HP Pavilion DV7-4280 Maintenance And Service Manual page 70

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 primary hard drive cover (see
6. Remove the primary hard drive (see
Remove the WLAN module:
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.
1. Disconnect the WLAN antenna cables (1) from the WLAN module.
NOTE:
white WLAN antenna cable is connected to the WLAN module "Aux" terminal.
2. Remove the two Phillips PM2.5×3.5 screws (2) that secure the WLAN module to the computer.
(The edge of the module opposite the slot rises away from the computer.)
3. Remove the WLAN module (3) by pulling it away from the slot.
NOTE:
WLAN module slot.
Reverse this procedure to install a WLAN module.
60 Chapter 4 Removal and replacement procedures
Battery on page
To prevent an unresponsive system, replace the wireless module only with a wireless
The black WLAN antenna cable is connected to the WLAN module "Main" terminal. The
WLAN modules are designed with a notch (4) to prevent incorrect insertion into the
51).
Primary hard drive cover on page
Hard drive on page 53).
52).