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Dell OptiPlex GX110 Service Manual
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Dell OptiPlex GX110 Service Manual

Dell OptiPlex GX110 Service Manual

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Dell™ OptiPlex™ GX110 Systems Service Manual
Small-Form-Factor Chassis — Removing and Replacing Parts
Low-Profile Chassis — Removing and Replacing Parts
Midsize Chassis—Removing and Replacing Parts
Mini Tower Chassis — Removing and Replacing Parts
Notes, Notices, and Cautions
Throughout this guide, blocks of text may be accompanied by an icon and printed in bold type or in italic type. These blocks are notes, notices, and
cautions, and they are used as follows:
NOTE: A NOTE indicates important information that helps you make better use of your system.
NOTICE: A NOTICE indicates either potential damage to hardware or loss of data and tells you how to avoid the problem.
CAUTION: A CAUTION indicates a potentially hazardous situation which, if not avoided, may result in minor or moderate
injury.
Information in this document is subject to change without notice.
© 1999–2000 Dell Computer Corporation. All rights reserved.
Reproduction in any manner whatsoever without the written permission of Dell Computer Corporation is strictly forbidden.
Trademarks used in this text: Dell and OptiPlex are trademarks of Dell Computer Corporation; Microsoft, MS-DOS, and Windows NT are registered trademarks of Microsoft
Corporation.
Other trademarks and trade names may be used in this document to refer to either the entities claiming the marks and names or their products. Dell Computer Corporation
disclaims any proprietary interest in trademarks and trade names other than its own.
Initial release: 4 Oct 1999
Last revised: 31 Jul 2000

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Summary of Contents for Dell OptiPlex GX110

  • Page 1 Corporation. Other trademarks and trade names may be used in this document to refer to either the entities claiming the marks and names or their products. Dell Computer Corporation disclaims any proprietary interest in trademarks and trade names other than its own.

  • Page 2: Recommended Tools

    System Board Drives  Overview This section provides procedures for removing and replacing the components, assemblies, and subassemblies in the Dell OptiPlex low-profile chassis GX110 system. Unless otherwise noted, each procedure assumes that the following conditions exist: You have performed the steps in "Precautionary...

  • Page 3: Internal Views

    3. If you are disconnecting a peripheral from the computer or are removing a component from the system board, wait 10 to 20 seconds after disconnecting the computer from AC power before disconnecting the peripheral or removing the component to avoid possible damage to the system board.

  • Page 4: Eject, Power, And Reset Buttons

    To remove the low-profile chassis computer cover, perform the following steps: 1. Press in on the two securing buttons until the cover is free to swing up (see Figure 3). 2. Raise the back  of the cover, and pivot it toward the front of the computer. 3. Lift the cover off the hooks at the front of the chassis. 4.

  • Page 5: Front-Panel Inserts

    1 Disk eject button 2 Reset button 3 Power button To remove the eject, power, and reset buttons, perform the following steps: 1. Lay the computer cover on a flat work surface, with the inside of the top cover facing up. 2.

  • Page 6: Chassis Intrusion Switch

    To remove the control panel in the low-profile chassis, perform the following steps: 1. Disconnect the control panel cable from the PANEL connector on the system board (see "System Board Labels" for the location of the PANEL connector). 2. From inside the chassis, remove the mounting screw that secures the control panel to the chassis. 3.
  • Page 7 1 5.25-inch  drive 2 3.5-inch diskette drive 3 Hard-disk drive 4 Chassis intrusion switch NOTE: Computer configurations differ. Your computer may have an Iomega Zip drive installed instead of a 3.5-inch diskette drive, or your computer may have no externally accessible drives installed. 3.5-Inch Diskette Drive To remove the 3.5-inch diskette drive assembly from the drive shelf, perform the following steps: 1.
  • Page 8 Figure 11. Hard-Disk Drive to Bracket Installation 1 Hard-disk drive 2 Bracket 3 Screws (4) To install a replacement hard-disk drive, perform the following steps.   CAUTION: To avoid the possibility of electric shock, turn off the computer and any peripherals, disconnect them from electrical outlets, and then wait at least 5 seconds before you remove the computer cover. Also, before you install a drive, see the other precautions in "Precautionary Measures."...

