Wlan Module - HP 640 ProBook G3 Series Maintenance And Service Manual

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 following components:
a. Service door (see
b. Remove the battery (see
c. Hard drive (see
d. Solid state drive (see
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
WLAN module
Service door on page 37).
Battery on page
Hard drive on page 39).
Solid-state drive (select products only) on page
38)
Component replacement procedures
41).
Spare part number
43