HP EliteBook 800 EliteBook 820 G4 Notebook PC EliteBook 828 G4 Notebook PC Mai - Page 54
WWAN module, from the terminals on the WWAN module.
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WWAN module The WLAN module and WWAN module are not interchangeable. The WWAN module is available on select models only. Description HP lt4120 LTE/EVDO/HSPA+ SnapdragonT X5 LTE Mobile Broadband Module Huawei HP It4132, LTE/HSPA+ with GPS M.2 Fibocom HP hs3210 WW HSPA+ without GPS Spare part number 800870-001 845710-001 860726-001 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 bottom cover (see Bottom cover on page 30). 5. Remove the battery (see Battery on page 35). Remove the WWAN module: 1. Position the computer upside-down. 2. 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. 3. Remove the one Phillips M2.5×3.0 screws (2) that secure the WWAN module to the computer. (The edge of the module opposite the slot rises away from the computer.) 44 Chapter 5 Removal and replacement procedures for Customer Self-Repair parts