  • Page 9: System Power Supply

    (including Microsoft® Windows NT®, when using a FAT16 file system) do not support drive partitions larger than 2 GB. 17. Test the hard-disk drive by running the Dell Diagnostics (see the online System User's Guide for complete information. 18. If the drive you just installed is the primary drive, install your operating system on the hard-disk drive.

  • Page 10: Expansion-Card Cage

    3. Remove the screw below the fan guard on the back of the chassis. 4. Slide the power supply toward the front of the computer approximately 1 inch. 5. Lift the power supply up and out of the chassis.   Expansion-Card Cage Figure 14. Expansion-Card Cage Removal 1 Securing lever 2 Expansion-card cage 3 Slots (2) 4 Tabs (2)

  • Page 11: System Board Components

    CAUTION: Ground yourself by touching an unpainted metal surface on the back of the computer. NOTICE: Use a wrist grounding strap as explained in "Precautionary Measures." Remove the expansion-card cage. Remove the expansion cards installed in the slots. 3. Remove the screws securing the riser board to the expansion-card cage. 4.

  • Page 12: Expansion Cards

    To change a jumper setting, pull the jumper off its pin(s) and either remove it entirely, or carefully fit it down onto the pin(s) indicated. Dell shipped your computer with a PSWD jumper installed, meaning that password features for this computer are enabled. When you remove the jumper, or when you install the jumper on only one of the two pins, the password features are disabled.
  • Page 13 5. If you are removing the card permanently, install a metal filler bracket over the empty card-slot opening. NOTE: Installing filler brackets over empty card-slot openings is necessary to maintain Federal Communications Commission (FCC) certification of the system. The brackets also keep dust and dirt out of your computer. 6.
  • Page 14 1 Filler bracket 3. Insert the expansion card into the expansion-card connector. If the expansion card is full-length, insert the front end of the card into the corresponding card guide on the inside front of the chassis as you insert the card into its connector. Insert the card's edge connector firmly into the expansion-card slot. 4.

  • Page 15: Microprocessor/Heat Sink Assembly

    CAUTION: Use a wrist grounding strap as explained in "Precautionary Measures." NOTE: Dell recommends that only a technically knowledgeable person perform this procedure. To replace a microprocessor, perform the following steps: Remove the computer cover.

  • Page 16: System Battery

    12. While in System Setup, reset the chassis intrusion detector. In the Chassis Intrusion option, press the left- or right-arrow key to select Reset, and then choose Enabled, Enabled-Silent, or Disabled. 13. Run the Dell Diagnostics to verify that the new microprocessor is operating correctly. System Battery Figure 27.
  • Page 17 3. Disconnect all cables from the system board. 4. Remove the screw that secures the system board to the bottom of the chassis. 5. Slide the system board toward the front of the chassis until it stops. 6. Carefully lift the system board out of the chassis (be sure to lift evenly and not twist the system board). To replace the system board, perform the following steps: 1.
  • Page 18 Control Panel System Board Overview This section provides procedures for removing and replacing the components, assemblies, and subassemblies in the Dell OptiPlex GX110 midsize chassis system. Unless otherwise noted, each procedure assumes that the following conditions exist: You have performed the steps in "Precautionary...

  • Page 19: Restarting The System

    Figures 19 and 20 or the internal service label). Restarting the System To restart the system and reset the chassis intrusion detector, perform the following steps: Replace the computer cover and reconnect the computer and peripherals to their electrical outlets and turn them on. NOTE: When you start the system, the chassis intrusion detector will cause the following message to be displayed at the next system start-up: ALERT! Cover was previously removed.

