HP ProBook 4341s HP ProBook 4340s Notebook PC HP ProBook 4341s Notebook PC - M - Page 49

WWAN module

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WWAN module CAUTION: The WWAN module and the WLAN module are not interchangeable. Description Ericsson F5321 HSPA+ with GPS Sierra MC8355 (Gobi3000) HSPA/CDMA Spare part number 668969-001 634400-001 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 31). 5. Remove the bottom door (see Bottom door on page 33). Remove the WWAN module: 1. Position the computer upside-down. 2. 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 "Main" terminal. The blue WWAN antenna cable is connected to the WWAN module "Aux" terminal. 3. Remove the two Phillips PM2.5×3.0 screws (2) that secure the WWAN module to the computer. (The edge of the module opposite the slot rises away from the computer.) Component replacement procedures 41

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WWAN module
CAUTION:
The WWAN module and the WLAN module are not interchangeable.
Description
Spare part number
Ericsson F5321 HSPA+ with GPS
668969-001
Sierra MC8355 (Gobi3000) HSPA/CDMA
634400-001
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
31
).
5.
Remove the bottom door (see
Bottom door
on page
33
).
Remove the WWAN module:
1.
Position the computer upside-down.
2.
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 “Main” terminal. The
blue WWAN antenna cable is connected to the WWAN module “Aux” terminal.
3.
Remove the two Phillips PM2.5×3.0 screws
(2)
that secure the WWAN module to the computer.
(The edge of the module opposite the slot rises away from the computer.)
Component replacement procedures
41