HP Pavilion dv4-4000 HP Pavilion dv4 Entertainment PC - Maintenance and Servic - Page 55

WWAN module, from the terminals on the WWAN module.

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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 Spare part number 531993-001 632155-001 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 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 Battery on page 41). 5. Remove the memory module/wireless module compartment cover (see WLAN module on page 44). Remove the WWAN module: 1. Disconnect the WWAN antenna cables (1) from the terminals on the WWAN module. NOTE: The red WWAN antenna cable is connected to the WWAN module #1 terminal. The blue 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.) Component replacement procedures 47

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WWAN module
NOTE:
This section applies only to computer models equipped with an Intel processor.
Description
Spare part number
HP un2420 EV-DO/HSPA Mobile Broadband Module
531993-001
HP hs2340 HSPA+ Mobile Broadband Module
632155-001
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 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
Battery
on page
41
).
5.
Remove the memory module/wireless module compartment cover (see
WLAN module
on page
44
).
Remove the WWAN module:
1.
Disconnect the WWAN antenna cables
(1)
from the terminals on the WWAN module.
NOTE:
The red WWAN antenna cable is connected to the WWAN module #1 terminal. The
blue 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.)
Component replacement procedures
47