Modem module
NOTE: The modem module spare part kits do not include a modem module cable. The modem
module cable is included in the Cable Kit, spare part number 457400-001. See
Cable Kit on page 21
for more Cable Kit spare part number information.
Description Spare part number
For use only in the United States 441074-001
For use only in Japan and Asia Pacific countries and regions 449139-001
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 37).
5. Remove the following components:
a. Hard drive (see
Hard drive on page 38)
b. Optical drive (see
Optical drive on page 45)
c. Keyboard (see
Switch cover and keyboard on page 47)
d. Switch cover (see
Switch cover and keyboard on page 47)
e. Speaker (see
Speaker on page 51)
f. Display lid switch module (see
Display lid switch module on page 52)
g. Display assembly (see
Display assembly on page 53)
h. Top cover (see
Top cover on page 58)
i. System board (see
System board on page 66)
Remove the modem module:
1. Turn the system board upside down, with the USB connectors toward you.
2. Remove the two Phillips PM2.5×4.0 screws (1) that secure the modem module to the system
board.
76 Chapter 4 Removal and replacement procedures
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