HP ProBook 4420s HP ProBook 4320s, 4321s, 4420s, and 4421s Notebook PCs - Mai - Page 90

Battery, on Switch cover, Keyboard, Speakers, Palm rest, WWAN module, WLAN module

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Description ● Display cable for use with 35.6-cm (14.0-in) displays with webcam ● Display cable for use with 33.8-cm (13.3-in) displays without webcam ● Display cable for use with 35.6-cm (14.0-in) displays without webcam WLAN antennas and cables WWAN antennas and cables Display back cover ● For use with 33.8-cm (13.3-in) displays without WWAN ● For use with 35.6-cm (14.0-in) displays without WWAN ● For use with 33.8-cm (13.3-in) displays with WWAN ● For use with 35.6-cm (14.0-in) displays with webcam and without WWAN ● For use with 33.8-cm (13.3-in) displays with webcam and without WWAN ● For use with 33.8-cm (13.3-in) displays without WWAN, red ● For use with 33.8-cm (13.3-in) displays with webcam and without WWAN, red ● For use with 33.8-cm (14.0-in) displays without WWAN, red ● For use with 35.6-cm (14.0-in) displays with webcam and without WWAN, red Spare part number 605558-001 605557-001 599535-001 599526-001 599527-001 599528-001 605556-001 607094-001 607643-001 607644-001 607645-001 607646-001 Before removing the display assembly, 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 49). 5. Remove the following components: a. Switch cover (see Switch cover on page 51) b. Keyboard (see Keyboard on page 53) c. Speakers (see Speakers on page 60) d. Palm rest (see Palm rest on page 64) e. WWAN cables (see WWAN module on page 62) f. WLAN cables (see WLAN module on page 69) Remove the display assembly: 82 Chapter 4 Removal and replacement procedures

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Description
Spare part number
●
Display cable for use with
35.6-cm
(14.0-in) displays with webcam
605558-001
●
Display cable for use with
33.8-cm
(13.3-in) displays without webcam
605557-001
●
Display cable for use with
35.6-cm
(14.0-in) displays without webcam
599535-001
WLAN antennas and cables
WWAN antennas and cables
Display back cover
●
For use with
33.8-cm
(13.3-in) displays without WWAN
599526-001
●
For use with
35.6-cm
(14.0-in) displays without WWAN
599527-001
●
For use with
33.8-cm
(13.3-in) displays with WWAN
599528-001
●
For use with
35.6-cm
(14.0-in) displays with webcam and without WWAN
605556-001
●
For use with
33.8-cm
(13.3-in) displays with webcam and without WWAN
607094-001
●
For use with
33.8-cm
(13.3-in) displays without WWAN, red
607643-001
●
For use with
33.8-cm
(13.3-in) displays with webcam and without WWAN, red
607644-001
●
For use with
33.8-cm
(14.0-in) displays without WWAN, red
607645-001
●
For use with
35.6-cm
(14.0-in) displays with webcam and without WWAN, red
607646-001
Before removing the display assembly, 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
49
).
5.
Remove the following components:
a.
Switch cover (see
Switch cover
on page
51
)
b.
Keyboard (see
Keyboard
on page
53
)
c.
Speakers (see
Speakers
on page
60
)
d.
Palm rest (see
Palm rest
on page
64
)
e.
WWAN cables (see
WWAN module
on page
62
)
f.
WLAN cables (see
WLAN module
on page
69
)
Remove the display assembly:
82
Chapter 4
Removal and replacement procedures