Dell 1420, 1400 service manual Replacing the System Board

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IO panel connector

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speaker connector

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system board

 

 

 

 

 

 

18.Take out the system board and keep it aside.

19.Disconnect the modem cable from the system board.

20.With the rear of the computer facing you, gently lift the system board assembly from the left side, then slide the system board assembly to the left and lift up on the right side to raise the assembly out of the computer.

NOTE: It may be necessary to press outward slightly on the plastic around the connectors on the left side of the computer to lift the system board and remove it.

Replacing the System Board

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

NOTICE: To avoid electrostatic discharge, ground yourself by using a wrist grounding strap or by periodically touching an unpainted metal surface, such as the back panel on the computer.

1.Follow the instructions in Before You Begin.

2.Follow the instructions in Removing the System Board.

3.For replacement of the system board, perform the steps in Removing the System Board in reverse order.

NOTICE: Before turning on the computer, replace all screws and ensure that no stray screws remain inside the computer. Failure to do so may result in damage to the computer.

4. Turn on the computer.

NOTE: After replacing the system board, enter the computer's alpha-numeric Service Tag into the BIOS of the replacement system board.

5.Insert the floppy disk or CD that accompanied the replacement system board into the appropriate drive. Follow the instructions that appear on the screen.

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Contents Dell Inspiron 1420/Dell Vostro Before You Begin Recommended ToolsTurning Off Your Computer Before Working Inside Your ComputerBack to Contents Flashing the Bios Dell Bios Flash window, click ContinueInternal Card With Bluetooth Wireless Technology Camera Module Removing and Replacing the Camera ModuleReplacing the Coin-Cell Battery Coin-Cell BatteryRemoving the Coin-Cell Battery Back to Contents Microprocessor Module Removing the Microprocessor ModuleReplacing the Microprocessor Module Back to Contents Replacing the Microprocessor Thermal-Cooling Assembly Microprocessor Thermal-Cooling AssemblyRemoving the Microprocessor Thermal-Cooling Assembly Follow the instructions in Before You Begin Removing the Display Assembly DisplayReplacing the Display Assembly Follow the instructions in Removing the Display AssemblyRemoving the Display Bezel Replacing the Display Bezel Removing the Display PanelReplacing the Display Panel Back to Contents Replacing the Fan FanRemoving the Fan Back to Contents Replacing the FCM Intel Turbo MemoryRemoving the FCM Back to Contents Hard Drive Removing the Hard DriveReplacing the Hard Drive Replacing the Keyboard Cover Keyboard CoverRemoving the Keyboard Cover Replacing the Keyboard KeyboardRemoving the Keyboard Back to Contents Memory Removing the Memory ModuleReplacing the Memory Module Communication Cards Removing a Wlan CardReplacing a Wlan Card Removing a Mobile Broadband or Wwan CardReplacing a Wwan Card Modem Removing and Replacing the ModemReplacing the Optical Drive Optical DriveRemoving the Optical Drive Palm Rest Removing the Palm RestReplacing the Palm Rest Back to Contents Pin Assignments for I/O Connectors USB ConnectorVideo Connector Video TV-Out ConnectorIeee 1394 Connector Replacing the Speakers SpeakersRemoving the Speakers Back to Contents System Board Removing the System BoardReplacing the System Board Dell Inspiron 1420/Dell Vostro