Dell XPS 420 owner manual Removing the System Board, 157

book.book Page 157 Tuesday, November 27, 2007 10:29 AM

9Close the computer cover (see "Replacing the Computer Cover" on page 172).

NOTICE: To connect a network cable, first plug the cable into the network port or device and then plug it into the computer.

10Connect your computer and devices to electrical outlets, and turn them on.

System Board

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

Removing the System Board

NOTICE: The system board and metal tray are connected and are removed as one piece.

1Follow the procedures in "Before You Begin" on page 99.

2Remove the computer cover (see "Removing the Computer Cover" on page 101).

3Remove any full-length expansion cards (see "Removing a PCI Card" on page 114 and "Removing a PCI Express Card" on page 121).

4Remove the two screws securing the card fan assembly, then remove the processor airflow shroud (see "Removing the Processor Airflow Shroud Assembly" on page 148) and the Processor fan assembly (see "Removing the Processor Fan Cage" on page 149 and "Removing the Processor Fan" on page 151).

5Remove the card fan assembly (see "Removing the Card Fan" on page 152).

6Remove any additional components that may restrict access to the system board.

7Disconnect all cables from the system board.

NOTICE: If you are replacing the system board, visually compare the replacement system board to the existing system board to make sure that you have the correct part.

8Remove the eight screws securing the system board assembly to the chassis, slide the system board assembly towards the front of the computer and lift it up and out.

Removing and Installing Parts

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