HP ProBook 4320s Maintenance And Service Manual page 86

CAUTION:
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 computer functionality, and then contact technical support through Help
and Support.
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. Switch cover (see
b. Keyboard (see
c. Palm rest (see
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:
The white WLAN antenna cable is connected to the WLAN module "Aux" terminal.
3. Remove the two Phillips PM2.5×3.0 screws (2) that secure the WLAN module to the computer.
(The edge of the module opposite the slot rises away from the computer.)
78 Chapter 4 Removal and replacement procedures
To prevent an unresponsive system, replace the wireless module only with a wireless
Battery on page
Switch cover on page
Keyboard on page
Palm rest on page
The black WLAN antenna cable is connected to the WLAN module "Main" terminal.
56).
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