Dell OptiPlex GX400 User's Guide

Dell™OptiPlex™GX400ServiceManual Before You Begin Computer Cover Inside Your Computer System Board Components Front Panel Front-Panel Inserts Fro

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 securin

Back to Contents Page Disk Drives and Media Dell™OptiPlex™GX400ServiceManual Drive Location Removing the Floppy Drive Replacing the Flo

5. Press the green floppy-drive bracket release button and slide the drive assembly out of the chassis. Removing the Floppy-Drive Bracket  6. 

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 se

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 th

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 yo

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

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 interio

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

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Back to Contents Page AGP Card Brace Dell™OptiPlex™GX400ServiceManual Removing the AGP Card Brace Replacing the AGP Card Brace Removing t

Back to Contents Page Expansion Cards Dell™OptiPlex™GX400ServiceManual Expansion Card Types Removing an Expansion Card Expansion Card Typ

4. If necessary, disconnect any cables connected to the card. 5. Remove the screw that secures the expansion card bracket to the chassis. Save

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 s

Back to Contents Page Expansion-Card Guide Dell™OptiPlex™GX400ServiceManual Removing the Expansion-Card Guide Replacing the Expansion-Card

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Back to Contents Page Front Panel Dell™OptiPlex™GX400ServiceManual Removing the Front Panel Replacing the Front Panel Removing the Front

Back to Contents Page Front-Panel Buttons Dell™OptiPlex™GX400ServiceManual Removing Front-Panel Buttons Replacing Front-Panel Buttons Rem

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Back to Contents Page Front-Panel Inserts Dell™OptiPlex™GX400ServiceManual Removing Front-Panel Inserts Replacing Front-Panel Inserts Rem

Back to Contents Page Inside Your Computer Dell™OptiPlex™GX400ServiceManual Chassis Interior Chassis Interior Chassis Interior  Back to

Back to Contents Page Computer Battery Dell™OptiPlex™GX400ServiceManual Removing the Computer Battery Replacing the Computer Battery Remo

Back to Contents Page System Memory Dell™OptiPlex™GX400ServiceManual Removing a Memory Module Replacing a Memory Module Removing a Memory

2. Rotate the power supply back into position until the securing tab snaps into the release latch. 3. Stand the computer upright. 4. Replace

Back to Contents Page Microprocessor Dell™OptiPlex™GX400ServiceManual Removing the Microprocessor Replacing the Microprocessor Removing t

To remove the microprocessor, pull the socket lever straight up until the microprocessor is released. Then remove the microprocessor from the socket.

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

Back to Contents Page Microprocessor Cooling Fan Dell™OptiPlex™GX400ServiceManual Removing the Microprocessor Cooling Fan Replacing the Mi

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Back to Contents Page Microprocessor Airflow Shroud Dell™OptiPlex™GX400ServiceManual Removing the Microprocessor Airflow Shroud Replacing

Back to Contents Page Power Supply Dell™OptiPlex™GX400ServiceManual Rotating the Power Supply Removing the Power Supply Replacing the P

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 a

Back to Contents Page Before You Begin Dell™OptiPlex™GX400ServiceManual Precautionary Measures Recommended Tools Restarting the Compute

Back to Contents Page System Board Dell™OptiPlex™GX400ServiceManual Removing the System Board Replacing the System Board Removing the Sys

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. C

Back to Contents Page System Board Components Dell™OptiPlex™GX400ServiceManual Components Labels Jumpers Components System Board Comp

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 f

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Back to Contents Page Dell™OptiPlex™GX400ServiceManual Notes, Notices, and Cautions Notes, Notices, and Cautions Back to Contents Page   

Back to Contents Page VRM Dell™OptiPlex™GX400ServiceManual Removing the VRM Replacing the VRM Removing the VRM 1. Turn off the computer

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Back to Contents Page Chassis Intrusion Switch Dell™OptiPlex™GX400ServiceManual Removing the Chassis Intrusion Switch Replacing the Chassi

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Back to Contents Page Control Panel Dell™OptiPlex™GX400ServiceManual Components Removing the Control Panel Replacing the Control Panel

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

Back to Contents Page Computer Cover Dell™OptiPlex™GX400ServiceManual Removing the Computer Cover Replacing the Computer Cover Removing t