Wwan Module - HP Pavilion dv4 Maintenance And Service Manual

WWAN module

NOTE: This section applies only to computer models equipped with an Intel processor.
Description
HP un2420 EV-DO/HSPA Mobile Broadband Module
HP hs2340 HSPA+ Mobile Broadband 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 device functionality, and then contact technical support.
Before removing the WWAN 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 memory module/wireless module compartment cover (see
on page
Remove the WWAN module:
1. Disconnect the WWAN antenna cables (1) from the terminals on the WWAN module.
NOTE:
WWAN antenna cable is connected to the WWAN module #2 terminal.
2. Remove the two Phillips PM2.0×3.0 screws (2) that secure the WWAN module to the
system board. (The WWAN module tilts up.)
To prevent an unresponsive system, replace the wireless module only with a wireless
Battery on page
44).
The red WLAN antenna cable is connected to the WWAN module #1 terminal. The blue
41).
Component replacement procedures
Spare part number
531993-001
632155-001
WLAN module
47