HP 640 ProBook G3 Series Maintenance And Service Manual page 72

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
e. WWAN module (see
f. WLAN module (see
g. Optical drive (see
h. Keyboard (see
i. Hinge covers (see
j. Base enclosure (see
k. System board (see
l. Fan/heat sink assembly (see
Remove the top cover:
1. If the computer is equipped with a pointing stick (select products only), remove 2 M2x1.5L P0 pointing
stick screws.
64 Chapter 5 Removal and replacement procedures for Authorized Service Provider parts
Service door on page 37).
Battery on page
Hard drive on page 39).
Solid-state drive (select products only) on page
WWAN module (select products only) on page
WLAN module on page
Optical drive on page 45).
Keyboard on page 47).
Hinge cover on page 53).
Base enclosure on page
System board on page
Fan and heat sink assembly on page
38)
42).
43).
55).
57).
59).
41).