HP 640 ProBook G3 Notebook PC & HP 650 ProBook G3 Notebook PC - Maintenance and Service Guide

Table Of Contents
1. Shut down the computer.
2. Disconnect all external devices connected to the computer.
3. Disconnect the power from the computer by rst unplugging the power cord from the AC outlet and then
unplugging the AC adapter from the computer.
4. Remove the following components:
a. Service door (see Service door on page 37).
b. Remove the battery (see Battery on page 38)
c. Hard drive (see Hard drive on page 39).
d. Solid state drive (see Solid-state drive (select products only) on page 41).
Remove the WWAN module:
1. Disconnect the two cables (1).
2. Remove 1 M 2.0x 3L P1screw (2), and then remove the WWAN module.
Reverse this procedure to install the WWAN module.
WLAN module
NOTE: The WLAN module spare part kit includes the cable.
Description Spare part number
WLAN module
Component replacement procedures 43