WLAN module
Description Spare part number
Qualcomm Atheros AR9485 802.11 b/g/n 1x1 WiFi Adaptor (select models only) 675794-001
Broadcom BCM4352 802.11ac 2x2 Wi-Fi + Bluetooth 4.0 combo (select models only) 724935-001
Broadcom BCM943228HMB WiDi 802.11 a/b/g/n 2x2 Wi-Fi + Bluetooth 4.0 combo (select models only) 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 service door (see
Service door on page 47).
5. Remove the battery (see
Battery on page 49).
Remove the WLAN module:
1. 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”. If
the computer is equipped with an 802.11a/b/g/n WLAN module, the yellow WLAN antenna cable
connects to the middle terminal on the WLAN module.
2. Remove the two Phillips PM2.0×3.0 screws (2) that secure the WLAN module to the base enclosure.
(The WLAN module tilts up.)
56 Chapter 5 Removal and replacement procedures for Customer Self-Repair parts ENWW
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