HP ProBook 640 Maintenance and Service Guide - Page 72

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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). e. WWAN module (see WWAN module (select products only) on page 42). f. WLAN module (see WLAN module on page 44). g. Optical drive (see Optical drive on page 46). h. Keyboard (see Keyboard on page 48). i. Hinge covers (see Hinge cover on page 55). j. Base enclosure (see Base enclosure on page 57). k. System board (see System board on page 59). To remove the fan and heat sink assembly for products with discrete graphics: 1. Disconnect the cable (1) from the system board. 2. Loosen 6 Phillips captive screws (2). 3. Lift the fan and heat sink assembly (3) to remove it . To remove the fan and heat sink assembly for products with integrated graphics: 1. Disconnect the cable (1) from the system board. 2. Loosen 4 Phillips captive screws (2). 62 Chapter 6 Removal and replacement procedures for Authorized Service Provider parts

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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
).
e.
WWAN module (see
WWAN module (select products only)
on page
42
).
f.
WLAN module (see
WLAN module
on page
44
).
g.
Optical drive (see
Optical drive
on page
46
).
h.
Keyboard (see
Keyboard
on page
48
).
i.
Hinge covers (see
Hinge cover
on page
55
).
j.
Base enclosure (see
Base enclosure
on page
57
).
k.
System board (see
System board
on page
59
).
To remove the fan and heat sink assembly for products with discrete graphics:
1.
Disconnect the cable
(1)
from the system board.
2.
Loosen 6 Phillips captive screws
(2)
.
3.
Lift the fan and heat sink assembly
(3)
to remove it .
To remove the fan and heat sink assembly for products with integrated graphics:
1.
Disconnect the cable
(1)
from the system board.
2.
Loosen 4 Phillips captive screws
(2)
.
62
Chapter 6
Removal and replacement procedures for Authorized Service Provider parts