HP ZBook 17 Maintenance and Service Guide - Page 66

WWAN module NOTE: The WWAN module and the WLAN module are not interchangeable. Description HP lt4120 Qualcomm Snapdragon X5 LTE/EVDO/HSPA+ Gobi 4G Mobile Broadband Module HP hs3110 HSPA Intel Mobile Broadband Module Spare part number 800870-002 919698-852 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 36). 5. Disconnect the battery (see Battery on page 39). 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. 52 Chapter 5 Removal and replacement procedures for Customer Self-Repair parts