  • Page 20: Internal View

    1 Securing buttons (2) 2 Cover hooks (4) To replace the computer cover, perform the following steps: 1. Check all cable connections, especially those that might have come loose during your work. Fold cables out of the way so that they do not catch on the computer cover.

  • Page 21: Control Panel

    1 5.25-inch front-panel insert 2 Ring tabs (2) 3 Posts (2) To remove a 5.25-inch front-panel insert, perform the following steps: 1. Hold the bezel with the front facing you. 2. From the front of the top cover, use your thumbs to press inward on the insert until it snaps free of the cover. To replace a 5.25-inch front-panel insert, position the two ring-tabs over the posts on the inside of the bay opening, and then press the ring tabs over the posts.
  • Page 22 1 Chassis hooks (2) 2 Mounting screw 3 Control panel 4 Control panel cable To remove the control panel, perform the following steps: Remove the hard-disk drive cage. 2. Disconnect the control panel cable from the PANEL connector on the system board (see Figure 14 or the internal service label for the location of the PANEL connector).
  • Page 23 2. Disconnect the DC power and data cables from the back of the drive. 3. Squeeze the retaining tabs that extend from each side of the drive bracket and slide the bracket out of the bay (see Figure 8).    4. Turn the drive assembly upside down and unscrew the four screws that secure the drive to the bracket (see Figure NOTE: For easier access inside the chassis, you may want to rotate the power supply...
  • Page 24 1 "Handle" on bracket 2 Screw securing drive to chassis 4. Slide the drive into the chosen bay of the bracket, orienting it so that the connectors on the back of the drive face the back of the chassis— and the power input connector is closest to the floor of the chassis—when the bracket is reinstalled (see Figure 11).

  • Page 25: System Power Supply

    Then reconnect your computer and peripherals to their electrical outlets, and turn on the peripherals. 6. Insert a bootable diskette (such as the Dell Diagnostics Diskette) into drive A, and turn on the computer system. 7. Enter System Setup and update the Drive 0 option under Primary Drive n.

  • Page 26: System Board Components

    1 Securing tab 2 Power supply 3 Release latch 3. Free the power supply from the securing tab labeled "RELEASE—>, " and rotate it upward until it locks in its extended position. System Power Supply Removal To remove the system power supply, perform the following steps: Rotate the system power supply.

  • Page 27: Expansion Cards

    To change a jumper setting, pull the jumper off its pin(s) and carefully fit it down onto the pin(s) indicated. Dell shipped your computer with a PSWD jumper installed, meaning that the password features for this computer are enabled. When you remove the jumper, or when you install the jumper on only one of the two pins, the password features are disabled.
  • Page 28 Figure 16. Expansion Cards 1 8-bit ISA expansion card 2 16-bit ISA expansion card 3 32-bit PCI expansion card Expansion-Card Removal To remove an expansion card, perform the following steps: Remove the computer cover. 2. Remove the expansion card cage. 3.
  • Page 29 Remove the expansion card cage. 3. If the card-slot opening for the slot you intend to use is covered by a metal filler bracket unscrew and remove the bracket (see Figure 18). Save the screw to use when installing the expansion card later in this procedure. Figure 18.

  • Page 30: Microprocessor/Heat Sink Assembly

    1 Standby power indicator LED (AUX_LED) 2 ISA expansion slot 3 (ISA3) 3 ISA expansion slot 2 (ISA2) 4 ISA expansion slot 1 (ISA1) 5 Remote Wakeup header (WOL) 6 PCI expansion slot 1 (PCI1) 7 PCI expansion slot 2 (PCI2) 8 PCI expansion slot 3 (PCI3) DIMMs Figure 21.

