume control in some MP3 players overrides the Windows volume setting. If you have been listening to MP3 songs, ensure that you did not turn the player volume down or off.

  • Page 99: Video And Display Problems, If The Display Is Blank

    Test the mouse controller — To test the mouse controller (which affects pointer movement) and the operation of the touch pad or mouse buttons, run the Mouse test in the Pointing Devices test group in the Dell Diagnostics (see Dell Diagnostics).

  • Page 100: If Only Part Of The Display Is Readable

    1.  Shut down your computer and connect an external monitor to the computer. 2.  Turn on the computer and the monitor and adjust the monitor brightness and contrast controls. If the external monitor works, the computer display or video controller may be defective. Contact Dell (see Contacting Dell).

Comments to this Manuals

Symbols: 0
Latest comments: