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Dell GX400 manual

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Table of contents for the manual

  • Page 1

    Dell™OptiPlex™GX400ServiceManual Before You Begin Computer Cover Inside Your Computer System Board Components Front Panel Front - Panel Inserts Front - Panel Buttons Power Supply System Memory Disk Drives and Media AGP Card Brace Expansion Cards Expansion - Card Guide Control Panel Chassis Intrusion Switch Microprocessor Airflow [...]

  • Page 2

    Back to Contents Page AGP Card Brace Dell™OptiPlex™GX400ServiceManual  Removing the AGP Card Brace  Replacing the AGP Card Brace Removing the AGP Card Brace To access some components on the board, you may need to remove the AGP card brace. 1.  Turn off the computer and devices, disconnect them from their electrical[...]

  • Page 3

    Back to Contents Page Computer Battery Dell™OptiPlex™GX400ServiceManual  Removing the Computer Battery  Replacing the Computer Battery Removing the Computer Battery 1.  Turn off the computer and peripherals, disconnect them from their electrical outlets, wait at least 5 seconds, and then remove the computer cover .[...]

  • Page 4

    Back to Contents Page Before You Begin Dell™OptiPlex™GX400ServiceManual  Precautionary Measures  Recommended Tools  Restarting the Computer Precautionary Measures Before you remove the computer cover, perform the following steps in the sequence indicated. 1.  Turn off your computer and any devices. 2.  Dis[...]

  • Page 5

    Back to Contents Page Chassis Intrusion Switch Dell™OptiPlex™GX400ServiceManual  Removing the Chassis Intrusion Switch  Replacing the Chassis Intrusion Switch Removing the Chassis Intrusion Switch 1.  Turn off the computer and devices, disconnect them from their electrical outlets, wait at least 5 seconds, and then[...]

  • Page 6

    Back to Contents Page   [...]

  • Page 7

    Back to Contents Page Control Panel Dell™OptiPlex™GX400ServiceManual  Components  Removing the Control Panel  Replacing the Control Panel Components The following figure shows the control panel and the location of its principal connectors and components. Control Panel Components  Removing the Control Panel 1.[...]

  • Page 8

    Replacing the Control Panel To replace the control panel, perform the removal procedure in reverse. Back to Contents Page   [...]

  • Page 9

    Back to Contents Page Computer Cover Dell™OptiPlex™GX400ServiceManual  Removing the Computer Cover  Replacing the Computer Cover Removing the Computer Cover 1.  Turn off the computer and peripherals, and disconnect them from their electrical outlets. 2.  If installed, remove the padlock from the padlock ring on [...]

  • Page 10

    b.  Rotate the cover downward toward the bottom of the chassis. With both hands, press against the bottom edge of the cover to ensure that the securing hooks at the bottom of the cover click into place. Replacing the Cover  c.  Slide the two parts of the padlock ring together to lock the cover release mechanism. Back to Contents Page  ?[...]

  • Page 11

    Back to Contents Page Disk Drives and Media Dell™OptiPlex™GX400ServiceManual  Drive Location  Removing the Floppy Drive  Replacing the Floppy Drive  Removing a CD, Zip, or Other External Drive  Replacing a CD, Zip, or Other External Drive  Removing a Hard Drive  Replacing a Hard Drive [...]

  • Page 12

    5.  Press the green floppy - drive bracket release button and slide the drive assembly out of the chassis. Removing the Floppy - Drive Bracket  6.  Remove the mounting screw. 7.  Rotate the left side of the floppy drive upward and lift it free from the drive bracket. Removing the Floppy Drive from the Bracket  Replacing the Floppy Dr[...]

  • Page 13

    Removing a CD, Zip, or Other External Drive 1.  Turn off the computer and devices, disconnect them from their electrical outlets, wait at least 5 seconds, and then remove the computer cover . 2.  Rotate the power supply away from the system board. 3.  Remove the front panel . 4.  Disconnect the DC power and interface cables from the bac[...]

  • Page 14

    Replacing a CD, Zip, or Other External Drive 1.  Attach the new drive to the drive bracket. Turn the drive upside down, and fit the bracket on the drive so that the screw holes align. To ensure proper installation, all screw holes should be aligned and the tabs on the front of the bracket should be flush with the front of the drive (see " R[...]

  • Page 15

    a.  If you are installing an EIDE device, ensure that the interface cable is properly connected to the EIDE connector on the system board. b.  If you are installing a SCSI device, ensure that the SCSI interface cable is properly connected to the interface connector on the SCSI controller board. 4.  Connect a DC power cable to the power inp[...]

  • Page 16

    Removing a Hard Drive 1.  Turn off the computer and devices, disconnect them from their electrical outlets, wait at least 5 seconds, and then remove the computer cover . 2.  Rotate the power supply away from the system board. 3.  Remove the front panel . 4.  Disconnect the DC power and interface cables from the back of the drive. 5. [...]

  • Page 17

    Replacing a Hard Drive 1.  Slide the drive into one of bracket bays, oriented so that the connectors on the back of the drive will face the interior of the chassis when the bracket is reinstalled. See " Removing a Hard Drive from the Bracket ." 2.  Align the screw hole(s) of the drive and bracket, and secure the drive in the bracket[...]

  • Page 18

    b.  If you are installing a SCSI device, ensure that the SCSI interface cable is properly connected to the interface connector on the SCSI controller board. 5.  Connect a DC power cable to the power input connector on the back of the drive. Attaching Hard - Drive Cables  6.  Ensure that all cables are firmly connected. Fold cables out o[...]

  • Page 19

    [...]

  • Page 20

    Back to Contents Page Expansion Cards Dell™OptiPlex™GX400ServiceManual  Expansion Card Types  Removing an Expansion Card Expansion Card Types l Up to five 32 - bit, 33 - MHz PCI expansion cards. l One 32 - bit AGP card. The expansion slot supports AGP 4x or 2x Pro50 modes operating at 1.5 V. Expansion Card Types  R[...]

  • Page 21

    4.  If necessary, disconnect any cables connected to the card. 5.  Remove the screw that secures the expansion card bracket to the chassis. Save the screw to use when installing the expansion card or filler bracket later in this procedure. 6.  Grasp the card by its top corners and ease it out of its connector. Removing an Expansion Card ?[...]

  • Page 22

    b.  Connect external audio devices to the audio connectors on the back panel. 13.  If you removed an add - in network adapter, perform the following steps: a.  Enter system setup, select Integrated Devices and change the setting for Network Interface Card to On . b.  Connect the network cable to the integrated network adapter connector [...]

  • Page 23

    Back to Contents Page Expansion - Card Guide Dell™OptiPlex™GX400ServiceManual  Removing the Expansion - Card Guide  Replacing the Expansion - Card Guide Removing the Expansion - Card Guide 1.  Turn off the computer and devices, disconnect them from their electrical outlets, wait at least 5 seconds, and then remove [...]

  • Page 24

    Back to Contents Page   [...]

  • Page 25

    Back to Contents Page Front Panel Dell™OptiPlex™GX400ServiceManual  Removing the Front Panel  Replacing the Front Panel Removing the Front Panel 1.  Turn off the computer and devices, disconnect them from their electrical outlets, wait at least 5 seconds, and then remove the computer cover . 2.  Release the fron[...]

  • Page 26

    Back to Contents Page Front - Panel Buttons Dell™OptiPlex™GX400ServiceManual  Removing Front - Panel Buttons  Replacing Front - Panel Buttons Removing Front - Panel Buttons 1.  Turn off the computer and devices, disconnect them from their electrical outlets, wait at least 5 seconds, and then remove the computer cov[...]

  • Page 27

    [...]

  • Page 28

    Back to Contents Page Front - Panel Inserts Dell™OptiPlex™GX400ServiceManual  Removing Front - Panel Inserts  Replacing Front - Panel Inserts Removing Front - Panel Inserts 1.  Turn off the computer and devices, disconnect them from their electrical outlets, wait at least 5 seconds, and then remove the computer cov[...]

  • Page 29

    Back to Contents Page Inside Your Computer Dell™OptiPlex™GX400ServiceManual  Chassis Interior Chassis Interior Chassis Interior  Back to Contents Page    NOTE: Before you remove the cover, you must first slide the outer padlock ring to the left to unlock the cover release mechanism. See " Cover Release Mech[...]

  • Page 30

    Back to Contents Page System Memory Dell™OptiPlex™GX400ServiceManual  Removing a Memory Module  Replacing a Memory Module Removing a Memory Module 1.  Turn off the computer and devices, disconnect them from their electrical outlets, wait at least 5 seconds, and then remove the computer cover . 2.  Lay the comput[...]

  • Page 31

    2.  Rotate the power supply back into position until the securing tab snaps into the release latch. 3.  Stand the computer upright. 4.  Replace the computer cover and restart the computer . The computer detects that the new memory does not match the existing configuration information and generates the following message: The amount of syste[...]

