4–18 Maintenance and Service Guide
Removal and replacement procedures
Remove the WLAN module (for models with UMA graphics subsystems):
ÄCAUTION: To prevent an unresponsive system, replace the wireless module only with a wireless module authorized
for use in the comp uter by the government al agency that regu lates wireless devices i n your country or reg ion. If you
replace the module and then receive a warning message, remove the module to restore computer functionality, and
then contact technical support through Help and Support.
1. Remove the hard drive cover (see “Hard drive” on page 4-8).
2. Position the computer with the front toward you.
3. Disconnect the WLAN antenna cables 1 from the terminals on the WLAN module.
✎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.
4. Remove the two Phillips PM2.0×4.0 screws 2 that secure the WLAN module to the computer. (The edge of the
module opposite the slot rises away from the computer.)
5. Remove the WLAN module 3 by pulling the module away from the slot at an angle.
✎WLAN modules are designed with a notch 4 to prevent incorrect insertion of the WLAN module into
the WLAN module slot.