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Dell GX280DT - GX280 Desktop Computer User Manual

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Table of Contents
Dell™ OptiPlex™ GX280 Systems User's Guide
 
 
 Small Form-Factor Computer
 Small Desktop Computer
 Desktop Computer
 Small Mini-Tower Computer
 Mini-Tower Computer

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Table of Contents
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  Summary of Contents for Dell GX280DT - GX280 Desktop Computer

  • Page 1 Dell™ OptiPlex™ GX280 Systems User's Guide    Small Form-Factor Computer  Small Desktop Computer  Desktop Computer  Small Mini-Tower Computer  Mini-Tower Computer  ...
  • Page 2: Advanced Features

    The system battery has reached a voltage of 2.2V or lower. Battery Low For more information about Dell's ASF implementation, see the ASF User's Guide and the ASF Administrator's Guide, which are available on the Dell Support website at support.dell.com.
  • Page 3: Chassis Intrusion Detection

     Security   Chassis Intrusion Detection NOTE: When the admin password is enabled, you must know the admin password before you can reset the Chassis Intrusion setting. This feature, if installed and enabled, detects that the chassis was opened and alerts the user. To change the Chassis Intrusion setting:  ...
  • Page 4: Option Settings

      Option Settings You cannot change or enter a new system password if either of the following two options is displayed:  Set — A system password is assigned.  Disabled — The system password is disabled by a jumper setting on the system board. You can only assign a system password when the following option is displayed:  Not Set —...
  • Page 5: Deleting Or Changing An Existing System Password

    NOTE: You can use Password Status in conjunction with System Password and Admin Password to further protect your computer from unauthorized changes.   Deleting or Changing an Existing System Password   Enter system setup and verify that Password Status is set to Unlocked.  ...
  • Page 6: Disabling A Forgotten Password And Setting A New Password

    Entering System Setup   1. Turn on (or restart) your computer.   2. When the blue DELL™ logo appears, press <F2> immediately.  If you wait too long and the operating system logo appears, continue to wait until you see the Microsoft® Windows® desktop. Then shut down your computer and try again.
  • Page 7: System Setup Options

    by using the up <Enter> to and down make that arrow keys. As selection an option is active. highlighted, the Option Field   displays more information   about that option and the option's current   and available settings.      ...
  • Page 8   Drive 0 through NOTE: These Drive n options appear as Drive 0 through Drive 3 for the small form-factor, small desktop and desktop computers and Drive 0 though Drive 5 for the small mini-tower and tower computers. Configures the serial ATA controller's operating mode.
  • Page 9 capability port protocol This option sets the address that the LPT Port built-in parallel port uses. The settings Address are 378h (default), 278h, and 3BCh. Enables or disables PCI Slots the PCI slots. Auto, the default setting, automatically Serial configures a connector to a Port #1 particular...
  • Page 10 Security security options. See "Security" for more information. This option provides restricted access to the computer's System Setup program in the same way that access to the system can be restricted with the System Password option. The settings are Set, Not Set, and Disabled.
  • Page 11 This option locks the system password field with the admin password. When the field is locked, Password the option to disable password Status security by pressing <Ctrl><Enter> when the computer starts is no longer available. When installed and enabled, this option alerts the user, during the next computer start-up,...
  • Page 12 Remote Wakeup- capable modem receives a wake up signal. Off is the default setting. On w/ Boot to NIC will allow the computer to attempt to boot from a network prior Remote to using the boot sequence. Wake-Up   NOTE: Normally, the system can be powered up...
  • Page 13: Changing Boot Sequence For The Current Boot

    Changing Boot Sequence for the Current Boot You can use this feature, for example, to tell the computer to boot from the CD drive so that you can run the Dell Diagnostics on the Drivers and Utilities CD, but you want the computer to boot from the hard drive when the diagnostic tests are complete. You can also use this feature to restart your computer to a USB device such as a floppy drive, memory key, or CD drive.
  • Page 14: Booting To A Usb Device

      3. Press the up- and down-arrow keys to move through the list of devices.   4. Press the spacebar to enable or disable a device (enabled devices have a checkmark).   5. Press <Shift><Up Arrow> or <Shift><Down Arrow> to move a selected device up or down the list.  Booting to a USB Device NOTE: To boot to a USB device, the device must be bootable.
  • Page 15   Desktop Computer     Small Mini-Tower Computer     Mini-Tower Computer       Jumper Setting Description PSWD Password features enabled. (default) Password features disabled. RTCRST Real-time clock reset.  ...
  • Page 16: Clearing Cmos Settings

       jumpered   unjumpered   3. Close the computer cover.   4. Connect your computer and monitor to electrical outlets, and turn them on.   5. After the Microsoft® Windows® desktop appears on your computer, shut down your computer.   6. Turn off the monitor and disconnect it from the electrical outlet.  ...
  • Page 17: Power Management

    2. Click Hardware and click Device Manager.   3. In the Device Manager window, click the plus (+) sign next to the processor type. If Hyper- Threading is enabled, the processor is listed twice. You can enable or disable Hyper-Threading through system setup.
  • Page 18: Replacing The Battery

    Back to Contents Page   Battery Dell™ OptiPlex™ GX280 Systems User's Guide   Replacing the Battery  Replacing the Battery   CAUTION: Before you begin any of the procedures in this section, follow the safety instructions in the Product Information Guide. NOTICE: To prevent static damage to components inside your computer, discharge static electricity from your body before you touch any of your computer's electronic components.
  • Page 19 2 system battery 3 negative side of battery connector NOTICE: To avoid damage to the battery connector, you must firmly support the connector while replacing the battery.   1. Install the new system battery. a.  Support the battery connector by pressing down firmly on the positive side of the connector. b.
  • Page 20 Back to Contents Page   Battery Dell™ OptiPlex™ GX280 Systems User's Guide   Replacing the Battery  Replacing the Battery   CAUTION: Before you begin any of the procedures in this section, follow the safety instructions in the Product Information Guide. NOTICE: To prevent static damage to components inside your computer, discharge static electricity from your body before you touch any of your computer's electronic components.
  • Page 21 2 system battery 3 negative side of battery connector NOTICE: To avoid damage to the battery connector, you must firmly support the connector while replacing the battery.   1. Install the new system battery. a.  Support the battery connector by pressing down firmly on the positive side of the connector. b.
  • Page 22: Before You Begin

    Hold a component such as a processor by its edges, not by its pins. NOTICE: Only a certified service technician should perform repairs on your computer. Damage due to servicing that is not authorized by Dell is not covered by your warranty.
  • Page 23   5. Open the computer cover. NOTICE: Before touching anything inside your computer, ground yourself by touching an unpainted metal surface, such as the metal at the back of the computer. While you work, periodically touch an unpainted metal surface to dissipate any static electricity that could harm internal components. Back to Contents Page  ...
  • Page 24: Removing The Chassis Intrusion Switch

    Back to Contents Page   Chassis Intrusion Switch Dell™ OptiPlex™ GX280 Systems User's Guide   Removing the Chassis Intrusion Switch   Replacing the Chassis Intrusion Switch   CAUTION: Before you begin any of the procedures in this section, follow the safety instructions located in the Product Information Guide.
  • Page 25   Desktop Computer   Small Mini-Tower Computer...
  • Page 26: Replacing The Chassis Intrusion Switch

      Mini-Tower Computer  Replacing the Chassis Intrusion Switch   1. Gently slide the chassis intrusion switch into its slot and reconnect the cable to the system board.   2. Close the computer cover.   3. Attach the computer stand, if it is used. NOTICE: To connect a network cable, first plug the cable into the network wall jack and then plug it into the computer.
  • Page 27 1. Turn on (or restart) your computer.   2. When the blue DELL™ logo appears, press <F2> immediately.  If you wait too long and the operating system logo appears, continue to wait until you see the Microsoft® Windows® desktop. Then shut down your computer and try again.   3. Select the Chassis Intrusion option and then press the left- or right-arrow key to select Reset. Change the setting to On, On-Silent, or Disabled.
  • Page 28: Cleaning Your Computer

    Back to Contents Page   Cleaning Your Computer Dell™ OptiPlex™ GX280 Systems User's Guide   CAUTION: Before you begin any of the procedures in this section, follow the safety instructions located in the Product Information Guide.   Computer, Keyboard, and Monitor   CAUTION: Before you clean your computer, disconnect the computer from the electrical outlet. Clean your computer with a soft cloth dampened with water.
  • Page 29 some protection from dust, fingerprints, and scratches. Cleaning products for CDs are safe to use on DVDs. Back to Contents Page  ...
  • Page 30: Closing The Computer Cover

    Back to Contents Page   Closing the Computer Cover Dell™ OptiPlex™ GX280 Systems User's Guide   CAUTION: Before you begin any of the procedures in this section, follow the safety instructions in the Product Information Guide.   1. Ensure that all cables are connected, and fold cables out of the way.
  • Page 31: About Your Desktop Computer

    If your operating system has ACPI enabled, when you press the power button the computer will perform an operating system shutdown. Dell badge Can be rotated to match the orientation of your computer. To rotate, place fingers around the outside of the badge, press firmly, and turn the badge.
  • Page 32: Back View

    11 CD/DVD drive Insert a CD or DVD (if applicable) in this drive.  Back View 1 card slots Access connectors for any installed PCI and PCI Express cards. 2 back panel Plug serial, USB, and other devices into the appropriate connector. connectors 3 power connector Insert the power cable.
  • Page 33: Inside Your Computer

    On computers with a network connector card, use the connector on the card. It is recommended that you use Category 5 wiring and connectors for your network. If you must use Category 3 wiring, force the network speed to 10 Mbps to ensure reliable operation. network Flashes a yellow light when the computer is transmitting or receiving activity light...
  • Page 34: System Board Components

    3 chassis intrusion switch 7 front I/O panel 4 system board      System Board Components fan connector (FAN) 11 intrusion switch connector (INTRUDER) processor connector (CPU) 12 password jumper (PSWD) power connector (12VPOWER) 13 PCI Express x16 connector (PEG) memory module connectors (DIMM1, DIMM2, DIMM3, DIMM4) 14 PCI riser connector (PCI1) serial ATA drive 0 and 2 connectors...
  • Page 35: Pci And Pci Express Cards And Serial Port Adapters

    PCI card slot and one half-height PCI Express x16 card slot NOTE: Your Dell computer uses only PCI and PCI Express slots. ISA cards are not supported.  PCI Cards   Installing a PCI Card   1. Follow the procedures in "Before You...
  • Page 36: Removing A Pci Card

