Replacing the keyboard – Dell LATITUDE D400 User Manual
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8. If a modem is not already installed, go to
. If you are replacing a modem, remove the existing modem:
a. Remove the screw securing the modem to the system board, and set it aside.
b. Pull straight up on the attached pull-tab to lift the modem out of its connector on the system board, and
disconnect the modem cable.
9. Connect the modem cable to the modem.
NOTICE:
The cable connectors are keyed for correct insertion; do not force the connections.
10. Align the modem with the screw hole, and press the modem into the connector on the system board.
11. Install the screw to secure the modem to the system board.
12. Replace the modem cover.
Replacing the Keyboard
CAUTION:
Before working inside your computer, read the safety instructions in your System Information
Guide.
1. Ensure that the work surface is flat and clean to prevent scratching the computer cover.
2. Save and close any open files, exit any open programs, and then shut down the computer.
3. If the computer is connected to a docking device (docked), undock it. See the documentation that came with your
docking device for instructions.
4. Disconnect the computer from the electrical outlet.
5. Wait 10 to 20 seconds, and then disconnect any attached devices.
6. Remove any installed PC Cards and the battery.
NOTICE:
Handle components and cards by their edges, and avoid touching pins and contacts. Ground yourself by
touching a metal connector on the back of the computer. Continue to ground yourself periodically during this
procedure.