Removal And Replacement Procedures For Authorized Service Provider Parts; Component Replacement Procedures; Wwan Module - HP ProBook 645 G4 Maintenance And Service Manual

6 Removal and replacement procedures for
Authorized Service Provider parts
This chapter provides removal and replacement procedures for Authorized Service Provider only parts.
CAUTION:
Accessing these parts can damage the computer or void the warranty.
CAUTION:
perform the removal and replacement procedures described here. Accessing the internal part could damage
the computer or void the warranty.

Component replacement procedures

NOTE: Details about your computer, including model, serial number, product key, and length of warranty,
are on the service tag at the bottom of your computer. See
NOTE: HP continually improves and changes product parts. For complete and current information on
supported parts for your computer, go to http://partsurfer.hp.com, select your country or region, and then
follow the on-screen instructions.
There are as many as 64 screws that must be removed, replaced, and/or loosened when servicing Authorized
Service Provider only parts. Make special note of each screw size and location during removal and
replacement.

WWAN module

Description
LTE CAT4: Huawei HP lt4132, LTE/HSPA+ with GPS
LTE CAT9: Fibocom Intel XMM 7360 LTE - Advanced
Before removing the WWAN module, follow these steps:
1. Shut down the computer.
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
5. Remove the battery (see
Remove the WWAN module:
1. Disconnect the two antenna cables from the module (1).
40 Chapter 6 Removal and replacement procedures for Authorized Service Provider parts
Components described in this chapter should only be accessed by an authorized service provider.
This computer does not have user-replaceable parts. Only HP authorized service providers should
Bottom cover on page
Battery on page
Labels on page 17
33).
34).
for details.
Spare part number
845710-003
917823-001