4. Disconnect the WLAN antenna cables (1) from the terminals on the WLAN module.
NOTE: The black WLAN antenna cable is connected to the WLAN module “Main” terminal.
The white WLAN antenna cable is connected to the WLAN module “Aux” terminal. If there are
three WLAN antenna cables, the yellow WLAN antenna cable is connected to the WLAN module
“3” (or middle) terminal.
5. Remove the two Phillips PM2.0×4.0 screws (2) that secure the WLAN module to the system
board. (The WLAN module tilts up.)
6. Remove the WLAN module (3) by pulling the module away from the slot at an angle.
NOTE: WLAN modules are designed with a notch (4) to prevent incorrect insertion of the
WLAN module into the WLAN module slot.
Reverse this procedure to install the WLAN module.
WWAN module
Description Spare part number
HSPA WWAN module 574249-001
HSPA EV-DO WWAN module 531993-001
CAUTION: The WWAN module and the WLAN module are not interchangeable.
To prevent an unresponsive system, replace the wireless module only with a wireless module
authorized for use in the computer by the governmental agency that regulates wireless devices in
your country or region. If you replace the module and then receive a warning message, remove the
module to restore device functionality, and then contact technical support.
56 Chapter 4 Removal and replacement procedures ENWW
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General
Weight and Dimensions
