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 device 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 through Help and Support.
Before removing the WLAN module, follow these steps:
1.Shut down the device. If you are unsure whether the device is off or in Hibernation, turn the device on, and then shut it down through the operating system.
2.Disconnect all external devices connected to the device.
3.Disconnect the power from the device by first unplugging the power cord from the AC outlet and then unplugging the AC adapter from the device.
4.Remove the battery (see Battery on page 44).
5.If your device has WWAN capability, remove the SIM (see SIM on page 45).
6.Remove the following components:
a.Keyboard (see Keyboard on page 48)
b.Hard drive or
c.Top cover (see Top cover on page 57)
Remove the WLAN module:
1.Remove the 2 Phillips PM2.0×4.0 screws (1) that secure the WLAN module to the system board. (The edge of the module opposite the slot rises away from the device.)
2.Disconnect the wireless antenna cables (2) from the terminals on the WLAN module.
3.Remove the WLAN module (3) by pulling the module away from the slot at an angle.
Reverse this procedure to install the WLAN module.
Component replacement procedures 61