HP Presario CQ45-300 Compaq Presario CQ45 Notebook PC - Maintenance and Servic - Page 84

Modem module

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Modem module Description Spare part number Modem module for use in all countries and regions except for Australia and New Zealand (includes 461749-001 modem module cable) Modem module for use only in Australia and New Zealand (includes modem module cable) 461749-011 Modem module cable (includes RJ-11 connector) 494981-001 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 43). 5. Remove the following components: a. Hard drive (see Hard drive on page 46) b. Optical drive (see Optical drive on page 44) c. Keyboard (see Keyboard on page 56) d. Switch cover (see Switch cover on page 58) e. Speaker assembly (see Speaker assembly on page 60) f. Display assembly (see Display assembly on page 62) g. Top cover (see Top cover on page 69) Remove the modem module: 1. Turn the computer upright with the front toward you. 2. Disconnect the modem module cable (1) from the modem module. 3. Remove the two Phillips PM2.0×3.0 screws (2) that secure the modem module to the system board. 76 Chapter 4 Removal and replacement procedures

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Modem module
Description
Spare part number
Modem module for use in all countries and regions except for Australia and New Zealand (includes
modem module cable)
461749-001
Modem module for use only in Australia and New Zealand (includes modem module cable)
461749-011
Modem module cable (includes RJ-11 connector)
494981-001
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
43
).
5.
Remove the following components:
a.
Hard drive (see
Hard drive
on page
46
)
b.
Optical drive (see
Optical drive
on page
44
)
c.
Keyboard (see
Keyboard
on page
56
)
d.
Switch cover (see
Switch cover
on page
58
)
e.
Speaker assembly (see
Speaker assembly
on page
60
)
f.
Display assembly (see
Display assembly
on page
62
)
g.
Top cover (see
Top cover
on page
69
)
Remove the modem module:
1.
Turn the computer upright with the front toward you.
2.
Disconnect the modem module cable
(1)
from the modem module.
3.
Remove the two Phillips PM2.0×3.0 screws
(2)
that secure the modem module to the system board.
76
Chapter 4
Removal and replacement procedures