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WLAN module
Description Spare part number
Atheros AR9462 802.11 a/b/g/n 2x2 Bluetooth 4.0 combo adapter, HMC 676786-005
IMPORTANT: Make special note of each screw and screw lock size and location during removal
and replacement.
CAUTION: 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.
Before removing the WLAN module, follow these steps:
1. Shut down the computer.
2. Disconnect all external devices connected to the computer.
3. Disconnect the power from the computer by first unplugging the power cord from the AC outlet
and then unplugging the AC adapter from the computer.
4. Remove the battery (see
Battery on page 20).
5. Remove the keyboard (see
Keyboard on page 24).
6. Remove the top cover (see
Top cover on page 28).
Remove the WLAN module:
1. Disconnect the WLAN antenna cables (1) from the terminals on the WLAN module.
NOTE: The 1/black WLAN antenna cable is connected to the WLAN module 1/Main terminal.
The 2/white WLAN antenna cable is connected to the WLAN module 2/Aux terminal.
Component replacement procedures 35