HP ProBook 4420s HP ProBook 4320s, 4321s, 4420s, and 4421s Notebook PCs - Mai - Page 99

Modem module

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Modem module Description Spare part number Modem module NOTE: The modem module spare part kit does not include a modem module cable. The modem module cable is included in the cable kit. See Cable kit on page 32 for more cable kit spare part information. High-speed 56K modem for use in all countries and regions except Australia and New Zealand 510100-001 High-speed 56K modem for use in Australia and New Zealand 510100-011 Before removing the modem module, 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. Top cover (see Top cover on page 89) Remove the modem module: 1. Position the computer right-side up with the front toward you. 2. Remove the two Phillips PM2.5×3.0 screws (1) that secure the modem module to the system board. 3. Lift the modem module (2) straight up to disconnect it from the system board. Component replacement procedures 91

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Modem module
Description
Spare part number
Modem module
NOTE:
The modem module spare part kit does not include a modem module cable. The modem
module cable is included in the cable kit. See
Cable kit
on page
32
for more cable kit spare part
information.
High-speed 56K modem for use in all countries and regions except Australia and New Zealand
510100-001
High-speed 56K modem for use in Australia and New Zealand
510100-011
Before removing the modem module, 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.
Top cover (see
Top cover
on page
89
)
Remove the modem module:
1.
Position the computer right-side up with the front toward you.
2.
Remove the two Phillips PM2.5×3.0 screws
(1)
that secure the modem module to the system
board.
3.
Lift the modem module
(2)
straight up to disconnect it from the system board.
Component replacement procedures
91