WLAN module
Description Spare part number
Atheros 802.11 b/g/n 1×1 + Bluetooth 4.0 Combo Adapter 690019-001
Broadcom 802.11 a/b/g/n 2×2 + Bluetooth 4.0 Combo Adapter 730668-001
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. Turn off the computer. If you are unsure whether the computer is off or in Hibernation, turn the
computer on, and then shut it down through the operating system.
2. Disconnect the power from the computer by unplugging the power cord from the computer.
3. Disconnect all external devices from the computer.
4. Remove the battery (see
Battery on page 32).
5. Remove the service door (see
Service door on page 33).
6. If there is a WWAN module, remove the WWAN module (see
WWAN module on page 38).
Remove the WLAN module:
1. Turn the computer upside down on a flat surface, with the battery bay toward you.
2. Disconnect the WLAN antenna cables (1) from the terminals on the WLAN module.
NOTE: The WLAN antenna cable labeled “1” connects to the WLAN module “Main” terminal
labeled “1”. The WLAN antenna cable labeled “2” connects to the WLAN module “Aux” terminal
labeled “2”.
3. Remove the two Phillips screws (2) that secure the WLAN module to the system board,
4. If there is a WLAN bracket, remove the WLAN bracket (3). (The WLAN bracket is part of the
Plastics Kit, spare part number 738402-001.)
40 Chapter 5 Removal and replacement procedures for Customer Self-Repair parts
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