HP ProBook 4340s HP ProBook 4340s Notebook PC HP ProBook 4341s Notebook PC - M - Page 70

Remove the Phillips PM2.5×6.0 screw, Remove the system board

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4. Remove the battery (see Battery on page 31). 5. Remove the following components: a. Bottom door (see Bottom door on page 33). b. Hard drive (see Hard drive on page 37) c. Optical drive (see Optical drive on page 35) d. Keyboard (see Keyboard on page 45) e. Top cover (see Top cover on page 47) When replacing the system board, be sure to remove the following components from the defective system board and install on the replacement system board: ● SIM card (see SIM on page 34) ● Memory module (see Memory modules on page 39) ● WLAN module (see WLAN/Bluetooth combo card on page 43) ● WWAN module (see WWAN module on page 41) Remove the system board: 1. Position the computer upright with the front toward you. 2. Disconnect the display cable (1), speaker cable (2), and the power cable (3) from the system board. 3. Remove the Phillips PM2.5×6.0 screw (1) that secures the system board to the base enclosure. 62 Chapter 4 Removal and replacement procedures

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4.
Remove the battery (see
Battery
on page
31
).
5.
Remove the following components:
a.
Bottom door (see
Bottom door
on page
33
).
b.
Hard drive (see
Hard drive
on page
37
)
c.
Optical drive (see
Optical drive
on page
35
)
d.
Keyboard (see
Keyboard
on page
45
)
e.
Top cover (see
Top cover
on page
47
)
When replacing the system board, be sure to remove the following components from the defective
system board and install on the replacement system board:
●
SIM card (see
SIM
on page
34
)
●
Memory module (see
Memory modules
on page
39
)
●
WLAN module (see
WLAN/Bluetooth combo card
on page
43
)
●
WWAN module (see
WWAN module
on page
41
)
Remove the system board:
1.
Position the computer upright with the front toward you.
2.
Disconnect the display cable
(1)
, speaker cable
(2)
, and the power cable
(3)
from the system
board.
3.
Remove the Phillips PM2.5×6.0 screw
(1)
that secures the system board to the base enclosure.
62
Chapter 4
Removal and replacement procedures