    5. If you are removing the card permanently, install a filler bracket in the empty card-slot opening. If you need a filler bracket, contact Dell. NOTE: Installing filler brackets over empty card-slot openings is necessary to maintain FCC certification of the computer. The brackets also keep dust and dirt out of your computer.
  • Page 37   7. Replace the computer cover, reconnect the computer and devices to electrical outlets, and turn them on.   8. Uninstall the card's driver   9. If you removed a sound card:  Enter system setup, select Audio Controller, and change the setting to On. b.
  • Page 38 release tab card-edge connector card retention lever card connector card       7. Insert the card firmly into the card connector on the riser board.   8. Lower the card retention lever and press it into place, securing the card(s) in the computer.  ...
  • Page 39 6. If you are removing the card permanently, install a filler bracket in the empty card-slot opening. If you need a filler bracket, contact Dell. NOTE: Installing filler brackets over empty card-slot openings is necessary to maintain FCC certification of the computer. The brackets also keep dust and dirt out of your computer.
  • Page 40: Installing A Pci Express X16 Card

    b.  Connect the network cable to the integrated connector on the computer back panel.  PCI Express Cards Your computer supports one half-height PCI Express x16 card. If you are installing or replacing a PCI Express x16 card, see "Installing a PCI Express x16 Card,"...
  • Page 41: Removing A Pci Express X16 Card

    2. If necessary, disconnect any cables connected to the card.   3. Remove the card as instructed in step 2 in the preceding section.   4. If you are removing the card permanently, install a filler bracket in the empty card-slot opening. If you need a filler bracket, contact Dell.
  • Page 42: Installing A Serial Port Adapter

    NOTE: Installing filler brackets over empty card-slot openings is necessary to maintain FCC certification of the computer. The brackets also keep dust and dirt out of your computer.   5. Lower the retention arm and press it into place. NOTICE: To connect a network cable, first plug the cable into the network wall jack and then plug it into the computer.
  • Page 43: Removing A Serial Port Adapter

    retention lever serial port adapter bracket serial port adapter connector serial port adapter system board connector (SER_PS2)   8. Close the computer cover, reconnect the computer and devices to electrical outlets, and turn them on. After you open and close the cover, the chassis intrusion detector, if installed and enabled, causes the following message to appear on the screen at the next computer start-up: ALERT! Cover was previously removed.
  • Page 44 1 card cage 2 handle   4. If you are installing a new serial port adapter, remove the filler bracket to create an empty card-slot opening. If you are replacing an adapter that is already installed in the computer, remove the adapter. If necessary, disconnect any cables connected to the adapter. Grasp the serial port adapter by its top corners, and ease it out of its connector.
  • Page 45   1. Follow the procedures in "Before You Begin."   2. Remove the card cage (see step 3 of the previous procedure)   3. Press the tab to raise the retention lever.   4. Disconnect the cable that attaches the adapter to the system board.  ...
  • Page 46: Opening The Computer Cover

    Back to Contents Page   Opening the Computer Cover Dell™ OptiPlex™ GX280 Systems User's Guide   CAUTION: Before you begin any of the procedures in this section, follow the safety instructions in the Product Information Guide.   CAUTION: To guard against electrical shock, always unplug your computer from the electrical outlet before opening the cover.
  • Page 47: General Installation Guidelines

    Back to Contents Page   Drives Dell™ OptiPlex™ GX280 Systems User's Guide   General Installation Guidelines   Hard Drive   Floppy Drive   CD/DVD Drive Your computer supports:  One serial ATA hard drive  One optional ATA hard drive  One optional floppy drive  One optional CD or DVD drive 1 CD/DVD drive...
  • Page 48: Removing A Hard Drive

    Most interface connectors are keyed for correct insertion; that is, a notch or a missing pin on one connector matches a tab or a filled-in hole on the other connector. Keyed connectors ensure that the pin-1 wire in the cable (indicated by the colored stripe along one edge of the IDE cable—serial ATA cables do not use a colored stripe) goes to the pin-1 end of the connector.
  • Page 49: Installing A Hard Drive

      Remove the CD/DVD drive from the bay and carefully set it aside.   Remove the floppy drive from the bay and carefully set it aside.   4. Press in on the two securing clips on each side of the drive and slide the drive towards the back of the computer. NOTICE: Do not pull the drive out of the computer by the drive cables.
  • Page 50 1 securing tabs (2) 3 release tabs (2) 2 drive 4 hard drive bracket   5. Connect the power and hard-drive cables to the drive.   6. Locate the correct slot for the drive and gently insert the drive into the bay, sliding it forward until you hear a click or feel the drive securely installed. 1 drive 2 slot verification number  ...
  • Page 51: Removing A Floppy Drive

    17. Partition and logically format your drive before you proceed to the next step. For instructions, see the documentation that came with your operating system.   18. Test the hard drive by running the Dell Diagnostics.   19. Install your operating system on the hard drive.
  • Page 52   2. If you are replacing an existing drive: a.  Use a small flat-edge screw driver on the backside of the panel insert to gently pop off the insert. b.  Remove the shoulder screws (4) from the old drive.   3.
  • Page 53: Removing A Cd/Dvd Drive

      13. Verify that your computer works correctly by running the Dell Diagnostics.  CD/DVD Drive   CAUTION: Before you begin any of the procedures in this section, follow the safety instructions in the Product Information Guide.   CAUTION: To guard against electrical shock, always unplug your computer from the electrical outlet before opening the cover.
  • Page 54   11. Update your configuration information by setting the appropriate Drive option (0 or 1) under Drives. See "System Setup" for more information.   12. Verify that your computer works correctly by running the Dell Diagnostics. Back to Contents Page...
  • Page 55  ...
  • Page 56: Desktop Computer

    Dell™ OptiPlex™ GX280 Systems User's Guide   Desktop Computer   Documentation for Your Computer Advanced Features Finding Information LegacySelect Technology Control Specifications Manageability Cleaning Your Computer Security   Password Protection System Setup Booting to a USB Device    Clearing Forgotten Passwords Clearing CMOS Settings Hyper-Threading...
  • Page 57 Microsoft Corporation; IBM and OS/2 are registered trademarks of International Business Machines Corporation; NetWare and Novell are registered trademarks of Novell, Inc. Bluetooth is a trademark owned by Bluetooth SIG, Inc. and is used by Dell Inc. under license. ENERGY STAR is a registered trademark of the U.S. Environmental Protection Agency.
  • Page 58: Removing The Processor

    2 captive screw housing (2) NOTICE: If you are installing a processor upgrade kit from Dell, discard the original heat sink. If you are not installing a processor upgrade kit from Dell, reuse the original heat sink when you install your new processor.
  • Page 59: Installing The Processor

    processor cover processor socket release lever NOTICE: When replacing the processor, do not touch any of the pins inside the socket or allow any objects to fall on the pins in the socket.   5. Gently remove the processor from the socket. Leave the release lever extended in the release position so that the socket is ready for the new processor.
  • Page 60 If you are not installing a processor upgrade kit from Dell, reuse the original heat sink assembly when you replace the processor. If you installed a processor replacement kit from Dell, return the original heat sink assembly and processor to Dell in the same package in which your replacement kit was sent.
  • Page 61 3 captive screw housing (2)   10. Close the computer cover. NOTICE: To connect a network cable, first plug the cable into the network wall jack and then plug it into the computer.   11. Connect your computer and devices to electrical outlets, and turn them on. After you open and close the cover, the chassis intrusion detector, if installed and enabled, causes the following message to appear on the screen at the next computer start-up: ALERT! Cover was previously removed.
  • Page 62: Finding Information

    2.  Click User's and system guides and click User's guides.  Operating system updates and   Desktop System Software (DSS) patches The DSS is located on the Drivers and Utilities CD and on the Dell Support website.  Service Tag and Express Service   Service Tag and Microsoft Windows License Code...
  • Page 63  Microsoft Windows License Label These labels are located on your computer.  Use the Service Tag to identify your computer when you use support.dell.com or contact technical support.  Enter the Express Service Code to direct your call when contacting technical support. The Express Service Code is not available in all countries.
  • Page 64: Getting Help

    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 65: Problems With Your Order

     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 www.dell.com. For the telephone number to call to speak to a sales specialist, see the contact numbers for your region.
  • Page 66: Before You Call

