Heat Sink And Fan - HP ProBook 4520s Maintenance And Service Manual

4. Remove the battery (see
5. Remove the switch cover and keyboard (see
Remove the WWAN module:
1. Position the computer right-side up with the front toward you.
2. Disconnect the WWAN antenna cables (1) from the terminals on the WWAN module.
NOTE:
The blue WWAN antenna cable is connected to the WWAN module "Aux" terminal. The
terminals and cables are both identified by number and color.
3. Remove the two Torx M2.5×6.0 screws (2) that secure the WWAN module to the computer. (The
edge of the module opposite the slot rises away from the computer.)
4. Remove the WWAN module (3) by pulling the module away from the slot at an angle.
NOTE:
Reverse this procedure to install the WWAN module.

Heat sink and fan

NOTE: The heat sink spare part kit includes replacement thermal material.
Battery on page
The red WWAN antenna cable is connected to the WWAN module "Main" terminal.
WWAN modules are designed with a notch (4) to prevent incorrect insertion.
50).
Switch cover and keyboard on page
Component replacement procedures
51)
69