  • Page 31: System Battery

    the microprocessor/heat sink assembly. You must use up to 25 pounds of force to seat the new microprocessor package. Do not rock the package while inserting it into the connector. Replace the computer cover, and reconnect your computer and peripherals to their electrical outlets and turn them on. Figure 23.
  • Page 32 To remove the system board, perform the following steps: Remove the computer cover. 2. Disconnect all cables from their connectors at the back of the computer. 3. Disconnect all cables from the system board. Rotate the system power supply. Remove the DIMMs.
  • Page 33 Chassis Intrusion Switch System Board Overview This section provides procedures for removing and replacing the components, assemblies, and subassemblies in the Dell OptiPlex mini tower chassis GX110 system. Unless otherwise noted, each procedure assumes that the following conditions exist: You have performed the steps in "Precautionary...

  • Page 34: Internal Views

    3. If you are disconnecting a peripheral from the computer or are removing a component from the system board, wait 10 to 20 seconds after disconnecting the computer from AC power before disconnecting the peripheral or removing the component to avoid possible damage to the system board.

  • Page 35: Front Bezel

    To remove the mini tower computer cover, perform the following steps: 1. Face the back of the computer and slide the upper half of the padlock ring to the left to unlock the cover release mechanism (see Figure 3). 2. Face the left side cover and press the left-cover release button (located at the bottom-left corner of the front panel) (see Figure 3). 3.
  • Page 36 1 Tab release 2 Retaining hooks (2) To remove the front bezel, perform the following steps: 1. While pressing the tab release marked with the icon, tilt the bezel away from the chassis. 2. Disengage the two retaining hooks at the bottom of the bezel. 3.

  • Page 37: Control Panel

    Front-Panel Inserts Figure 7.  5.25-Inch Front-Panel Insert Removal 1 Front panel insert 2 Bezel 3 Ring-tab (2) To remove a 5.25-inch front-panel insert, perform the following steps: 1. Hold the bezel with the front facing you. 2. From the front of the bezel, use your thumbs to press inward on the insert until it snaps free of the bezel. To replace a 5.25-inch front-panel insert, position the two ring-tabs over the posts on the inside of the bay opening, and then press the ring-tabs over the posts.

  • Page 38: Chassis Intrusion Switch

    6. Pull out on the control panel to detach it from the chassis. Note the routing of the control panel cable as you remove it from the chassis. Chassis Intrusion Switch Figure 9. Chassis Intrusion Switch  Removal 1 Control panel 2 Control panel cable connector 3 Chassis intrusion cable connector 4 Chassis intrusion switch To remove the chassis intrusion switch, perform the following steps:...
  • Page 39 1 3.5-inch diskette drive 2 5.25-inch drive slots (3) 3 3.5-inch internal bay for hard-disk drives (2) 3.5-Inch Diskette Drive Figure 11. Removing a Diskette Drive From a Drive Bay 1 Release tab To remove the 3.5-inch diskette drive from the drive bay, perform the following steps: 1.
  • Page 40 1 Bracket tabs (2) To remove a 5.25-inch drive from a drive bay, perform the following steps. NOTE: For easier access inside the chassis, you may want to rotate the power supply out of the way temporarily. Remove the front bezel.
  • Page 41 1 5.25-inch drive           NOTICE: You must match the colored strip on the cable with pin 1 on the drive's interface connector to avoid possible damage to your system. 8. Connect a DC power cable to the power input connector on the back of the drive (see Figure 15). Figure 15. 5.25-Inch Drive Cables Attachment 1 DC power cable 2 EIDE interface connector (on drive) 9.
  • Page 42 To remove a hard-disk drive from the mini tower's internal hard-disk drive bracket, perform the following steps. CAUTION: To avoid the possibility of electric shock, turn off the computer and any peripherals, disconnect them from electrical outlets, and then wait at least 5 seconds before you remove the computer cover. Also, before you remove a drive, see the other precautions in "Precautionary Measures."...
  • Page 43 procedure: If you are installing a drive in the 1.6-inch bay, use the four screw holes in the side of the bracket (see Figure 17). If you are installing a drive in the 1-inch bay, use the four screw holes in the bottom of the bracket. 6.

