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 un2420 Broadband Module (WWAN) 531993-001
HP hs2320 HSPA Mobile Broadband Module 574248-001
HSPA F3607 WWAN minicard module 574249-001
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 47).
5. Remove the SIM (see
SIM on page 48).
Remove the WWAN module:
1. Loosen the captive Phillips PM2.0×5.0 captive screw (1) that secures the WWAN cover to the
computer.
62 Chapter 4 Removal and replacement procedures
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