WWAN module
CAUTION: The WWAN module and the WLAN module are not interchangeable.
Description Spare part number
Verizon EVDO-A WWAN module 451131-001
Cingular HSPDA WWAN module 448673-002
Vodafone HSPDA WWAN module 448672-002
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 SIM (see
SIM on page 42).
Remove the WWAN module:
1. Position the computer with the front toward you.
2. Loosen the Phillips PM2.0×5.0 captive screw (1) that secures the WWAN module compartment
cover to the computer.
3. Lift the left side of the WWAN module compartment cover (2), swing it up and to the right, and
remove the cover. The WWAN module compartment cover is included in the Plastics Kit, spare
part number 451743-001.
4. 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.
54 Chapter 4 Removal and replacement procedures
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