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Dell OptiPlex GX1 Service Manual

Small-form-factor systems
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Contents: Dell OptiPlex GX1 Small-Form-Factor Systems Service Manual
Dell™ OptiPlex™ GX1 Small-Form-Factor Systems Service Manual
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 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, OptiPlex, and the DELL logo 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: Jun 1999
file:///C|/infodev/2013/eDoc/OpGX1/SM/index.htm[2/21/2013 11:45:27 AM]

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  • Page 1 Reproduction in any manner whatsoever without the written permission of Dell Computer Corporation is strictly forbidden. Trademarks used in this text: Dell, OptiPlex, and the DELL logo are trademarks of Dell Computer Corporation; Microsoft, MS- DOS, and Windows NT are registered trademarks of Microsoft Corporation.
  • Page 2 Removing and Replacing Parts: Dell OptiPlex GX1 Systems Service Manual Back to Contents Page Removing and Replacing Parts: Dell™ OptiPlex™ GX1 Small- Form-Factor Systems Service Manual Overview System Power Supply Recommended Tools Riser Board Precautionary Measures System Board Components Internal Views...

  • Page 3: Precautionary Measures

    Removing and Replacing Parts: Dell OptiPlex GX1 Systems Service Manual Precautionary Measures Before you perform any procedures in this manual, take a few moments to read the following caution for your personal safety and to prevent damage to the system from ESD.

  • Page 4: Computer Cover

    Removing and Replacing Parts: Dell OptiPlex GX1 Systems Service Manual Figure 2 shows the chassis with the cover removed. Figure 2. Inside the Chassis 1 CD-ROM drive interface cable 2 Externally accessible upper drive 3 Hard-disk drive 4 Diskette-drive interface cable...
  • Page 5 Removing and Replacing Parts: Dell OptiPlex GX1 Systems Service Manual To remove the computer cover, perform the following steps: 1. Be sure the padlock ring is pushed into the cover. 2. Press in on the two securing buttons until the cover is free to swing up (see Figure 3).
  • Page 6 Removing and Replacing Parts: Dell OptiPlex GX1 Systems Service Manual To replace the computer cover, perform the following steps: 1. Face the front of the computer and hold the cover at a slight angle (see Figure 4). 2. Align the bottom of the cover with the bottom of the chassis and insert the hooks on the cover into the recessed slots on the computer chassis so that the tabs catch the hooks inside the slots.

  • Page 7: Control Panel

    Removing and Replacing Parts: Dell OptiPlex GX1 Systems Service Manual 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.

  • Page 8: Chassis Intrusion Switch

    Removing and Replacing Parts: Dell OptiPlex GX1 Systems Service Manual When you install the replacement control panel, be sure to put the right side of the control panel behind the mounting tab. Chassis Intrusion Switch Figure 7. Chassis Intrusion Switch Removal...
  • Page 9 Removing and Replacing Parts: Dell OptiPlex GX1 Systems Service Manual NOTE: In all of the following procedures, left and right refer to your left and right as you face the front of the computer. Figure 8. Drive Locations 1 Chassis intrusion switch 2 CD-ROM drive 3 3.5-inch diskette drive...
  • Page 10 Removing and Replacing Parts: Dell OptiPlex GX1 Systems Service Manual Figure 9). Hard-Disk Drive Figure 10. Hard-Disk Drive/Bracket Removal 1 Drive bracket 2 Release tabs (2) 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 11 Removing and Replacing Parts: Dell OptiPlex GX1 Systems Service Manual 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.
  • Page 12 Removing and Replacing Parts: Dell OptiPlex GX1 Systems Service Manual Check the documentation for the drive to verify that it is configured for your computer system. 2. If not already done, remove the computer cover. 3. If not already done, remove the drive bracket from the chassis.
  • Page 13 MS-DOS®–based operating systems (including Microsoft® Windows NT®, when using a FAT16 file system) do not support drive partitions larger than 2 GB. 16. Test the hard-disk drive by running the Dell Diagnostics (see the online System User's Guide for complete information).
  • Page 14 Removing and Replacing Parts: Dell OptiPlex GX1 Systems Service Manual To remove the 3.5-inch diskette drive from the drive shelf, perform the following steps. NOTE: This procedure assumes that you have removed the drive shelf from the chassis. 1. Press down on the drive release tab on the top left side of the 3.5-inch diskette drive (see Figure 14).
  • Page 15 Removing and Replacing Parts: Dell OptiPlex GX1 Systems Service Manual 2. Slide the CD-ROM drive assembly forward and up and out of the chassis. To replace a CD-ROM drive, perform the following steps: 1. Align the tabs on the bottom of the CD-ROM drive with the notches on the drive shelf, and slide the drive toward the back of the shelf until it snaps into place (see Figure 16).