  • Page 32

    Back to Contents Page Microprocessor Dell™OptiPlex™GX400ServiceManual  Removing the Microprocessor  Replacing the Microprocessor Removing the Microprocessor 1.  Turn off the computer and devices, disconnect them from their electrical outlets, wait at least 5 seconds, and then remove the computer cover . 2.  Lay [...]

  • Page 33

    To remove the microprocessor, pull the socket lever straight up until the microprocessor is released. Then remove the microprocessor from the socket. Removing the Microprocessor  Replacing the Microprocessor 1.  Install the new microprocessor in the socket: a.  Remove the plastic cover that is attached to the bottom of the new heat sink as[...]

  • Page 34

    2.  Install the microprocessor heat sink: a.  Lower the heat sink to the microprocessor so that the heat sink fits in the heat sink retention base. b.  For each of the replacement metal clips that secure the heat sink to the microprocessor, fit the end of the clip that does not have the latch to the heat sink retention base. Then, press do[...]

  • Page 35

    Back to Contents Page Microprocessor Cooling Fan Dell™OptiPlex™GX400ServiceManual  Removing the Microprocessor Cooling Fan  Replacing the Microprocessor Cooling Fan Removing the Microprocessor Cooling Fan 1.  Turn off the computer and devices, disconnect them from their electrical outlets, wait at least 5 seconds, [...]

  • Page 36

      [...]

  • Page 37

    Back to Contents Page Microprocessor Airflow Shroud Dell™OptiPlex™GX400ServiceManual  Removing the Microprocessor Airflow Shroud  Replacing the Microprocessor Airflow Shroud Removing the Microprocessor Airflow Shroud 1.  Turn off the computer and devices, disconnect them from their electrical outlets, wait at least[...]

  • Page 38

    Back to Contents Page Power Supply Dell™OptiPlex™GX400ServiceManual  Rotating the Power Supply  Removing the Power Supply  Replacing the Power Supply Rotating the Power Supply To access some of the components on the system board, you may need to rotate the power supply out of the way. 1.  Turn off the compute[...]

  • Page 39

    7.  Disengage the pivot pin on the left rear of the power supply from the chassis socket. Removing the Power Supply  8.  Lift the power supply away from the chassis. Replacing the Power Supply 1.  Insert the pivot pin on the left rear of the power supply into the chassis socket. 2.  Insert the retention arm pin on the left side of th[...]

  • Page 40

    Back to Contents Page System Board Dell™OptiPlex™GX400ServiceManual  Removing the System Board  Replacing the System Board Removing the System Board 1.  Turn off the computer and devices, disconnect them from their electrical outlets, wait at least 5 seconds, and then remove the computer cover . 2.  Lay the comp[...]

  • Page 41

    Replacing the System Board 1.  Lower the system board into the chassis at an angle, with the I/O panel connectors lowered into the chassis. 2.  Carefully push down evenly on both sides of the system board to engage the grounding clips onto their respective chassis tabs. 3.  Slide the system board toward the rear of the chassis until it sto[...]

  • Page 42

    Back to Contents Page System Board Components Dell™OptiPlex™GX400ServiceManual  Components  Labels  Jumpers Components System Board Components  Labels  System - BoardLabels Connector or Component Label AGP AGP connector AUX_LED Auxiliary hard - drive access light connector BATTERY Battery socket CD_I[...]

  • Page 43

    Jumpers System Board Jumpers  To change a jumper setting, pull the plug off its pin(s) and carefully fit it down onto the pin(s) indicated. The following table lists the system board jumpers and their settings.  L_IN Line - in connector L_OUT Line - out/speaker connector MIC Microphone connector MICROPROCESSOR Microprocessor with heat sink MS[...]

  • Page 44

    Back to Contents Page   [...]

  • Page 45

    Back to Contents Page Dell™OptiPlex™GX400ServiceManual  Notes, Notices, and Cautions Notes, Notices, and Cautions Back to Contents Page    NOTE: A NOTE indicates important information that helps you make better use of your computer. NOTICE: A NOTICE indicates either potential damage to hardware or loss of data and [...]

  • Page 46

    Back to Contents Page VRM Dell™OptiPlex™GX400ServiceManual  Removing the VRM  Replacing the VRM Removing the VRM 1.  Turn off the computer and devices, disconnect them from their electrical outlets, wait at least 5 seconds, and then remove the computer cover . 2.  Rotate the power supply away from the system boa[...]

  • Page 47

    Back to Contents Page   [...]