WWAN module
CAUTION: The WWAN module and the WLAN module are not interchangeable.
NOTE: Ericsson modules are only available in EMEA on certain computers.
Description Spare part number
HP F5521 Broadband Module (WWAN) 632155-001
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 50).
5. Remove the SIM (see
SIM on page 51).
6. Remove the keyboard (see
Keyboard on page 66).
Remove the WWAN module:
1. Disconnect the WWAN antenna cables (1) from the terminals on the WWAN module.
NOTE: The WWAN antenna cable (“Red” tag labelled (5)) is connected to the WWAN module
“Main” terminal. The WWAN antenna cable (“Blue” tag labelled (6)) is connected to the
WWAN module “Aux” terminal.
There are two different WWAN modules available, and each module has the antenna connectors
reversed.
2. 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
69
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