HP PROBOOK 4520S Maintenance And Service Manual page 84

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
5.
Remove the following components:
a.
b.
Remove the WLAN module:
1.
Position the computer right-side up with the front toward you.
2. Disconnect the WLAN antenna cables (1) from the terminals on the WLAN module.
NOTE:
white WLAN antenna cable is connected to the WLAN module "Aux" terminal.
3. 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.)
74 Chapter 4 Removal and replacement procedures
Battery on page
Switch cover and keyboard (see
Thermal shield (see Thermal shield on page
The black WLAN antenna cable is connected to the WLAN module "Main" terminal. The
55).
Switch cover and keyboard on page
67)
56)