    Toll-free numbers are for use within the country for which they are listed. 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 67 City Code: 11 Customer Care Fax 11 4515 7138 Aruba General Support toll-free: 800-1578 E-mail (Australia): au_tech_support@dell.com     E-mail (New Zealand): nz_tech_support@dell.com     Australia (Sydney) Home and Small Business 1-300-65-55-33 Government and Business toll-free: 1-800-633-559 International Access Code: 0011 Preferred Accounts Division (PAD) toll-free: 1-800-060-889...
  • Page 68 Country Code: 420 02  2186 27 14 TechFax 02  2186 27 28 City Code: 2 Switchboard 02  2186 27 11 Website: support.euro.dell.com     E-mail Support (portable computers): den_nbk_support@dell.com    E-mail Support (desktop computers): den_support@dell.com    E-mail Support (servers): Nordic_server_support@dell.com     Denmark (Copenhagen) Technical Support 7023 0182 International Access Code: 00 Customer Care (Relational) 7023 0184...
  • Page 69 City Codes: (1) (4) Corporate       Technical Support 0825 004 719 Customer Care 0825 338 339 Switchboard 01 55 94 71 00 Sales 01 55 94 71 00 01 55 94 71 01 Website: support.euro.dell.com   E-mail: tech_support_central_europe@dell.com   Germany (Langen) Technical Support 06103 766-7200 Home/Small Business Customer Care 0180-5-224400 International Access Code: 00 Global Segment Customer Care 06103 766-9570...
  • Page 70 81-44-556-4162 Technical Support (Dimension™ and Inspiron™) toll-free: 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 Technical Support (Axim™) toll-free: 0120-981-690 Japan (Kawasaki) Technical Support outside of Japan (Axim) 81-44-556-3468 International Access Code: 001...
  • Page 71 Relational Sales 020 674 50 00 Home/Small Business Sales Fax 020 674 47 75 Relational Sales Fax 020 674 47 50 Switchboard 020 674 50 00 Switchboard Fax 020 674 47 50 E-mail (New Zealand): nz_tech_support@dell.com    E-mail (Australia): au_tech_support@dell.com    New Zealand Home and Small Business 0800 446 255 International Access Code: 00 Government and Business 0800 444 617...
  • Page 72 Website: support.euro.dell.com   E-mail: swe_support@dell.com   E-mail Support for Latitude and Inspiron:   Swe-nbk_kats@dell.com Sweden (Upplands Vasby) E-mail Support for OptiPlex: Swe_kats@dell.com   E-mail Support for Servers: Nordic_server_support@dell.com   International Access Code: 00 Technical Support 08 590 05 199 Country Code: 46 Relational Customer Care 08 590 05 642...
  • Page 73 Dell Outlet Store (Dell refurbished computers) toll-free: 1-888-798-7561 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...
  • Page 74 Back to Contents Page  ...
  • Page 75 Back to Contents Page   Glossary Dell™ OptiPlex™ GX280 Systems 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 76   bootable disk — A disk that you can use to start your computer. In case your hard drive is damaged or your computer has a virus, ensure that you always have a bootable CD or floppy disk available.   bps —...
  • Page 77   Control Panel —  A Windows utility that allows you to modify operating system and hardware settings, such as display settings.   controller — A chip that controls the transfer of data between the processor and memory or between the processor and devices.  ...
  • Page 78 A connector on the system board (in some computers) where you insert an expansion card, connecting it to the system bus.   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.   extended display mode —...
  • Page 79 FCC — Federal Communications Commission — A U.S. agency responsible for enforcing communications-related regulations that state how much radiation computers and other electronic equipment can emit.   floppy drive — A disk drive that can read and write to floppy disks.  ...
  • Page 80 Hz — hertz — A unit of frequency measurement that equals 1 cycle per second. Computers and electronic devices are often measured in kilohertz (kHz), megahertz (MHz), gigahertz (GHz), or terahertz (THz).  I   IC — Industry Canada — The Canadian regulatory body responsible for regulating emissions from electronic equipment, much as the FCC does in the United States.
  • Page 81 A device that allows your computer to communicate with other computers over analog telephone lines. Three types of modems include: external, PC Card, and internal. You typically use your modem to connect to the Internet and exchange e-mail.   module bay — A bay that supports devices such as optical drives, a second battery, or a Dell TravelLite™ module.   monitor — The high-resolution TV-like device that displays computer output.
  • Page 82  N   network adapter — A chip that provides network capabilities. A computer may include a network adapter on its system board, or it may contain a PC Card with an adapter on it. A network adapter is also referred to as a NIC (network interface controller).  ...
  • Page 83   processor — A computer chip that interprets and executes program instructions. Sometimes the processor is referred to as the CPU (central processing unit).   program — Any software that processes data for you, including spreadsheet, word processor, database, and game packages. Programs require an operating system to run.
  • Page 84 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 support.dell.com or when you call Dell for customer service or technical support.  ...
  • Page 85 system tray — See notification area.  T   TAPI — telephony application programming interface — Enables Windows programs to operate with a wide variety of telephony devices, including voice, data, fax, and video.   text editor — A program used to create and edit files that contain only text; for example, Windows Notepad uses a text editor. Text editors do not usually provide word wrap or formatting functionality (the option to underline, change fonts, and so on).
  • Page 86  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 87: Removing The I/O Panel

    Back to Contents Page   I/O Panel Dell™ OptiPlex™ GX280 Systems User's Guide   Removing the I/O Panel (Small Form-Factor, Small Desktop, and Small Mini-Tower Computers)   Removing the I/O Panel (Desktop Computer)   Removing the I/O Panel (Mini-Tower Computer)   Replacing the I/O Panel  Removing the I/O Panel (Small Form-Factor, Small Desktop, and Small Mini-Tower Computers)  ...
  • Page 88 1 control-panel cable connector 4 securing screw 2 front-audio cable connector 5 chassis-intrusion switch cable connector 3 I/O cable connector 6 internal speaker cable connector   5. From inside the computer cover, remove the mounting screw that secures the I/O panel to the computer.  ...
  • Page 89 securing screw I/O panel I/O connector I/O connector pull loop  Removing the I/O Panel (Mini-Tower Computer)   CAUTION: Before you begin any of the procedures in this section, follow the safety instructions located in the Product Information Guide.   CAUTION: To guard against electrical shock, always unplug your computer from the electrical outlet before opening the cover.
  • Page 90: Replacing The I/O Panel

    2 securing screw 3 I/O panel 4 I/O connector 5 I/O connector pull loop  Replacing the I/O Panel   1. To replace the I/O panel, follow the removal procedures in the reverse order. NOTE: Use the guides on the I/O panel bracket to help position the I/O card in place and use the notch on the I/O panel bracket to help seat the card. Back to Contents Page  ...
  • Page 91: Ddr2 Memory Overview

    For information on the type of memory supported by your computer, look under "Memory" in "Specifications." NOTICE: Before you install new memory modules, download the most recent BIOS for your computer from the Dell Support website at support.dell.com.  DDR2 Memory Overview  Dual-channel DDR2 memory modules should be installed in pairs of matched memory size, speed, and technology.
  • Page 92: Replacing/Adding Additional Memory

    If you remove your original memory modules from the computer during a memory upgrade, keep them separate from any new modules that you may have, even if you purchased the new modules from Dell. If possible, do not pair an original memory module with a new memory module.
  • Page 93 1 memory connector closest to processor 2 securing clips (2) 3 connector   3. Align the notch on the bottom of the module with the crossbar in the connector. 1 cutouts (2) 2 memory module 3 notch 4 crossbar NOTICE: To avoid damage to the memory module, press the module straight down into the connector while you apply equal force to each end of the module.
  • Page 94 Then repeat steps 5, 6, and 7.   12. When the System Memory total is correct, press <Esc> to exit system setup.   13. Run the Dell Diagnostics to verify that the memory modules are operating properly. Back to Contents Page  ...
  • Page 95: About Your Mini-Tower Computer

    Back to Contents Page   About Your Mini-Tower Computer Dell™ OptiPlex™ GX280 Systems User's Guide   Front View   Back View   Inside Your Computer   System Board Components  Front View CD/DVD drive Insert a CD or DVD (if applicable) in this drive. floppy drive Insert floppy disk in this drive.
  • Page 96: Back View

    10 microphone Use the microphone connector to attach a microphone. connector  Back View 1 cover release latch This latch allows you to open the computer cover. 2 padlock ring Insert a padlock to lock the computer cover. 3 voltage selection switch (may Your computer is equipped with either an auto-sensing voltage selector or a manual voltage selection switch.
  • Page 97: Inside Your Computer

     Orange — A good connection exists between a 100-Mbps network and the computer.  Yellow — A good connection exists between a 1-Gbps (or 1000- Mbps) network and the computer.  Off — The computer is not detecting a physical connection to the network.
  • Page 98: System Board Components

    1 CD/DVD drive 5 system board 2 floppy drive 6 heat sink shroud assembly 3 power supply 7 hard drive 4 chassis intrusion switch      System Board Components fan connector (FAN) 12 password jumper (PSWD) processor connector (CPU) 13 PCI Express x16 connector (PEG) power connector (12VPOWER) 14 PCI Express x1 connector (PCIE1) memory module connectors (DIMM1, DIMM2, DIMM3, DIMM4)
  • Page 99 11 intrusion switch connector (INTRUDER)     Back to Contents Page  ...
  • Page 100: Pci And Pci Express Cards And Serial Port Adapters

    PCI Express x16 card slot  one PCI Express x1 card slot NOTE: Your Dell computer uses only PCI and PCI Express slots. ISA cards are not supported.  PCI Cards   Installing a PCI Card   1. Follow the procedures in "Before You...
  • Page 101: Removing A Pci Card

    1 card retention latch 4 card edge connector 2 alignment guide 5 card connector 3 card       CAUTION: Some network adapters automatically start the computer when they are connected to a network. To guard against electrical shock, be sure to unplug your computer from its electrical outlet before installing any cards.
  • Page 102: Installing A Pci Express Card

    5. If you are removing the card permanently, install a filler bracket in the empty card-slot opening. If you need a filler bracket, contact Dell. NOTE: Installing filler brackets over empty card-slot openings is necessary to maintain FCC certification of the computer. The brackets also keep dust and dirt out of your computer.
  • Page 103 b.  With your free hand, gently squeeze the sides of the retention mechanism to release it from the tab slots holding it in place. c.  Pivot the retention mechanism upward to release it from the two tab slots.   4. If you are installing a new card, remove the filler bracket to create a card-slot opening. Then continue with step 6.  ...
  • Page 104: Removing A Pci Express Card

    9. If applicable, before replacing the card retention mechanism, ensure that:  The tops of all cards and filler brackets are flush with the alignment bar.  The notch in the top of the card or filler bracket fits around the alignment guide.  ...
  • Page 105: Installing A Serial Port Adapter

    4. If you are removing the card permanently, install a filler bracket in the empty card-slot opening. If you need a filler bracket, contact Dell. NOTE: Installing filler brackets over empty card-slot openings is necessary to maintain FCC certification of the computer. The brackets also keep dust and dirt out of your computer.
  • Page 106 2. Gently push the release tab on the retention lever.   3. If necessary, disconnect any cables connected to the adapter.   4. Grasp the serial port adapter bracket by its top corners, and ease it out of its connector.  ...
  • Page 107: Opening The Computer Cover

    Back to Contents Page   Opening the Computer Cover Dell™ OptiPlex™ GX280 Systems User's Guide   CAUTION: Before you begin any of the procedures in this section, follow the safety instructions located in the Product Information Guide.   CAUTION: To guard against electrical shock, always unplug your computer from the electrical outlet before opening the cover.
  • Page 108: General Installation Guidelines

    Back to Contents Page   Drives Dell™ OptiPlex™ GX280 Systems User's Guide   General Installation Guidelines   Hard Drive   Adding a Second Hard Drive   Drive-Panel Inserts   Floppy Drive   CD/DVD Drive Your computer supports:  two serial ATA hard drives  two floppy or optional Zip drives  two CD or DVD drives NOTE: Due to the limited amount of drive bays and IDE controllers on this computer, you will not be able to connect all devices at once.
  • Page 109: Power Cable Connector

    Connector 1 colored stripe on IDE cable 2 interface cable connector 3 interface connector Most interface connectors are keyed for correct insertion; that is, a notch or a missing pin on one connector matches a tab or a filled-in hole on the other connector.
  • Page 110: Removing A Hard Drive

    NOTICE: To avoid damage to the drive, do not set it on a hard surface. Instead, set the drive on a surface, such as a foam pad, that will sufficiently cushion it. NOTE: If you are replacing a hard drive that contains data you want to keep, back up your files before you begin this procedure. Check the documentation for the drive to verify that it is configured for your computer.
  • Page 111 NOTE: If your replacement hard drive does not have the plastic guide bracket attached, remove the bracket from the old drive by unsnapping it from the drive. Snap the bracket onto the new drive. 1 drive 2 drive bracket 1 drive 2 securing tabs (4) 3 drive bracket  ...
  • Page 112: Adding A Second Hard Drive