  • Page 44: System Power Supply

    2 GB. 16. Test the hard-disk drive by running the Dell Diagnostics (see the online System User's Guide for complete information. 17. If the drive you just installed is the primary drive, install your operating system on the hard-disk drive.

  • Page 45: Riser Board

    To remove the expansion-card cage, perform the following steps: 1. Examine any cables connected to expansion cards through the back-panel openings and disconnect any cables that will not reach to where the cage must be placed upon removal from the chassis. 2.

  • Page 46: System Board Components

    To change a jumper setting, pull the jumper off its pin(s) and carefully fit it down onto the pin(s) indicated. Dell shipped your computer with a PSWD jumper installed, meaning that password features for this computer system are enabled. When you...

  • Page 47: Expansion Cards

    System Board Labels Table 1 lists the labels for connectors and sockets on your system board and gives a brief description of their functions. Table 1. System Board Connectors and Sockets Connector or Socket Description AUX_LED Auxiliary power indicator Battery socket DIMM socket DIMM_x DSKT...
  • Page 48 6. Replace the computer cover, and reconnect your computer and peripherals to their power sources and turn them on. NOTE: After you remove and replace the cover, the chassis intrusion detector will cause the following message to be displayed at the next system start-up: ALERT! Cover was previously removed.

  • Page 49: Microprocessor/Heat Sink Assembly

    3. Insert the expansion card into the expansion-card connector. If the expansion card is full-length, insert the front end of the card into the corresponding card guide on the inside front of the chassis as you insert the card into its connector. Insert the card's edge connector firmly into the expansion-card slot. 4.
  • Page 50 7. While in System Setup, reset the chassis intrusion detector by pressing the left- or right-arrow key to select  Reset, and then choose   Enabled, Enabled-Silent, or Disabled (see your User's Guide for instructions). 8. Run the Dell Diagnostics to verify that the new microprocessor is operating correctly. System Battery...
  • Page 51 1   Battery 2   Socket CAUTION: There is a danger of the new battery exploding if it is incorrectly installed. Replace the battery only with the same or equivalent type recommended by the manufacturer. Discard used batteries according to the manufacturer's instructions. To remove the system battery, perform the following steps: 1.
  • Page 52 board). Back to Contents Page...
  • Page 53 Drives System Board  Overview This section provides procedures for removing and replacing the components, assemblies, and subassemblies in the Dell OptiPlex small-form- factor chassis GX110 system. Unless otherwise noted, each procedure assumes that the following conditions exist: You have performed the steps in "Precautionary...
  • Page 54 damage to the system board. 4. Wear a wrist grounding strap, and clip it to an unpainted metal surface, such as the padlock loop on the back of the chassis. If a wrist grounding strap is not available, touch any unpainted metal surface on the back of the computer or on the computer chassis, such as the power supply, to discharge any static charge from your body before touching anything inside the computer.  While you work, ...
  • Page 55 1  Padlock ring 2  Securing buttons(2)             To remove the computer cover, perform the following steps: 1. Press in to retract the padlock ring into the cover to open (see Figure 3). 2. Press in on the two securing buttons until the cover is free to swing up (see Figure 3). 3. Raise the back of the cover, and pivot it toward the front of the computer. 4. Lift the cover off the hooks at the front of the chassis. 5.
  • Page 56 1 Diskette eject button 2 Power button To remove the eject and power buttons, perform the following steps: 1. Lay the computer cover on a flat work surface, with the inside of the top cover facing up. 2. To remove the 3.5-inch diskette-drive eject button, pull gently on the plastic part of the button until it comes free. 3.
  • Page 57 1 Control panel 2 Chassis intrusion switch To remove the chassis intrusion switch, perform the following steps: Remove the drive shelf. Remove the power supply. Remove the control panel. 4. Disconnect the chassis intrusion switch cable connector from the control panel. Note the routing of the chassis intrusion cable as you remove the cable from the chassis.
