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System Board

Dell™ Inspiron™ 1420/Dell Vostro™ 1400 Service Manual

  Removing the System Board

  Replacing the System Board

Removing 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.

The system board's BIOS chip contains the Service Tag, which is also visible on a barcode label on the bottom of the computer. The replacement kit for the system board includes a CD that provides a utility for transferring the Service Tag to the replacement system board.

1. Follow the instructions in Before You Begin.
   
   
2. Remove the hard drive (see Removing the Hard Drive).
   
   
3. Remove the optical drive (see Removing the Optical Drive).
   
   
4. Remove the WLAN card, if applicable (see Removing a WLAN Card).
   
   
5. Remove the WWAN card, if applicable (see Removing a Mobile Broadband or WWAN Card).
   
   
6. Remove the Flash Cache Module, if applicable (see Removing the FCM).
   
   
7. Remove the modem, if applicable (see Modem).
   
   
8. Remove the internal card with Bluetooth Wireless technology, if applicable (see Removing and Replacing Internal Card With Bluetooth® Wireless Technology).
   
   
9. Disconnect the cable for the internal card with Bluetooth Wireless technology from the system board.
   
   
10. Remove the keyboard cover (see Removing the Keyboard Cover).
    
    
11. Remove the keyboard (see Removing the Keyboard).
    
    
12. Remove the display assembly (see Removing the Display Assembly).
    
    
13. Remove all memory modules (see Removing the Memory Module).
    
    
14. Remove the microprocessor thermal-cooling assembly (see Removing the Microprocessor Thermal-Cooling Assembly).
    
    
15. Remove the microprocessor module (see Removing the Microprocessor Module).
    
    
16. Remove the palm rest (see Removing the Palm Rest).
    
    
17. Remove the IO panel and speaker connectors from the system board.
    
    

1

IO panel connector

2

speaker connector

3

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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