    See the documentation for your operating system for instructions.   15. Test the hard drive by running the Dell Diagnostics.   16. If the drive you just installed is the primary drive, install your operating system on the hard drive.
  • Page 113 1 drive 2 securing tabs (4) 3 drive bracket   5. Move the first hard drive from the upper bay to the lower bay: a.  Disconnect the power and the hard-drive cables from the back of the first hard drive. b.
  • Page 114: Drive-Panel Inserts

      11. Connect your computer and devices to their electrical outlets, and turn them on.   12. See the documentation that came with the drive for instructions on installing any software required for drive operation. After you open and close the cover, the chassis intrusion detector, if installed and enabled, causes the following message to appear on the screen at the next computer start-up: ALERT! Cover was previously removed.
  • Page 115: Removing The Floppy Drive

    The drive panel only fits one way. drive panel  Floppy Drive   CAUTION: Before you begin any of the procedures in this section, follow the safety instructions located in the Product Information Guide.   CAUTION: To guard against electrical shock, always unplug your computer from the electrical outlet before opening the cover.  ...
  • Page 116   1. If you are replacing a floppy drive, remove the shoulder screws from the old drive and attach the screws to the replacement drive.   2. If you are installing a new floppy drive, remove the drive-panel insert, remove the shoulder screws from the inside of the drive-panel insert and attach the screws to the new drive.
  • Page 117: Removing A Cd/Dvd Drive

      Enter system setup and use the Diskette Drive option to enable your new floppy drive.   10. Verify that your computer works correctly by running the Dell Diagnostics.  CD/DVD Drive   CAUTION: Before you begin any of the procedures in this section, follow the safety instructions located in the Product Information Guide.
  • Page 118   2. If you are replacing a CD/DVD drive, remove the shoulder screws from the old drive and attach the screws to the replacement drive.   3. If you are installing a new CD/DVD drive, remove the drive-panel insert, remove the shoulder screws from the inside of the drive panel insert, and attach the screws to the new drive.
  • Page 119 12. Update your configuration information by setting the appropriate Drive option (0 or 1) under Drives. See "System Setup" for more information.   13. Verify that your computer works correctly by running the Dell Diagnostics. Back to Contents Page  ...
  • Page 120 2 captive screw housings (2) NOTICE: If you are installing a processor upgrade kit from Dell, discard the original heat sink. If you are not installing a processor upgrade kit from Dell, reuse the original heat sink when you install your new processor.
  • Page 121 processor cover processor socket release lever NOTICE: When replacing the processor, do not touch any of the pins inside the socket or allow any objects to fall on the pins in the socket.   5. Gently remove the processor from the socket. Leave the release lever extended in the release position so that the socket is ready for the new processor.
  • Page 122 If you are not installing a processor upgrade kit from Dell, reuse the original heat sink assembly when you replace the processor. If you installed a processor replacement kit from Dell, return the original heat sink assembly and processor to Dell in the same package in which your replacement kit was sent.
  • Page 123 Back to Contents Page  ...
  • Page 124: Replacing The Power Supply

    Back to Contents Page   Power Supply Dell™ OptiPlex™ GX280 Systems User's Guide   Replacing the Power Supply   DC Power Connectors  Replacing the Power Supply NOTICE: To prevent static damage to components inside your computer, discharge static electricity from your body before you touch any of your computer's electronic components.
  • Page 125: Small Desktop Computer

    NOTICE: To connect a network cable, first plug the cable into the network wall jack and then plug it into the computer.   11. Connect your computer and devices to electrical outlets, and turn them on.   Small Desktop Computer  ...
  • Page 126   Desktop Computer   CAUTION: Before you begin any of the procedures in this section, follow the safety instructions located in the Product Information Guide.   1. Follow the procedures in "Before You Begin."   2. Disconnect the DC power cables from the system board and the drives. Note the routing of the DC power cables underneath the tabs in the computer frame as you remove them from the system board and drives.
  • Page 127: Mini Tower Computer

      Small Mini-Tower Computer   CAUTION: Before you begin any of the procedures in this section, follow the safety instructions located in the Product Information Guide.   1. Follow the procedures in "Before You Begin."   2. Disconnect the DC power cables from the system board and the drives. Note the routing of the DC power cables underneath the tabs in the computer frame as you remove them from the system board and drives.
  • Page 128: Dc Power Connectors

      2. Disconnect the DC power cables from the system board and the drives. Note the routing of the DC power cables underneath the tabs in the computer frame as you remove them from the system board and drives. You must route these cables properly when you replace them to prevent their being pinched or crimped.
  • Page 129: Dc Power Connector P1

      DC Power Connector P1       Pin Number Signal name 18-AWG Wire +3.3 VDC Orange +3.3 VDC Orange Black +5 VDC Black +5 VDC Black Gray +5 VFP Purple +12 VDC Yellow +3.3 VDC* Orange –12 VDC Blue Black PS ON Green...
  • Page 130 DC Power Connector P2       Pin Number Signal Name 18-AWG Wire Black Black +12 VDC Yellow +12 VDC Yellow   DC Power Connectors P3       Pin Number Signal Name 18-AWG Wire +3.3 VDC Orange Black +5 VDC Black +12 VDC Yellow...
  • Page 131 +5 VDC +12 VDC Yellow   Small Desktop Power Supply DC Connector Pin Assignments   DC Power Connector P1       Pin Number Signal name 18-AWG Wire +3.3 VDC Orange +3.3 VDC Orange Black +5 VDC Black +5 VDC Black POK* Gray...
  • Page 132: Dc Power Connector P3

      DC Power Connector P2       Pin Number Signal Name 18-AWG Wire +3.3 VDC Orange Black +5 VDC Black +12 VDC Yellow   DC Power Connector P3       Pin Number Signal Name 18-AWG Wire +12 VDC Yellow Black Black...
  • Page 133 Desktop Power Supply DC Connector Pin Assignments   DC Power Connector P1       Pin Number Signal name 18-AWG Wire +3.3 VDC Orange +3.3 VDC Orange Black +5 VDC Black     Black   Gray   Purple   Yellow  ...
  • Page 134       Pin Number Signal Name 18-AWG Wire +3.3 VDC Orange Black +5 VDC Black +12 VDC Yellow DC Power Connectors P3 and P4       Pin Number Signal Name 18-AWG Wire +12 VDC Yellow Black Black +5 VDC DC Power Connector P5  ...
  • Page 135   Black Black +3.3 VDC Orange +5 VDC +12 VDC Yellow   Small Mini Tower Power Supply DC Connector Pin Assignments   DC Power Connector P1       Pin Number Signal name 18-AWG Wire +3.3 VDC Orange +3.3 VDC Orange Black  ...
  • Page 136   Black       *Sense connector. DC Power Connector P2       Pin Number Signal Name 18-AWG Wire +3.3 VDC Orange Black +5 VDC Black +12 VDC Yellow DC Power Connectors P3 and P4       Pin Number Signal Name 18-AWG Wire +12 VDC...
  • Page 137       Pin Number Signal Name 18-AWG Wire   Black Black +3.3 VDC Orange +5 VDC +12 VDC Yellow   Mini-Tower Power Supply DC Connector Pin Assignments   DC Power Connector P1       Pin Number Signal name 18-AWG Wire +3.3 VDC Orange...
  • Page 138: Dc Power Connector P4

    Black +5 VDC Black Gray +5 VFP Purple +12 VDC Yellow +3.3 VDC* Orange –12 VDC Blue Black PS ON Green Black Black Black +5 VCD +5 VCD *Sense connector.   DC Power Connector P2       Pin Number Signal Name 18-AWG Wire Black...
  • Page 139: Dc Power Connector P7

    Pin Number Signal Name 18-AWG Wire   Black Black +3.3 VDC Orange +5 VDC +12 VDC Yellow   DC Power Connector P5       Pin Number Signal Name 18-AWG Wire +3.3 VDC Orange Black +5 VDC Black +12 VDC Yellow  ...
  • Page 140: Fcc Notices (U.s. Only)

    Using shielded cables ensures that you maintain the appropriate EMC classification for the intended environment. For parallel printers, a cable is available from Dell. If you prefer, you can order a cable from Dell on the World Wide Web at accessories.us.dell.com/sna/category.asp?category_id=4117.
  • Page 141: Fcc Identification Information

    The following information is provided on the device or devices covered in this document in compliance with FCC regulations:  Model numbers: DHP, DHS, DCNE, DHM, DCSM  Company name: Dell Inc. One Dell Way Round Rock, Texas 78682 USA 512-338-4400 Back to Contents Page...
  • Page 142: Reinstalling Drivers And The Operating System

    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 143: Using Microsoft Windows Xp System Restore

    If this is your first time to use the Drivers and Utilities CD, the Installation window opens to inform you that the CD will begin the installation. Click OK and respond to the installation program prompts to complete the installation.   2. Click Next at the Welcome Dell System Owner screen.   3. Choose the appropriate selections for System Model, Operating System, Device Type, and Topic.
  • Page 144: Restoring The Computer To An Earlier Operating State

      3. Follow the instructions on the screen.   Restoring the Computer to an Earlier Operating State NOTICE: Before you restore the computer to an earlier operating state, save and close any open files and exit any open programs. Do not alter, open, or delete any files or programs until the system restoration is complete.
  • Page 145: Reinstalling Windows Xp

    The 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 146 6. When the Regional and Language Options screen appears, select the settings for your location and click Next.   7. Enter your name and organization (optional) in the Personalize Your Software screen, and click Next.   8. At the Computer Name and Administrator Password window, enter a name for your computer (or accept the one provided) and a password, and click Next.
  • Page 147: System Board

