System information

WWAN module
Description Spare part number
HSPA EV-DO WWAN module 531993-001
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 cord.
4. Remove the battery (see
Battery on page 39).
5. Remove the hard drive cover (see
Hard drive on page 41).
Remove the WWAN module:
1. Disconnect the WWAN antenna cables from 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.
44 Chapter 4 Removal and replacement procedures ENWW