  • Page 16: System Power Supply

    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 17: Riser Board

    Removing and Replacing Parts: Dell OptiPlex GX1 Systems Service Manual Figure 19. Expansion-Card Cage Removal 1 Securing lever 2 Expansion-card cage 3 Tabs (2) 4 Hooks (2) To remove the expansion-card cage from the chassis, perform the following steps: Remove the computer cover.

  • Page 18: System Board Components

    Removing and Replacing Parts: Dell OptiPlex GX1 Systems Service Manual 4 PCI expansion slot 2 (PCI2) The chassis has a PCI riser board that has two PCI expansion-card connectors (see Figure 20). To remove the PCI riser board, perform the following steps: 1.
  • Page 19 Removing and Replacing Parts: Dell OptiPlex GX1 Systems Service Manual 1 DIMM sockets (3) 2 3.3-V power connector 3 Battery socket 4 Chassis intrusion switch connector 5 Control panel connector 6 Main power input connector 7 Video-memory upgrade socket 8 Primary EIDE interface connector...
  • Page 20 Removing and Replacing Parts: Dell OptiPlex GX1 Systems Service Manual 20 CD-in connector 21 Microprocessor fan connector 22 Serial port 2 connector 23 USB connectors (2) 24 Mouse/keyboard connector (stacked) 25 Parallel/serial port 1 connector (stacked) System Board Jumpers Figure 22 shows the layout of jumpers on the system board.
  • Page 21 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 22: Expansion Cards

    Removing and Replacing Parts: Dell OptiPlex GX1 Systems Service Manual PANEL Control panel connector PARALLEL Parallel port connector, sometimes referred to as LPT1 PCIn PCI expansion-card connector (on riser board) POWER_1 Main power input connector POWER_2 3.3-V power input connector...
  • Page 23 Removing and Replacing Parts: Dell OptiPlex GX1 Systems Service Manual 4. Remove the screw on the mounting bracket of the card you want to remove. 5. Grasp the card by its outside corners, and ease it out of its connector.
  • Page 24 Removing and Replacing Parts: Dell OptiPlex GX1 Systems Service Manual before installing any expansion cards To install an expansion card, perform the following steps: 1. Prepare the expansion card for installation, and remove the computer cover. See the documentation that came with the expansion card for information on configuring the card, making internal connections, or otherwise customizing it for your system.
  • Page 25 Removing and Replacing Parts: Dell OptiPlex GX1 Systems Service Manual to Not Detected. 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.

  • Page 26: 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 27: System Battery

    8. While in the System Setup program, reset the chassis intrusion detector by changing Chassis Intrusion to Not Detected. 9. Run the Dell Diagnostics to verify that the new microprocessor operates correctly. System Battery Figure 29. System Battery Removal...

  • Page 28: System Board

    Removing and Replacing Parts: Dell OptiPlex GX1 Systems Service Manual 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.
  • Page 29 Removing and Replacing Parts: Dell OptiPlex GX1 Systems Service Manual 8. Carefully lift the system board out of the chassis (be sure to lift evenly and not twist the system board). To replace a system board, perform the following steps: 1.

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