HP mt42 Maintenance and Service Guide - Page 44

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 MU736 HSPA+ with GPS M.2 (NGFF) Spare part number 800870-001 822828-001 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 25). 5. Remove the battery (see Battery on page 28). 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 PM2.5×3.0 screws (2) that secure the WWAN module to the computer. (The edge of the module opposite the slot rises away from the computer.) 34 Chapter 5 Removal and replacement procedures for Customer Self-Repair parts

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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
Spare part number
HP lt4120 LTE/EVDO/HSPA+ SnapdragonT X5 LTE Mobile Broadband Module
800870-001
Huawei MU736 HSPA+ with GPS M.2 (NGFF)
822828-001
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
25
).
5.
Remove the battery (see
Battery
on page
28
).
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 PM2.5×3.0 screws
(2)
that secure the WWAN module to the computer. (The
edge of the module opposite the slot rises away from the computer.)
34
Chapter 5
Removal and replacement procedures for Customer Self-Repair parts