Manual

WWAN module
NOTE: The WWAN module and the WLAN module are not interchangeable.
Description Spare part number
HP lt4120 Qualcomm Snapdragon X5 LTE/EVDO/HSPA+ Gobi 4G Mobile Broadband Module 800870-001
HP hs3110 HSPA Intel Mobile Broadband Module 822828-001
Before removing the WWAN module, follow these steps:
1. Turn o the computer. If you are unsure whether the computer is o 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 33).
5. Disconnect the battery (see Battery on page 34).
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 screw (2) that secures the WWAN module to the base enclosure.
42 Chapter 5 Removal and replacement procedures for Customer Self-Repair parts