Dell GX400 manual Removing the Computer Cover, Replacing the Computer Cover

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Computer Cover

Dell™ OptiPlex™ GX400 Service Manual

Removing the Computer Cover

Replacing the Computer Cover

Removing the Computer Cover

CAUTION: Before you perform this procedure, see "Precautionary Measures."

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 the back panel.

3.Remove the computer cover.

a. Face the back of the computer and slide the outer padlock ring to the left to unlock the cover release mechanism.

Cover Release Mechanism

b.Press the cover release button located at the bottom-left corner of the front panel.

c.Rotate the bottom of the cover outward, away from the chassis.

d.Lift the cover away from the chassis.

e.Lay the computer down on its right side before you begin working inside the chassis.

Replacing the Computer Cover

1.Check all cable connections and fold cables out of the way so that they do not catch on the computer cover. Ensure that cables are not routed over the drive cage—they will prevent the cover from closing properly.

2.Ensure that no tools or extra parts (including screws) are left inside the computer chassis.

3.Replace the computer cover.

a. Hold the cover at a slight angle. While aligning the top of the cover with the top of the chassis, insert the three hooks on the cover into the three recessed slots on the computer chassis.

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Contents VRM AGP Card Brace Removing the AGP Card BraceReplacing the AGP Card Brace Computer Battery Removing the Computer BatteryReplacing the Computer Battery Before You Begin Precautionary MeasuresRecommended Tools Restarting the ComputerChassis Intrusion Switch Removing the Chassis Intrusion SwitchReplacing the Chassis Intrusion Switch Back to Contents Control Panel ComponentsRemoving the Control Panel Replacing the Control Panel Computer Cover Removing the Computer CoverReplacing the Computer Cover Replacing the Cover Disk Drives and Media Drive LocationRemoving the Floppy Drive Replacing the Floppy Drive Removing a CD, Zip, or Other External Drive Replacing a CD, Zip, or Other External Drive Attaching Drive Cables Removing a Hard Drive Replacing a Hard Drive Attaching Hard-Drive Cables Page Expansion Cards Expansion Card TypesRemoving an Expansion Card Removing an Expansion Card Back to Contents Expansion-Card Guide Removing the Expansion-Card GuideReplacing the Expansion-Card Guide Back to Contents Front Panel Removing the Front PanelReplacing the Front Panel Front-Panel Buttons Removing Front-Panel ButtonsReplacing Front-Panel Buttons Page Front-Panel Inserts Removing Front-Panel InsertsReplacing Front-Panel Inserts Chassis Interior Inside Your ComputerSystem Memory Removing a Memory ModuleReplacing a Memory Module Back to Contents Removing the Microprocessor MicroprocessorReplacing the Microprocessor Back to Contents Microprocessor Cooling Fan Removing the Microprocessor Cooling FanReplacing the Microprocessor Cooling Fan Page Microprocessor Airflow Shroud Removing the Microprocessor Airflow ShroudReplacing the Microprocessor Airflow Shroud Power Supply Rotating the Power SupplyRemoving the Power Supply Replacing the Power Supply Removing the System Board System BoardReplacing the System Board Labels System Board ComponentsJumpers Setting DescriptionBack to Contents Back to Contents Replacing the VRM Removing the VRMBack to Contents