HP ProBook 640 Maintenance and Service Guide - Page 55

Remove 1 M 2.0x3L P1 screw, Shut down the computer.

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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 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). Remove the WLAN module: 1. Disconnect the two cables (1). 2. Remove 1 M 2.0x3L P1 screw (2). 3. Remove the bracket (3), and then remove the WLAN module. Reverse this procedure to install the WLAN module. Component replacement procedures 45

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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
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
).
Remove the WLAN module:
1.
Disconnect the two cables
(1)
.
2.
Remove 1 M 2.0x3L P1 screw
(2)
.
3.
Remove the bracket
(3)
, and then remove the WLAN module.
Reverse this procedure to install the WLAN module.
Component replacement procedures
45