    Back to Contents Page   System Board Dell™ OptiPlex™ GX280 Systems User's Guide   Small Form-Factor System Board   Small Desktop System Board   Desktop System Board   Small Mini-Tower System Board   Tower System Board   Replacing the System Board  Small Form-Factor System Board RTC reset jumper (RTCRST) 14 line-in, line-out, and microphone connectors (AUDIO)
  • Page 148 RTC reset jumper (RTCRST) 14 front-panel audio cable connector (FRONTAUDIO) power connector (POWER) 15 line-in, line-out, and microphone connectors (AUDIO) floppy drive connector (DSKT) 16 network connector (NIC) and USB connector (USB2) battery socket (BATTERY) 17 USB connectors (USB1) internal speaker (SPEAKER) 18 diagnostic lights (DIAG LED) front-panel connector (FRONT PANEL) 19 serial port connector (SER1) and video connector (VGA)
  • Page 149 fan connector (FAN) 11 intrusion switch connector (INTRUDER) processor connector (CPU) 12 password jumper (PSWD) power connector (12VPOWER) 13 PCI Express x16 connector (PEG) memory module connectors (DIMM1, DIMM2, DIMM3, DIMM4) 14 PCI riser connector (PCI1) serial ATA drive 0 and 2 connectors 15 PCI connector (PCI3) (SATA0, SATA2) front-panel connector (FRONT PANEL)
  • Page 150 power connector (POWER) 15 line-in, line-out, and microphone connectors (AUDIO) RTC reset jumper (RTCRST) 16 network connector (NIC) and USB connector (USB2) floppy drive connector (DSKT) 17 USB connectors (USB1) internal speaker (SPEAKER) 18 diagnostic lights (DIAG LED) CD/DVD drive connector (IDE) 19 serial port connector (SER1) and video connector (VGA) front-panel connector (FRONTPANEL) 20 parallel port connector (PAR)
  • Page 151: Jumper Settings

    fan connector (FAN) 12 password jumper (PSWD) processor connector (CPU) 13 PCI Express x16 connector (PEG) power connector (12VPOWER) 14 PCI Express x1 connector (PCIE1) memory module connectors (DIMM1, DIMM2, DIMM3, DIMM4) 15 PCI connector (PCI1) serial ATA drive 0 and 2 connectors 16 PCI connector (PCI2) (SATA0, SATA2) front-panel connector (FRONT PANEL)
  • Page 152   Desktop Computer   Small Mini-Tower Computer   Mini-Tower Computer       Jumper Setting Description PSWD Password features are enabled. (default) Password features are disabled. RTCRST Real-time clock reset.      jumpered    unjumpered...
  • Page 153: Replacing The System Board

     Replacing the System Board   Removing the System Board: Small Form-Factor, Small Desktop, Small Mini-Tower Computers   1. Shut down the computer through the Start menu.   2. Ensure that your computer and attached devices are turned off. If your computer and attached devices did not automatically turn off when you shut down your computer, turn them off now.
  • Page 154   Removing the System Board: Desktop and Mini-Tower Computers   1. Shut down the computer through the Start menu.   2. Ensure that your computer and attached devices are turned off. If your computer and attached devices did not automatically turn off when you shut down your computer, turn them off now.
  • Page 155 1 mini-tower system board 2 screws (10)   11. Place the system board assembly that you just removed next to the replacement system board to ensure it is identical.   Replacing the System Board: Small Form-Factor, Small Desktop, and Small Mini-Tower Computers  ...
  • Page 156  Detach the replacement system board from its mounting plate by removing the four mounting screws from the heat-sink retention base. Set the mounting plate aside for later installation on the old system board prior to shipping back to Dell.
  • Page 157 NOTE: Some components and connectors on the replacement system board may be in different locations than the corresponding connectors on the existing system board.   6. Orient the replacement board by aligning the notches on the bottom to the tabs on the computer.  ...
  • Page 158: About Your Small Desktop Computer

    Back to Contents Page   About Your Small Desktop Computer Dell™ OptiPlex™ GX280 Systems User's Guide   Front View   Back View   Inside Your Computer   System Board Components   Attaching and Removing the Computer Stand  Front View front-panel Open the door to use the front-panel connectors. door headphone...
  • Page 159: Back View

    To exit from a power-saving state, press the power button or use the keyboard or the mouse if it is configured as a wake device in the Windows Device Manager. For more information about sleep states and exiting from a power-saving state, see "Power Management."...
  • Page 160: Inside Your Computer

    indicates that the network cable has been securely attached.   NOTE: Do not plug a telephone cable into the network connector. On computers with a network connector card, use the connector on the card. It is recommended that you use Category 5 wiring and connectors for your network.
  • Page 161: System Board Components

    1 hard drive padlock ring 2 chassis intrusion switch 7 heat sink and blower assembly 3 internal speaker system board 4 power supply floppy drive 5 card cage 10 CD/DVD drive  System Board Components RTC reset jumper (RTCRST) 14 front-panel audio cable connector (FRONTAUDIO) power connector (POWER) 15 line-in, line-out, and microphone connectors (AUDIO) floppy drive connector (DSKT)
  • Page 162: Attaching And Removing The Computer Stand

    front-panel connector (FRONT PANEL) 19 serial port connector (SER1) and video connector (VGA) CD/DVD drive connector (IDE) 20 parallel port connector (PAR) serial ATA drive 0 connector (SATA0) 21 power connector (12VPOWER) standby power light (AUX_PWR) 22 processor connector (CPU) 10 memory module connectors (DIMM1, DIMM2, DIMM3, DIMM4) 23 heat-sink/blower retention pad 11 PCI Express x16 connector (PEG)
  • Page 163: Pci And Pci Express Cards And Serial Port Adapters

    NOTE: Your Dell computer uses only PCI and PCI Express slots. ISA cards are not supported.  PCI Cards If you are installing or replacing a card, follow the procedures in the next section. If you are removing but not replacing a card, skip to "Removing a PCI...
  • Page 164 the card by its top corners, and ease it out of its connector.   4. Prepare the card for installation. See the documentation that came with the card for information on configuring the card, making internal connections, or otherwise customizing it for your computer.
  • Page 165: Removing A Pci Card

    6. If you are removing the card permanently, install a filler bracket in the empty card-slot opening. If you need a filler bracket, contact Dell. NOTE: Installing filler brackets over empty card-slot openings is necessary to maintain FCC certification of the computer. The brackets also keep dust and dirt out of your computer.
  • Page 166: Pci Express Cards

    After you open and close the cover, the chassis intrusion detector, if installed and enabled, causes the following message to appear on the screen at the next computer start-up: ALERT! Cover was previously removed.   Reset the chassis intrusion detector by changing Chassis Intrusion to On or On-Silent.
  • Page 167 1 hinged lever 2 indented tab (side view) b.  Press on the card lever away from the card connector. c.  Pull the card up and out of the card clip. 1 lever 2 securing slot (not all cards) 3 securing tab 4 PCI Express x16 card 5 PCI Express x16 card connector  ...
  • Page 168 1 bracket within slot 2 bracket caught outside of slot 3 fully seated card 4 not fully seated card   6. Release the card lever, ensuring that the tab fits into the notch on the front end of the card.  ...
  • Page 169 4. If you are removing the card permanently, install a filler bracket in the empty card-slot opening. If you need a filler bracket, contact Dell. NOTE: Installing filler brackets over empty card-slot openings is necessary to maintain FCC certification of the computer. The brackets also keep dust and dirt out of your computer.
  • Page 170   4. Prepare the card for installation. See the documentation that came with the card for information on configuring the card, making internal connections, or otherwise customizing it for your computer.   CAUTION: Some network adapters automatically start the computer when they are connected to a network. To guard against electrical shock, be sure to unplug your computer from its electrical outlet before installing any cards.
  • Page 171 5. If you are removing the card permanently, install a filler bracket in the empty card-slot opening. If you need a filler bracket, contact Dell. NOTE: Installing filler brackets over empty card-slot openings is necessary to maintain FCC certification of the computer. The brackets also keep dust and dirt out of your computer.
  • Page 172: Installing A Serial Port Adapter

    b.  Connect external audio devices to the audio connectors on the computer back panel.   10. If you removed an add-in network connector:  Enter system setup, select Network Controller, and change the setting to On. b.  Connect the network cable to the integrated connector on the computer back panel.  Serial Port Adapters  ...
  • Page 173: Removing A Serial Port Adapter

    8. If you are removing the adapter permanently, install a filler bracket in the empty card-slot opening. If you need a filler bracket, contact Dell. NOTE: Installing filler brackets over empty card-slot openings is necessary to maintain FCC certification of the computer. The brackets also keep dust and dirt out of your computer.
  • Page 174   Reset the chassis intrusion detector by changing Chassis Intrusion to On or On-Silent. NOTE: If an admin password has been assigned by someone else, contact your network administrator for information on resetting the chassis intrusion detector. Back to Contents Page  ...
  • Page 175: Opening The Computer Cover

    Back to Contents Page   Opening the Computer Cover Dell™ OptiPlex™ GX280 Systems User's Guide   CAUTION: Before you begin any of the procedures in this section, follow the safety instructions in the Product Information Guide.   CAUTION: To guard against electrical shock, always unplug your computer from the electrical outlet before opening the cover.
  • Page 176: General Installation Guidelines

    Back to Contents Page   Drives Dell™ OptiPlex™ GX280 Systems User's Guide   General Installation Guidelines   Hard Drive   Front-Panel Inserts   Floppy Drive   CD/DVD Drive   Cable Routing Your computer supports:  One serial ATA hard drive  One optional floppy drive  One optional CD or DVD drive 1 CD/DVD drive...
  • Page 177: Power Cable Connector

    1 interface connector 2 interface cable 3 colored stripe on IDE cable Most interface connectors are keyed for correct insertion; that is, a notch or a missing pin on one connector matches a tab or a filled-in hole on the other connector.
  • Page 178: Removing A Hard Drive

    Removing a Hard Drive   1. Disconnect the power and hard-drive cables from the drive. 1 hard-drive cable 2 power cable   2. Press in on the tabs on each side of the drive and slide the drive up and out. 1 tabs (2) 2 hard drive  ...
  • Page 179 16. Partition and logically format your drive before you proceed to the next step. For instructions, see the documentation that came with your operating system.   17. Test the hard drive by running the Dell Diagnostics.   18. Install your operating system on the hard drive.
  • Page 180: Front-Panel Inserts

     Front-Panel Inserts If you are installing a new floppy or CD/DVD drive instead of replacing a drive, remove the front-panel inserts:   1. Facing the front of the computer, use your fingers to remove the front-panel cover.   2. Press on the inserts until they pop free of the front-panel cover.  Floppy Drive  ...
  • Page 181: Installing A Floppy Drive

    1 power cable 2 floppy-drive cable 3 floppy-drive connector (DSKT)   4. Press inward on the two tabs on the sides of the drive, slide the drive upward, and remove it from the floppy-drive bay.   Installing a Floppy Drive  ...
  • Page 182: Removing A Cd/Dvd Drive

