Dell Dimension XPS T___ User Manual download pdf (Page 27)

9. Lift the system board from the three plastic standoffs that secure the system board to the chassis.

10. Carefully lift the system board out from the I/O gasket (see System Board), and remove the board from the computer.

11. Remove the mounting bracket from the back of the system board as shown in the following figure.

Before you install a replacement system board, perform the following steps:

1. Install the guide bracket assembly for the SECC2 package. (The assembly is keyed for correct insertion.)

2. Install the SECC2 package and heat sink assembly.

3. Transfer the DIMMs to the new system board.

When you install a replacement system board, angle the back of the board downward and carefully align the connectors on the back edge of the

board with the cutouts in the I/O gasket (see System Board). When properly aligned, the board connectors slide into the I/O gasket as you lower

the board into position in the chassis and reseat it on the three plastic standoffs. Replace the system-board mounting screw.

After you install the replacement system board, replace the expansion cards that you removed from the old system board.

When you reconnect the cables to a system board with integrated sound, connect the CD-ROM drive audio cable to the connector nearest the

back edge of the system board. The middle audio connector may be used with a modem.

Toconfigurethesystemafteryouinstallareplacementboard,performthefollowingsteps:

1. Install the jumper plug on pins 2 and 3 of configuration jumper J8A1 to select Maintenance mode.

2. Replace the cover and support beam, and boot the system.

System board-mounting bracket

Mounting screw

NOTE: You may need to slide the board toward the front of the computer to clear the hooked standoffs before you can lift the board from

the computer.

System board-mounting bracket

System board

NOTE: The system-board mounting screw pulls the board against the I/O gasket to prevent electromagnetic interference (EMI) leakage.

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Dell Dimension XPS T___ User Manual Page 27