WWAN module
NOTE: The WWAN module and the WLAN module are not interchangeable.
Description Spare part number
HP lt4211 LTE/EV-DO/HSPA+4G Mobile Broadband Module 748021-001
HP lt4112 LTE/HSPA+ 4G Broadband Module 740011-001
HP hs3110 HSPA+ Mobile Broadband Module 748599-001
Before removing the WWAN module, follow these steps:
1. Turn off 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 the power from the computer by unplugging the power cord from the computer.
3. Disconnect all external devices from the computer.
4. Remove the service door (see
Service door on page 47).
5. Remove the battery (see
Battery on page 49).
Remove the WWAN module:
1. 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.
2. Remove the Phillips PM2.0×3.0 screw (2) that secures the WWAN module to the base enclosure.
54 Chapter 5 Removal and replacement procedures for Customer Self-Repair parts ENWW
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