      Enter system setup and use the Diskette Drive option to enable your new floppy drive.   13. Verify that your computer works correctly by running the Dell Diagnostics.  CD/DVD Drive   CAUTION: Before you begin any of the procedures in this section, follow the safety instructions in the Product Information Guide.
  • Page 183: Installing A Cd/Dvd Drive

      1. Disconnect the power and CD/DVD drive cables from the back of the drive.   2. Disconnect the other end of the CD/DVD drive cable from the IDE connector on the system board. 1 power cable 2 CD/DVD drive cable 3 IDE connector  ...
  • Page 184: Cable Routing

    If an admin password has been assigned by someone else, contact your network administrator for information on resetting the chassis intrusion detector.   13. Update your configuration information by setting the appropriate Drive option (0 or 1) under Drives. See "System Setup" for more information.   14. Verify that your computer works correctly by running the Dell Diagnostics.  Cable Routing...
  • Page 185 1 floppy drive data cable 5 serial ATA drive data cable 2 CD/DVD drive data cable 6 12V power cable 3 control panel cable 7 front input/audio data cable 4 serial ATA drive power cable     Back to Contents Page  ...
  • Page 186: Notes, Notices, And Cautions

    Information in this document is subject to change without notice. © 2005 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, OptiPlex, Inspiron, Dimension, Latitude, Dell Precision, DellNet, TravelLite, Dell OpenManage, PowerVault, Axim, PowerEdge, PowerConnect,...
  • Page 187 Microsoft Corporation; IBM and OS/2 are registered trademarks of International Business Machines Corporation; NetWare and Novell are registered trademarks of Novell, Inc. Bluetooth is a trademark owned by Bluetooth SIG, Inc. and is used by Dell Inc. under license. ENERGY STAR is a registered trademark of the U.S. Environmental Protection Agency.
  • Page 188: Replacing The Processor

    Back to Contents Page   Processor Dell™ OptiPlex™ GX280 Systems User's Guide   Replacing the Processor   CAUTION: Before you begin any of the procedures in this section, follow the safety instructions in the Product Information Guide. NOTICE: Ground yourself by touching an unpainted metal surface on the back of the computer.
  • Page 189 5. Remove the two screws on the blower to remove it from the heat sink. NOTICE: If you are installing a processor upgrade kit from Dell, discard the original heat sink. If you are not installing a processor upgrade kit from Dell, reuse the original heat sink when you install your new processor.
  • Page 190 If you are not installing a processor upgrade kit from Dell, reuse the original heat sink assembly when you replace the processor. If you installed a processor replacement kit from Dell, return the original heat sink assembly and processor to Dell in the same package in which your replacement kit was sent.
  • Page 191 1 heat-sink/blower assembly 4 retention base 2 screw 5 heat sink 3 tab 6 screw 1 securing clip 2 tab 3 slot 4 retention base   17. Reconnect the cooling fan power cable to the FAN connector on the system board.
  • Page 192 Back to Contents Page  ...
  • Page 193: About Your Small Form-Factor Computer

    Back to Contents Page   About Your Small Form-Factor Computer Dell™ OptiPlex™ GX280 Systems User's Guide   Front View   Back View   Inside Your Computer   System Board Components   Attaching and Removing the Computer Stand  Front View 1 USB 2.0 Use the front USB connectors for devices that you connect occasionally,...
  • Page 194 1 back panel connectors Plug serial, USB, and other devices into the appropriate connector. 2 security cable slot Use a security cable with the slot to help secure your computer. 3 padlock ring Insert a padlock to lock the computer cover. 4 card slots Access connectors for any installed PCI and PCI Express cards.
  • Page 195 connectors such as printers and keyboards. It is recommended that you use the front USB connectors for devices that you connect occasionally, such as joysticks or cameras, or for bootable USB devices. diagnostic Use the lights to help you troubleshoot a computer problem based on lights the diagnostic code.
  • Page 196 RTC reset jumper (RTCRST) 14 line-in, line-out, and microphone connectors (AUDIO) floppy drive connector (DSKT) 15 network connector (NIC) and USB connector (USB2) battery socket (BATTERY) 16 USB connectors (USB1) internal speaker (SPEAKER) 17 diagnostic lights (DIAG LED) CD/DVD drive connector (IDE) 18 serial port connector (SER1) and video connector (VGA) front-panel connector (FRONTPANEL) 19 parallel port connector (PAR)
  • Page 197   3. Rotate the computer so that the stand is at the bottom and the drives are at the top. To remove the stand:   1. Turn the computer over so that the stand is at the top.   2. Loosen the thumbscrew and lift the stand away.  ...
  • Page 198 NOTE: Your Dell computer uses only PCI and PCI Express slots. ISA cards are not supported.  PCI Cards If you are installing or replacing a card, follow the procedures in the next section. If you are removing but not replacing a card, skip to "Removing a PCI...
  • Page 199   4. If you are replacing a card that is already installed in the computer, remove the card. If necessary, disconnect any cables connected to the card. Grasp the card by its top corners, and ease it out of its connector.  ...
  • Page 200: Pci Express Cards

    5. If you are removing the card permanently, install a filler bracket in the empty card-slot opening. If you need a filler bracket, contact Dell. NOTE: Installing filler brackets over empty card-slot openings is necessary to maintain FCC certification of the computer. The brackets also keep dust and dirt out of your computer.
  • Page 201 1 PCI Express x16 card 2 PCI Express x16 card slot If you are installing or replacing a PCI Express card, follow the procedures in the next section. If you are removing but not replacing a card, see "Removing a PCI Express Card."...
  • Page 202   6. When installing the card into the x16 card connector, position the card so the securing slot is aligned with the securing tab, and gently pull the securing tab.   7. Place the card in the connector and press down firmly. Ensure that the card is fully seated in the slot. If the card is full-length, insert the end of the card into the card guide bracket as you lower the card toward its connector on the system board.
  • Page 203 5. If you are removing the card permanently, install a filler bracket in the empty card-slot opening. If you need a filler bracket, contact Dell. NOTE: Installing filler brackets over empty card-slot openings is necessary to maintain FCC certification of the computer. The brackets also keep dust and dirt out of your computer.
  • Page 204  Enter system setup, select Network Controller, and change the setting to On. b.  Connect the network cable to the integrated connector on the computer back panel.  Serial Port Adapters   CAUTION: Before you begin any of the procedures in this section, follow the safety instructions in the Product Information Guide. NOTICE: To prevent static damage to components inside your computer, discharge static electricity from your body before you touch any of your computer's electronic components.
  • Page 205 5. If you are removing the adapter permanently, install a filler bracket in the empty card-slot opening. If you need a filler bracket, contact Dell. NOTE: Installing filler brackets over empty card-slot openings is necessary to maintain FCC certification of the computer. The brackets also keep dust and dirt out of your computer.
  • Page 206 Back to Contents Page   Opening the Computer Cover Dell™ OptiPlex™ GX280 Systems User's Guide   CAUTION: Before you begin any of the procedures in this section, follow the safety instructions in the Product Information Guide.   CAUTION: To guard against electrical shock, always unplug your computer from the electrical outlet before opening the cover.
  • Page 207 Back to Contents Page   Drives Dell™ OptiPlex™ GX280 Systems User's Guide   General Installation Guidelines   Hard Drive   Front-Panel Inserts   Floppy Drive   CD/DVD Drive   Cable Routing Your computer supports:  One serial ATA hard drive  One optional floppy drive  One optional CD or DVD drive 1 CD/DVD drive...
  • Page 208: Connecting And Disconnecting Drive Cables

    2 interface cable Most interface connectors are keyed for correct insertion; that is, a notch or a missing pin on one connector matches a tab or a filled-in hole on the other connector. Keyed connectors ensure that the pin-1 wire in the cable goes to the pin-1 end of the connector. The pin-1 end of a connector on a board or a card is usually indicated by a silk-screened "1"...
  • Page 209 1 power cable 2 hard-drive cable   2. Press in on the tabs on each side of the drive and slide the drive toward the I/O panel and remove it from the computer.   Installing a Hard Drive   1. Unpack the replacement hard drive, and prepare it for installation.  ...
  • Page 210 For instructions, see the documentation that came with your operating system.   16. Test the hard drive by running the Dell Diagnostics.   17. If the drive you just installed is the primary drive, install your operating system on the hard drive.
  • Page 211  Floppy Drive   CAUTION: Before you begin any of the procedures in this section, follow the safety instructions in the Product Information Guide.   CAUTION: To guard against electrical shock, always unplug your computer from the electrical outlet before opening the cover.  ...
  • Page 212 1 sled tab 2 sled   5. Remove the floppy drive from its sled by pulling the sled tab out while pushing the drive upand then sliding the drive out of the sled.   Installing a Floppy Drive   1. Snap the replacement drive into the sled and ensure that it is secure in the sled.  ...
  • Page 213: Cd/Dvd Drive

      Enter system setup and use the Diskette Drive option to enable your new floppy drive.   13. Verify that your computer works correctly by running the Dell Diagnostics.  CD/DVD Drive   CAUTION: Before you begin any of the procedures in this section, follow the safety instructions in the Product Information Guide.
  • Page 214   Removing a CD/DVD Drive   1. Disconnect the power cable from the interposer board.   2. Remove the interposer board from the drive. 1 interposer board   3. Press inward on the two tabs on the sides of the drive, and then slide the drive upward and remove it from the drive bay.  ...
  • Page 215 If an admin password has been assigned by someone else, contact your network administrator for information on resetting the chassis intrusion detector.   11. Update your configuration information by setting the appropriate Drive option (0 or 1) under Drives. See "System Setup" for more information.   12. Verify that your computer works correctly by running the Dell Diagnostics.  Cable Routing...
  • Page 216 1 CD/DVD drive data cable 6 IDE drive power cable 2 floppy drive data cable 7 front input/output data cable 3 control panel cable 8 front input/output audio cable 4 CD/DVD and floppy drive power cables 9 12V power cable 5 serial ATA drive data cable  ...
  • Page 217: Small Form-Factor Computer

