HP ProBook 4326s HP ProBook 4325s, 4326s and 4425s Notebook PCs - Maintenance - Page 98

System board, Battery, on Switch cover, Keyboard, Speakers, WWAN module, Palm rest

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System board NOTE: The system board spare part kit includes replacement thermal material. Description System board (includes replacement thermal material) ● For use with discrete graphics subsystem and 33.8-cm (13.3-in) displays ● For use with UMA graphics subsystem and 35.6-cm (14.0-in) displays ● For use with UMA graphics subsystem and 33.8-cm (13.3-in) displays in the People's Republic of China and Russia ● For use with discrete graphics subsystem and 33.8-cm (13.3-in) displays in the People's Republic of China and Russia ● For use with UMA graphics subsystem and 35.6-cm (14.0-in) displays in the People's Republic of China and Russia Spare part number 607654-001 607656-001 614963-001 614962-001 614964-001 Before removing the system board, follow these steps: 1. Shut down the computer. If you are unsure whether the computer is off or in Hibernation, turn the computer on, and then shut it down through the operating system. 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 battery (see Battery on page 44). 5. Remove the following components: a. SIM (see SIM on page 45) b. Switch cover (see Switch cover on page 46) c. Keyboard (see Keyboard on page 48) d. Speakers (see Speakers on page 55) e. WWAN module (see WWAN module on page 57) f. Palm rest (see Palm rest on page 60) g. Bluetooth module and cable (see Bluetooth module on page 69) h. WLAN module (see WLAN module on page 66) i. Hard drive (see Hard drive on page 63) j. Optical drive (see Optical drive on page 52) k. Display assembly (see Display assembly on page 78) 90 Chapter 4 Removal and replacement procedures

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System board
NOTE:
The system board spare part kit includes replacement thermal material.
Description
Spare part number
System board
(includes replacement thermal material)
●
For use with discrete graphics subsystem and
33.8-cm
(13.3-in) displays
607654-001
●
For use with UMA graphics subsystem and
35.6-cm
(14.0-in) displays
607656-001
●
For use with UMA graphics subsystem and
33.8-cm
(13.3-in) displays in the People's
Republic of China and Russia
614963-001
●
For use with discrete graphics subsystem and
33.8-cm
(13.3-in) displays in the People's
Republic of China and Russia
614962-001
●
For use with UMA graphics subsystem and
35.6-cm
(14.0-in) displays in the People's
Republic of China and Russia
614964-001
Before removing the system board, follow these steps:
1.
Shut down the computer. If you are unsure whether the computer is off or in Hibernation, turn the
computer on, and then shut it down through the operating system.
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 battery (see
Battery
on page
44
).
5.
Remove the following components:
a.
SIM (see
SIM
on page
45
)
b.
Switch cover (see
Switch cover
on page
46
)
c.
Keyboard (see
Keyboard
on page
48
)
d.
Speakers (see
Speakers
on page
55
)
e.
WWAN module (see
WWAN module
on page
57
)
f.
Palm rest (see
Palm rest
on page
60
)
g.
Bluetooth module and cable (see
Bluetooth module
on page
69
)
h.
WLAN module (see
WLAN module
on page
66
)
i.
Hard drive (see
Hard drive
on page
63
)
j.
Optical drive (see
Optical drive
on page
52
)
k.
Display assembly (see
Display assembly
on page
78
)
90
Chapter 4
Removal and replacement procedures