  • Page 58 1 Drive shelf 2 Release tabs (2) To remove the drive shelf from the chassis, perform the following steps: 1. Disconnect the power and interface cables from the diskette drive and CD-ROM drive. 2. Press inward on the two drive shelf release tabs, and pull the shelf forward and out of the chassis (see Figure 9). Hard-Disk Drive Figure 10.
  • Page 59 1 Drive 2 Drive bracket 3 Screws (4) Figure 12. Hard-Disk Drive/Bracket Replacement 1 Tabs on bottom of drive bracket 2 Hooks on chassis floor 3 Drive bracket 4 Release tabs (2) To install a replacement hard-disk drive in the chassis, perform the following steps. CAUTION: To avoid the possibility of electric shock, turn off the computer and any peripherals, disconnect them from electrical outlets, and then wait at least 5 seconds before you remove the computer cover.
  • Page 60 2 GB. 16. Test the hard-disk drive by running the Dell Diagnostics (see the online System User's Guide for complete information). 17. If the drive you just installed is the primary drive, install your operating system on the hard-disk drive.
  • Page 61 3. Ensure that the latch on the left side of the 3.5-inch diskette drive engages the top of the diskette drive. If necessary, press on the latch from the bottom of the drive shelf. 4. Replace the drive shelf and connect the interface and power cable connectors. CD-ROM Drive Figure 14.
  • Page 62 Set the Drive 1 option under Drives: Primary to Auto. See the online System User's Guide for more information. 5. Verify that your system works correctly by running the Dell Diagnostics (see the online System User's Guide for complete information).
  • Page 63 NOTICE: Use a wrist grounding strap as explained in "Precautionary Measures." 2. Examine the cables connected to expansion cards through the back-panel openings, and disconnect any cables that will not reach to where the cage must be placed when it is removed from the chassis. 3.
  • Page 64 To change a jumper setting, pull the jumper off its pin(s) and carefully fit it down onto the pin(s) indicated. Dell shipped your computer with a PSWD jumper installed, meaning that the password features for this computer are enabled. When you remove the jumper, or when you install the jumper on only one of the two pins, the password features are disabled.
  • Page 65 EIDE interface connector IDEn KYBD Keyboard connector MICROPROCESSOR Microprocessor connector MONITOR Video connector MOUSE Mouse connector PANEL Control panel connector PARALLEL Parallel port connector; sometimes referred to as LPT1 POWER_1 Main power input connector POWER_2 3.3-volt (V) power input connector RISER Riser board connector SERIALn...
  • Page 66 Figure 23. Expansion Card Installation 1 Expansion card 2 Card-edge connector 3 Riser board 4 Expansion-card connector 5 Expansion-card cage CAUTION: Use a wrist grounding strap as explained in "Precautionary Measures." CAUTION: Some network cards automatically start up the system when they are connected. To guard against electrical shock, be sure to unplug your computer from its electrical outlet before installing any expansion cards To install an expansion card, perform the following steps:...
  • Page 67 See the User's Guide for detailed information on the chassis intrusion detector. NOTE: If a setup password has been assigned by someone else, contact your network administrator for information on resetting the chassis intrusion detector. DIMMs Figure 25. DIMM Removal 1 Ejectors (2)  ...
  • Page 68 12. While in System Setup, reset the chassis intrusion detector in the Chassis Intrusion option by pressing the left- or right-arrow key to select Reset, and then choose Enabled, Enabled-Silent, or Disabled(see your User's Guide for instructions). 13. Run the Dell Diagnostics to verify that the new microprocessor is operating correctly. System Battery Figure 31.
  • Page 69 1. If possible, enter System Setup and print the System Setup screens. 2. Remove the system battery by carefully prying it out of its socket with your fingers or with a blunt, nonconducting object such as a plastic screwdriver. When you replace the system battery, orient the new battery with the "+" facing up. Insert the battery into its socket and snap it into place. System Board Figure 32.

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