    Dell™ OptiPlex™ GX280 Systems User's Guide   Small Form-Factor Computer   Documentation for Your Computer Advanced Features Finding Information LegacySelect Technology Control Specifications Manageability Cleaning Your Computer Security   Password Protection System Setup Booting to a USB Device    Clearing Forgotten Passwords Clearing CMOS Settings...
  • Page 218 Microsoft Corporation; IBM and OS/2 are registered trademarks of International Business Machines Corporation; NetWare and Novell are registered trademarks of Novell, Inc. Bluetooth is a trademark owned by Bluetooth SIG, Inc. and is used by Dell Inc. under license. ENERGY STAR is a registered trademark of the U.S. Environmental Protection Agency.
  • Page 219 Back to Contents Page   Processor Dell™ OptiPlex™ GX280 Systems User's Guide   Replacing the Processor   CAUTION: Before you begin any of the procedures in this section, follow the safety instructions in the Product Information Guide.   CAUTION: To prevent static damage to components inside your computer, discharge static electricity from your body before you touch any of your computer's electronic components.
  • Page 220 5. Remove the two screws on the blower to remove it from the heat sink. NOTICE: If you are installing a processor upgrade kit from Dell, discard the original heat sink. If you are not installing a processor upgrade kit from Dell, reuse the original heat sink when you install your new processor.
  • Page 221 If you are not installing a processor upgrade kit from Dell, reuse the original heat sink assembly when you replace the processor. If you installed a processor replacement kit from Dell, return the original heat sink assembly and processor to Dell in the same package in which your replacement kit was sent.
  • Page 222 1 heat-sink/blower assembly 4 retention base 2 screw 5 heat sink 3 tab 6 screw 1 securing clip 2 tab 3 slot 4 retention base   17. Reconnect the cooling fan power cable to the FAN connector on the system board.
  • Page 223 Back to Contents Page  ...
  • Page 224 Back to Contents Page   About Your Small Mini-Tower Computer Dell™ OptiPlex™ GX280 Systems User's Guide   Front View   Back View   Inside Your Computer   System Board Components   Front-Panel Door and Hinge Arms  Front View CD/DVD-drive Press to eject a CD or DVD from the drive. eject button hard-drive activity The hard drive light is on when the computer reads data from or writes data to the hard drive.
  • Page 225 "Diagnostic Lights" for a description of light codes that can help you troubleshoot problems with your computer. floppy-drive The floppy drive light is on when the computer reads data from or writes data to the floppy drive. Wait until this light turns off before activity light you remove the floppy disk from the drive.
  • Page 226 network To attach your computer to a network or broadband device, connect one adapter end of a network cable to either a network jack or your network or connector broadband device. Connect the other end of the network cable to the network adapter connector on the back panel of your computer.
  • Page 227 1 hard drive 6 heat sink and blower assembly 2 internal speaker 7 power supply 3 chassis intrusion switch 8 floppy drive 4 system board 9 CD/DVD drive 5 padlock ring and security cable slot      System Board Components power connector (POWER) 15 line-in, line-out, and microphone connectors (AUDIO) RTC reset jumper (RTCRST)
  • Page 228: Front-Panel Door And Hinge Arms

    serial ATA drive connectors (SATA0, SATA1, SATA2, SATA3) 21 power connector (12VPOWER) standby power light (AUX_PWR) 22 processor connector (CPU) battery socket (BATTERY) 23 heat-sink/blower retention pad 10 PCI Express x16 connector (PEG) 24 fan connector (FAN) 11 PCI connectors (PCI0, PCI1, PCI2) 25 serial port 2 connector (SER_PS2) 12 PCI Express x1 connector (PE1) 26 memory module connectors (DIMM1, DIMM2, DIMM3, DIMM4)
  • Page 229: Reattaching The Front Door

    1 pivot-bar slots (2) 2 pivot bar 3 hinge arms (2) in horizontal position 4 view slots (2) NOTICE: Before touching anything inside your computer, ground yourself by touching an unpainted metal surface, such as the metal at the back of the computer.
  • Page 230 1 hinge arms (2) in vertical position 2 front-panel door 3 front-door clips (2) Back to Contents Page  ...
  • Page 231 NOTE: Your Dell computer uses only PCI and PCI Express slots. ISA cards are not supported.  PCI Cards If you are installing or replacing a card, follow the procedures in the next section. If you are removing but not replacing a card, see "Removing a PCI...
  • Page 232   2. If you are installing a new card, remove the filler bracket to create a card-slot opening. Then continue with step 4.   3. If you are replacing a card that is already installed in the computer, remove the card. If necessary, disconnect any cables connected to the card.
  • Page 233 5. If you are removing the card permanently, install a filler bracket in the empty card-slot opening. If you need a filler bracket, contact Dell. NOTE: Installing filler brackets over empty card-slot openings is necessary to maintain FCC certification of the computer. The brackets also keep dust and dirt out of your computer.
  • Page 234 NOTE: If an admin password has been assigned by someone else, contact your network administrator for information on resetting the chassis intrusion detector.   9. Remove the card's driver from the operating system.   10. If you removed a sound card:  Enter system setup, select Audio Controller, and change the setting to On.
  • Page 235 2 edge connector retention arm 3 card connector lever 4 x1 card 10 x16 card 5 edge connector 11 securing tab 6 x1 card connector       3. If you are installing a new card, remove the filler bracket to create a card-slot opening. Then continue with step 5.  ...
  • Page 236 1 filler bracket 2 alignment bar 3 alignment guide 4 retention arm NOTICE: Do not route card cables over or behind the cards. Cables routed over the cards can prevent the computer cover from closing properly or cause damage to the equipment.  ...
  • Page 237 5. If you are removing the card permanently, install a filler bracket in the empty card-slot opening. If you need a filler bracket, contact Dell. NOTE: Installing filler brackets over empty card-slot openings is necessary to maintain FCC certification of the computer. The brackets also keep dust and dirt out of your computer.
  • Page 238 5. If you are removing the adapter permanently, install a filler bracket in the empty card-slot opening. If you need a filler bracket, contact Dell. NOTE: Installing filler brackets over empty card-slot openings is necessary to maintain FCC certification of the computer. The brackets also keep dust and dirt out of your computer.
  • Page 239 Back to Contents Page  ...
  • Page 240 Back to Contents Page   Opening the Computer Cover Dell™ OptiPlex™ GX280 Systems User's Guide   CAUTION: Before you begin any of the procedures in this section, follow the safety instructions located in the Product Information Guide.   CAUTION: To guard against electrical shock, always unplug your computer from the electrical outlet before opening the cover.
  • Page 241 Back to Contents Page   Drives Dell™ OptiPlex™ GX280 Systems User's Guide   General Installation Guidelines   Hard Drive   Adding a Second Hard Drive   Front-Panel Inserts   Floppy Drive   CD/DVD Drive   Cable Routing Your computer supports:  two serial ATA hard drives  two floppy or optional Zip drives  two CD or DVD drives...
  • Page 242     IDE Drive Connector Serial ATA Connector 1 interface connector 2 interface cable 3 colored stripe on IDE cable Most interface connectors are keyed for correct insertion; that is, a notch or a missing pin on one connector matches a tab or a filled-in hole on the other connector.
  • Page 243 CAUTION: To guard against electrical shock, always unplug your computer from the electrical outlet before opening the cover. NOTICE: To avoid damage to the drive, do not set it on a hard surface. Instead, set the drive on a surface, such as a foam pad, that will sufficiently cushion it.
  • Page 244 1 drive 2 bracket rails (2) 3 screws (4)   4. Gently slide the drive into place until you hear a click or feel the drive securely installed.   5. Connect the power and hard-drive cables to the drive. 1 power cable 2 hard-drive cable  ...
  • Page 245 See the documentation for your operating system for instructions.   16. Test the hard drive by running the Dell Diagnostics.   17. If the drive you just installed is the primary drive, install your operating system on the hard drive.
  • Page 246 1 power cable 2 hard-drive cables   10. Close the computer cover. NOTICE: To connect a network cable, first plug the cable into the network wall jack and then plug it into the computer.   11. Connect your computer and devices to their electrical outlets, and turn them on.  ...
  • Page 247   5. Remove the insert from the insert frame by pressing on the four tabs. 1 insert frame for CD/DVD drive bay 2 insert frame for floppy drive bay   6. Reattach the empty insert frame over the front of the drive bay. The insert frame fits only one way.
  • Page 248   3. Press inward on the two tabs on the sides of the drive, slide the drive upward, and remove it from the floppy-drive bay.   Installing a Floppy Drive   1. If you are replacing a drive and the new drive does not have the bracket rails attached, remove the rails from the old drive by removing the two screws that secure each rail to the drive.
  • Page 249   Enter system setup and use the Diskette Drive option to enable your new floppy drive.   12. Verify that your computer works correctly by running the Dell Diagnostics.  CD/DVD Drive   CAUTION: Before you begin any of the procedures in this section, follow the safety instructions located in the Product Information Guide.
  • Page 250 2. Connect the new drive to the set of rails that are attached to the inside of the cover. If a set of rails is not attached inside the cover, contact Dell.   3. If you are installing a replacement drive and the new drive does not have the bracket rails attached, remove the rails from the old drive by removing the two screws that secure each rail to the drive.
  • Page 251 If an admin password has been assigned by someone else, contact your network administrator for information on resetting the chassis intrusion detector.   13. Update your configuration information by setting the appropriate Drive option (0 or 1) under Drives. See "System Setup" for more information.   14. Verify that your computer works correctly by running the Dell Diagnostics.  Cable Routing...
  • Page 252 1 12V power cable 6 serial ATA hard-drive power cable 2 CD/DVD drive data cable 7 control panel cable 3 CD/DVD drive power cable 8 serial ATA hard-drive data cable 4 floppy drive power cable 9 front input/output audio cable 5 floppy drive data cable  ...
  • Page 253: Small Mini-Tower Computer

    Dell™ OptiPlex™ GX280 Systems User's Guide   Small Mini-Tower Computer   Documentation for Your Computer Advanced Features Finding Information LegacySelect Technology Control Specifications Manageability Cleaning Your Computer Security   Password Protection System Setup Booting to a USB Device    Clearing Forgotten Passwords Clearing CMOS Settings...
  • Page 254 Microsoft Corporation; IBM and OS/2 are registered trademarks of International Business Machines Corporation; NetWare and Novell are registered trademarks of Novell, Inc. Bluetooth is a trademark owned by Bluetooth SIG, Inc. and is used by Dell Inc. under license. ENERGY STAR is a registered trademark of the U.S. Environmental Protection Agency.
  • Page 255 Back to Contents Page   Processor Dell™ OptiPlex™ GX280 Systems User's Guide   Removing the Processor   Installing the Processor   CAUTION: Before you begin any of the procedures in this section, follow the safety instructions located in the Product Information Guide.   CAUTION: To prevent static damage to components inside your computer, discharge static electricity from your body before you touch any of your computer's electronic components.
  • Page 256 3 retention base NOTICE: If you are installing a processor upgrade kit from Dell, discard the original heat sink. If you are not installing a processor upgrade kit from Dell, reuse the original heat sink when you install your new processor.
  • Page 257 processor cover processor socket release lever NOTICE: When replacing the processor, do not touch any of the pins inside the socket or allow any objects to fall on the pins in the socket.   7. Remove the processor from the socket. Leave the release lever extended in the release position so that the socket is ready for the new processor.
  • Page 258 If you are not installing a processor upgrade kit from Dell, reuse the original heat sink assembly when you replace the processor. If you installed a processor replacement kit from Dell, return the original heat sink assembly and processor to Dell in the same package in which your replacement kit was sent.
  • Page 259 1 securing clip 2 tab 3 slot 4 retention base   9. Lower the airflow shroud over the heat sink.   10. Reconnect the cooling fan power cable to the FAN connector on the system board.   11. Reconnect the power cable to the 12VPOWER connector on the system board.
  • Page 260: Solving Problems

