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.
Removing and Replacing Parts: Dell OptiPlex GX1 Systems Service Manual Back to Contents Page Removing and Replacing Parts: Dell™ OptiPlex™ GX1 SmallForm-Factor Systems Service Manual Overview System Power Supply Recommended Tools Riser Board Precautionary Measures System Board Components Internal Views Expansion-Card Cage Computer Cover Expansion Cards Eject and Power Buttons DIMMs Control Panel Microprocessor/Heat Sink Assembly Chassis Intrusion Switch System Battery Drives System Board
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. CAUTION: FOR YOUR PERSONAL SAFETY AND PROTECTION OF THE EQUIPMENT Before you start to work on the system, perform the following steps in the sequence listed: 1. Turn off the computer and all peripherals. 2.
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 bay 3 Hard-disk drive 4 Diskette-drive interface cable 5 Hard-disk drive interface cable 6 Expansion-card cage 7 System board 8 Expansion-card slots 9 I/O ports and connectors 10 AC power receptacle 11 Security cable slot 12 Power supply 13 Chassis intrusion switch Computer Cover Figure 3.
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). 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. Disengage the tabs that secure the cover to the top of the chassis, and lift the cover away.
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. 3. Pivot the cover down toward the back of the chassis and into position.
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. 3. To remove the power button, use a small screwdriver and push in the two plastic clips that hold the button to the bezel. When these clips are released, the button and the spring come free from the bezel.
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 1 Control panel 2 Chassis intrusion switch To remove the chassis intrusion switch, perform the following steps: 1. Remove the drive shelf. 2. Remove the power supply. 3. Remove the control panel. 4.
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 4 Hard-disk drive Preliminary Steps You must remove the drive shelf before removing the 3.5-inch diskette drive, the CD-ROM drive, the harddisk drive, the control panel, the chassis intrusion switch, or the power supply.
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. Also, before you remove a drive, see the other precautions in "Precautionary Measures.
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.
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. 4. Attach the new hard-disk drive to the bracket with the four screws you removed in step 8 of the previous procedure. 5. Reinstall the hard-disk drive/bracket in the chassis (see Figure 12). 6.
Removing and Replacing Parts: Dell OptiPlex GX1 Systems Service Manual To locate the IDE1 connector on the system board, see "System Board Components." 10. Replace the drive shelf and connect the diskette and CD-ROM drive power and interface cables. 11. Replace the computer cover. Then reconnect your computer and peripherals to their electrical outlets, and turn them on. 12. Insert a bootable diskette into drive A. 13. Turn on the computer system. 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). The 3.5-inch diskette drive will pop up slightly when the tab disengages. 2. Pivot the 3.5-inch diskette drive up and out of the drive shelf.
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). Figure 16. CD-ROM Drive Replacement 1 Tabs (2) 2 Notches (2) 2.
Removing and Replacing Parts: Dell OptiPlex GX1 Systems Service Manual 4. Update your system configuration information. 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). System Power Supply Figure 18.
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: 1. Remove the computer cover. NOTICE: Use a wrist grounding strap as explained in "Precautionary Measures." 2.
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. Remove the expansion-card cage. 2. Remove the expansion cards installed in the slots. 3. Remove the screws securing the riser board to the expansion-card cage. 4. Lift the riser board off the expansion card cage.
Removing and Replacing Parts: Dell OptiPlex GX1 Systems Service Manual 1 DIMM sockets (3) 2 3.
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. Figure 22. System Board Jumpers Table 1 lists the system-board jumper settings, and it gives a brief description of their functions. Table 1.
Removing and Replacing Parts: Dell OptiPlex GX1 Systems Service Manual jumpered unjumpered Jumper pins are small groups of two or more pins on a circuit board. Plastic jumpers containing a wire fit down over the pins. The wire connects the pins and creates a circuit. NOTICE: Make sure that your system is turned off before you change a jumper setting. Otherwise, damage to your system or unpredictable results may occur.
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.
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. 6. 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.
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. 2.
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. DIMMs Figure 26. DIMM Removal 1 Ejectors (2) CAUTION: Use a wrist grounding strap as explained in "Precautionary Measures." To remove a DIMM, perform the following steps: 1.
Removing and Replacing Parts: Dell OptiPlex GX1 Systems Service Manual Microprocessor/Heat Sink Assembly Figure 28. Microprocessor/Heat Sink Assembly Removal 1 2 3 4 Microprocessor fan Guide bracket assembly Guide-bracket assembly latch Microprocessor/heat sink assembly CAUTION: The microprocessor SEC cartridge/heat sink assembly can get extremely hot. Be sure that the assembly has had sufficient time to cool before you touch it.
Removing and Replacing Parts: Dell OptiPlex GX1 Systems Service Manual 3. Unplug the fan power connector on the system board 4. Gently pull out the guide-bracket assembly latch (see Figure 28), grasp the microprocessor/heat sink assembly firmly, and pull straight up to remove it from the guide bracket assembly. You must use up to 15 pounds of force to disengage the microprocessor from the connector. Do not rock the microprocessor while removing it. 5.
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. To remove the system battery, perform the following steps: 1. If possible, enter the System Setup program and print the System Setup screens. 2.
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. Remove the DIMMs, the video memory upgrade module (if present), and the microprocessor/heat sink assembly and install them on the replacement board. 2.