Dell C521 specifications Installing the Front I/O Panel, Removing the Fan Assembly

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6.Disconnect the cable attached to the front I/O panel.

7.Remove the screw that secures the front I/O panel to the chassis.

8.Rotate the I/O panel toward the back of the computer and remove and the I/O panel from the computer.

1

securing tab

2

screw

3

I/O panel bracket

 

 

 

 

 

 

4

I/O panel

5

front panel openings

 

 

 

 

 

 

 

 

Installing the Front I/O Panel

1.Align the I/O panel connectors and lights with the openings in the front panel.

2.Rotate the I/O panel toward the front panel so that the I/O panel bracket aligns with the securing tab.

3.Install the screw that secures the I/O panel to the chassis.

4.Reconnect the cable to the I/O panel.

5.Rotate the heat sink assembly down towards the computer base and ensure that the two captive screws are properly aligned with the holes in the system board.

6.Tighten the two captive screws to secure the heat sink assembly to the system board.

7.Replace the computer cover. See Replacing the Computer Cover.

8.Connect your computer and devices to electrical outlets, and turn them on.

Fan Assembly

CAUTION: Before you begin any of the procedures in this section, follow the safety instructions in the Product Information Guide.

Removing the Fan Assembly

1.Follow the procedures in Before You Begin.

2.Remove the computer cover. See Removing the Computer Cover.

3.Remove the front I/O panel. See Removing the Front I/O Panel.

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Contents September 2006 Rev. A00 Front View About Your ComputerBack View of the Computer Back Panel I/O ConnectorsBack to Contents Getting Started Before You BeginRecommended Tools Turning Off Your ComputerPage Replacing the Computer Cover Removing the Computer Cover DDR2 Memory Overview Removing and Installing PartsMemory Installing Memory Removing Memory CardsInstalling an Expansion Card Removing an Expansion Card Drives Drive Interface Connectors General Installation GuidelinesPower Cable Connector Connecting and Disconnecting Drive CablesRemoving a CD/DVD Drive Installing a CD/DVD DriveCD/DVD Drive Removing a Floppy Drive Floppy DriveInstalling a Floppy Drive Removing a Media Card Reader Media Card ReaderInstalling a Media Card Reader Removing a Hard Drive Hard DriveInstalling a Hard Drive Replacing the Battery BatteryRemoving the Processor ProcessorInstalling the Processor Page Replacing the Power Supply Power SupplyRemoving the Front I/O Panel Front I/O PanelRemoving the Fan Assembly Fan AssemblyInstalling the Front I/O Panel Removing the System Board Installing the Fan AssemblySystem Board Replacing the System Board Page Specifications Controls and Lights ConnectorsDrives Environmental PowerPhysical Entering System Setup System SetupOverview OverviewSystem System Setup Options64MB Post Behavior Boot MenuJumper Locations Clearing Password Settings Clearing Forgotten Passwords and Cmos SettingsClearing Cmos Settings Flashing the BiosSystem Board Components Technical OverviewInside View of Your Computer Jumper Setting Description Jumper SettingsPin Number Signal name AWG Wire Power Supply DC Connector Pin AssignmentsDC Power Connector P1 DC Power Connector P3 DC Power Connector P2DC Power Connector P4 DC Power Connector P5 and P6Black +12 VDC Yellow September 2006 Rev. A00 Dell Diagnostics TroubleshootingWhen to Use the Dell Diagnostics Dell Diagnostics Main MenuPower Light Problem Description Suggested Resolution Diagnostic LightsProblem Description Suggested Resolution System LightsCode Cause Beep Codes