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4–38 Maintenance and Service Guide
Removal and replacement procedures
Modem module cable
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 4-6).
5. Remove the following components:
a. Optical drive (see “Optical drive” on page 4-7)
b. Hard drive (see “Hard drive” on page 4-9)
c. Keyboard (see “Keyboard” on page 4-15)
d. Keyboard cover (see “Keyboard cover” on page 4-17)
e. Power button board (see “Power button board” on page 4-19)
f. Display assembly (see “Display assembly” on page 4-20)
g. Top cover (see “Top cover” on page 4-26)
h. Speakers (see “Speakers” on page 4-33)
i. System board (see “System board” on page 4-35)
Remove the modem module cable:
1. Remove the modem module cable from the clip 1 built into the base enclosure.
2. Remove the modem module cable 2 from the clips and routing channels built into the base enclosure 3.
Reverse this procedure to install the modem module cable.
Description Spare part number
Modem module cable 489125-001