HP ProBook 4420s HP ProBook 4320s, 4321s, 4420s, and 4421s Notebook PCs - Mai - Page 104

Modem module cable

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Modem module cable NOTE: The modem module cable with RJ11 connector is included in the Cable kit on page 32, part number 599525-001. Before removing the modem module cable, 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. Optical drive (see Optical drive on page 57) d. Speakers (see Speakers on page 60) e. Palm rest (see Palm rest on page 64) f. Hard drive (see Hard drive on page 66) g. Display assembly (see Display assembly on page 81) h. Top cover (see Top cover on page 89) i. System board (see System board on page 93) j. USB connector board and cable (see USB connector board on page 94) Remove the modem cable. 1. Position the computer right-side up with the front toward you. 2. Release the modem RJ11 connector from the base enclosure clips (1). 96 Chapter 4 Removal and replacement procedures

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Modem module cable
NOTE:
The modem module cable with RJ11 connector is included in the
Cable kit
on page
32
, part
number 599525-001.
Before removing the modem module cable, 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.
Optical drive (see
Optical drive
on page
57
)
d.
Speakers (see
Speakers
on page
60
)
e.
Palm rest (see
Palm rest
on page
64
)
f.
Hard drive (see
Hard drive
on page
66
)
g.
Display assembly (see
Display assembly
on page
81
)
h.
Top cover (see
Top cover
on page
89
)
i.
System board (see
System board
on page
93
)
j.
USB connector board and cable (see
USB connector board
on page
94
)
Remove the modem cable.
1.
Position the computer right-side up with the front toward you.
2.
Release the modem RJ11 connector from the base enclosure clips
(1)
.
96
Chapter 4
Removal and replacement procedures