    Check the cable connections   Check for software and hardware conflicts   Run the Dell Diagnostics   CD and DVD drive problems NOTE: Because of different regions worldwide and different disc formats, not all DVD titles work in all DVD drives.
  • Page 261: Problems Writing To A Cd/Dvd-Rw Drive

      Running the Dell IDE Hard Drive Diagnostics  —  The Dell IDE Hard Drive Diagnostics is a utility that tests the hard drive to troubleshoot or confirm a hard drive failure. 1.  Turn on your computer (if your computer is already on, restart it). 2.   When F2 = Setup appears in the upper-right corner of the screen, press <Ctrl><Alt><d>.
  • Page 262: Lockups And Software Problems

      Run the Dell Diagnostics   Check for software and hardware conflicts  Lockups and Software Problems   CAUTION: Before you begin any of the procedures in this section, follow the safety instructions located in the Product Information Guide. NOTE: If you installed a unique image on your computer or if you had to reinstall your operating system, run the DSS utility. DSS is available on your Drivers and Utilities CD and at support.dell.com.
  • Page 263: Other Software Problems

    Use a virus-scanning program to check the hard drive, floppy disks, or CDs   Save and close any open files or programs and shut down your computer through the Start menu   Run the Dell Diagnostics  —  If all tests run successfully, the error condition is related to a software problem.  Memory Problems NOTE: Your computer might emit a series of beeps (beep code) during start-up if the monitor cannot display errors or problems.
  • Page 264: Network Problems

    Mouse Port option is set to On. 2.  Exit system setup and restart the computer.   Reinstall the mouse driver   Run the Dell Diagnostics   Check for software and hardware conflicts  Network Problems Fill out the Diagnostics Checklist as you complete these checks.
  • Page 265: Printer Problems

    Fill out the Diagnostics Checklist as you complete these checks.   CAUTION: Before you begin any of the procedures in this section, follow the safety instructions located in the Product Information Guide.   If the power light is green and the computer is not responding  —  See "Diagnostic Lights."   If the power light is blinking green  —  The computer is in standby mode. Press a key on the keyboard or move the mouse to resume normal operation.
  • Page 266: Restoring Default Settings

    Serial Port #1 setting (or the Serial Port #2 settings if you have an optional serial port adapter installed) or the LPT Port Mode setting matches the recommended settings.   Run the Dell Diagnostics  Sound and Speaker Problems Fill out the Diagnostics Checklist as you complete these checks.
  • Page 267: No Sound From Headphones

    Check the device option setting  —  Enter system setup and ensure that the Audio Controller option is set to On. Exit system setup and restart your computer.   Run the Dell Diagnostics   Check for software and hardware conflicts   No sound from headphones  ...
  • Page 268: Video And Monitor Problems

    6.  Uncheck the Enable digital CD audio for this CD-ROM device box. Windows 2000 1.  Click the Start button, point to Settings® Control Panel, and then click Sounds and Multimedia. 2.  Click the Hardware tab. 3.  Click the name of your CD drive and click Properties. 4.
  • Page 269   Adjust the Windows display settings  —   Windows XP 1.  Click the Start button, click Control Panel, and then click Appearance and Themes. 2.  Click Display and click the Settings tab. 3.  Try different settings for Screen resolution and Color quality. Windows 2000 1.  Click the Start button, point to Settings, and then click Control Panel. 2.
  • Page 270: Specifications

    Back to Contents Page   Specifications Dell™ OptiPlex™ GX280 Systems User's Guide   Microprocessor Microprocessor type ® Intel® Pentium 4; design provides for future Dell- supported upgrades. Level 1 (L1) cache 32 KB Level 2 (L2) cache 1 MB pipelined-burst, eight-way set associative, write-back SRAM  ...
  • Page 271 Controllers Drives small form-factor: one serial ATA controller supporting one device and one parallel Ultra ATA/100 IDE supporting two devices per channel with one channel small desktop: one serial ATA controllers supporting one device each and one parallel Ultra ATA/100 IDE supporting two devices per channel with one channel desktop: two serial ATA controllers supporting one device each and one parallel Ultra ATA/100 IDE...
  • Page 272 connector data width (maximum) 32 bits PCI Express connector one x1 and one x16 connector size 36 pins (x1) and 120 pins (x16) connector data width (maximum) one PCI Express lane (x1) and 16 PCI Express lanes (x16) Mini-Tower full-height cards supported  ...
  • Page 273 CD drive audio interface 4-pin connector Front audio 10-pin connector (For the optional audio customer kit) Front panel 40-pin connector   Key Combinations <Ctrl><Alt><Del> If running Microsoft® Windows® XP, brings up the Windows Security window. If in MS-DOS® mode, restarts (reboots) the computer <F2>...
  • Page 274 Small Desktop computer: Height 10.6 cm (4.2 inches) Width 38.9 cm (15.3 inches) Depth 43.2 cm (17 inches) Weight 9.9 kg (22 lbs) Desktop computer   Height 11.4 cm (4.5 inches) Width 39.9 cm (15.7 inches) Depth 35.3 cm (13.9) inches Weight 10.4 kg (23 lbs) Small Mini-Tower computer:...
  • Page 275: Mini-Tower Computer

    Dell™ OptiPlex™ GX280 Systems User's Guide   Mini-Tower Computer   Documentation for Your Computer Advanced Features Finding Information LegacySelect Technology Control Specifications Manageability Cleaning Your Computer Security   Password Protection System Setup Booting to a USB Device    Clearing Forgotten Passwords Clearing CMOS Settings Hyper-Threading...
  • Page 276 Microsoft Corporation; IBM and OS/2 are registered trademarks of International Business Machines Corporation; NetWare and Novell are registered trademarks of Novell, Inc. Bluetooth is a trademark owned by Bluetooth SIG, Inc. and is used by Dell Inc. under license. ENERGY STAR is a registered trademark of the U.S. Environmental Protection Agency.
  • Page 277 Microsoft Corporation; IBM and OS/2 are registered trademarks of International Business Machines Corporation; NetWare and Novell are registered trademarks of Novell, Inc. Bluetooth is a trademark owned by Bluetooth SIG, Inc. and is used by Dell Inc. under license. ENERGY STAR is a registered trademark of the U.S. Environmental Protection Agency.
  • Page 278: Troubleshooting Tools And Utilities

    2. When the DELL™ logo appears, press <F12> immediately.  NOTE: If you see a message stating that no diagnostics utility partition has been found, run the Dell Diagnostics from your Drivers and Utilities CD (optional). If you wait too long and the operating system logo appears, continue to wait until you see the Microsoft® Windows® desktop. Then shut down your computer and try again.
  • Page 279: Dell Diagnostics Main Menu

    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. Your computer's Service Tag is listed in the System Info option in system setup.
  • Page 280: Diagnostic Lights

    Check the diagnostic lights to see if the specific problem is identified. If the computer does not boot, contact Dell for technical assistance. Blinking yellow A power supply or system board failure has occurred. Check the diagnostic lights to see if the specific problem is identified.
  • Page 281: Beep Codes

    If your computer beeps during start-up:   1. Write down the beep code on the Diagnostics Checklist.   2. Run the Dell Diagnostics to identify a more serious cause.   Contact Dell for technical assistance.     Code...
  • Page 282: Error Messages

    4.  See the program documentation for installation instructions.   Alert! Previous attempts at booting this system have failed at checkpoint [nnnn]. For help in resolving this problem, please note this checkpoint and contact Dell Technical Support  —   Contact Dell and report the checkpoint code (nnnn) to the support technician.   Attachment failed to respond  —...
  • Page 283   No timer tick interrupt  —   Run the Dell Diagnostics.   Non-system disk or disk error  —  Replace the floppy disk with one that has a bootable operating system or remove the floppy disk from drive A and restart the computer.
  • Page 284 Dell Diagnostics.   WARNING: Dell's Disk Monitoring System has detected that drive [0/1] on the [primary/secondary] EIDE controller is operating outside of normal specifications. It is advisable to immediately back up your data and replace your hard drive by calling your support desk or Dell  —  If no replacement drive is immediately available and the drive is not the only bootable drive,...
  • Page 285: Resolving Software And Hardware Incompatibilities

     Resolving Software and Hardware Incompatibilities If a device is either not detected during the operating system setup or is detected but incorrectly configured, you can use Device Manager or the Hardware Troubleshooter to resolve the incompatibility.   ® ® Microsoft Windows To resolve incompatibilities using Device Manager:  ...
  • Page 286: Warranty

    Dell™ OptiPlex™ GX280 Systems User's Guide Dell Inc. ("Dell") manufactures its hardware products from parts and components that are new or equivalent to new in accordance with industry-standard practices. For information about the Dell warranty for your computer, see the Product Information Guide or separate paper warranty document that shipped with your computer.
  • Page 287: Microsoft® Windows® Xp Features

    Back to Contents Page   Microsoft® Windows® XP Features Dell™ OptiPlex™ GX280 Systems User's Guide   Transferring Information to a New Computer   User Accounts and Fast User Switching   Setting Up a Home and Office Network  Transferring Information to a New Computer The Microsoft Windows XP operating system provides a Files and Settings Transfer wizard to move data from the source computer to the new computer. You can move data such as:  E-mails...
  • Page 288: User Accounts And Fast User Switching

     User Accounts and Fast User Switching   Adding User Accounts After the Microsoft Windows XP operating system is installed, the administrator or a user with administrator rights can create additional user accounts.   1. Click the Start button and click Control Panel.  ...
  • Page 289 1. Click the Start button, point to All Programs® Accessories® Communications, and then click Network Setup Wizard.   2. On the welcome screen, click Next.   3. Click Checklist for creating a network. NOTE: Selecting the connection method This computer connects directly to the Internet enables the integrated firewall provided with Windows XP SP1.

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Optiplex gx280 series