HP 640 ProBook G3 Series Maintenance And Service Manual page 54

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. Battery (see
c. Hard drive (see
d. Solid-state drive (see
e. WWAN module (see
f. WLAN module (see
Remove the optical drive:
1. Remove 1 Phillips M2.0x8 screw (1).
2. Remove the optical drive (2).
Reverse this procedure to install the optical drive.
46 Chapter 5 Removal and replacement procedures for Authorized Service Provider parts
Service door on page
Battery on page 38).
Hard drive on page 39).
Solid-state drive (select products only) on page
WWAN module (select products only) on page
WLAN module on page
37).
43).
41).
42).