R939H.pdf

Replacing the System Board

About Warnings

WARNING: A WARNING indicates a potential for property damage, personal injury, or death.

Setting the AMT Manageability Mode

NOTE: For Dell™ Latitude™ E5400 and E5500 computers, and for Dell Precision™ M6400 Mobile Workstations, skip this section and see "Programming the Service Tag" on page 3.

WARNING: Before you begin any of the procedures in this section, read the safety information that shipped with your computer. For additional safety best practices, see the Regulatory Compliance Homepage at www.dell.com/regulatory_compliance .

WARNING: If you need to remove the bottom access panel, first disconnect the AC adapter and modem cables from all electrical outlets.

CAUTION: Follow the instructions carefully to ensure that you configure the computer for the correct management mode.

• 1 Remove the bottom access panel (see your Service Manual ).
• 2 Take note of the label that is attached to the inside of the bottom access panel.

You should see one of the following four configuration-mode labels on the inside of the chassis:

NOTE: If the original configuration-mode label is missing, damaged, or otherwise illegible, contact Dell to obtain your configuration-mode number (see your computer documentation for contact information).

• 3 Replace the bottom access panel.

NOTE: For information on replacing the system board, see "Replacing the System Board" in your Service Manual .

• 4 Disconnect the network cable, if applicable, and the mass storage devices like hard drives or USB flash keys.
• 5 Connect the AC adapter and turn on the computer.
• An initialization screen is displayed. The green text on the initialization screen prompts you to select the appropriate configuration for your computer.

CAUTION: Ensure that you use the correct configuration-mode number. Once you have selected a configuration, you cannot change the management mode as this process is not reversible. If you make the wrong selection, your computer may not operate as it should.

• 6 Enter the configuration-mode number that you obtained from the label inside the bottom access panel.
• 7 If this is the correct configuration-mode number, select Y at the prompt. Once the initialization is complete, the computer shuts down.
• 8 Reconnect the network cable and the mass storage devices like hard drives or USB flash keys.
• 9 Restart the computer.

Programming the Service Tag

After replacing the system board for Latitude E5400, E5500, and Dell Precision M6400 Mobile