HP ProBook 4525s HP ProBook 4525s Notebook PC - Maintenance and Service Guide - Page 67

WWAN module, The spare part number for the HP un2420 Broadband Module is 531993-010.

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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 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. 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.) 4. Remove the WLAN module (3) by pulling the module away from the slot at an angle. NOTE: WLAN modules are designed with a notch (4) to prevent incorrect insertion. Reverse this procedure to install the WLAN module. WWAN module NOTE: Only computers with UMA graphics include a WWAN module. NOTE: The spare part number for the HP un2420 Broadband Module is 531993-010. 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 computer functionality, and then contact technical support through Help and Support. Component replacement procedures 59

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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 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.
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.)
4.
Remove the WLAN module
(3)
by pulling the module away from the slot at an angle.
NOTE:
WLAN modules are designed with a notch
(4)
to prevent incorrect insertion.
Reverse this procedure to install the WLAN module.
WWAN module
NOTE:
Only computers with UMA graphics include a WWAN module.
NOTE:
The spare part number for the HP un2420 Broadband Module is 531993-010.
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 computer functionality, and then contact technical support through Help and Support.
Component replacement procedures
59