Dell Latitude LM Service Manual page 68

4. Remove heat sink screws S3 and S4.
Lift off the heat sink.
CAUTION: Lift away the heat sink gently. Rough handling could
damage the thermal pad on the bottom of the heat sink.
5. Disconnect the keyboard cable from the main board.
Use a small flat-blade screwdriver to release the ZIF connector securing the
keyboard cable.
CAUTION: Lift away the cable only after the ZIF connector is
opened (see "ZIF Connectors" found earlier in this chapter). Pulling
the cable from the connector damages the conductive coating on the
end of the cable.
6. Remove the keyboard from the computer.
Removing and Replacing Parts 4-31