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WLAN module
CAUTION: The WLAN module and the WWAN module are not interchangeable.
Description Spare part number
Atheros 802.11 3x3 a/g/n WiFI Adapter 630435-001
Intel Centrino Ultimate-N 6300 802.11 3x3 a/g/n WiFi Adapter 572511-001
Intel Centrino Advanced N 6205, 2x2 a/b/g/n WiFi Adapter 631954-001
Before removing the WLAN module, follow these steps:
1. Shut down 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 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 48).
5. Remove the service access cover (see
Service access cover on page 50).
Remove the WLAN module:
1. Position the computer upside-down, with the front toward you.
2. Disconnect the WLAN antenna cables (1), (2), and (3) 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 the
computer is equipped with an 802.11a/b/g/n WLAN module, the yellow WLAN antenna cable is
connected to the middle terminal on the WLAN module.
3. Remove the two Phillips M2.5×3.0 screws (4) that secure the WLAN module to the computer.
(The edge of the module opposite the slot rises away from the computer.)
54 Chapter 4 Removal and replacement procedures