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 60).

5.Remove the following components:

a.Switch cover and keyboard (see Switch cover and keyboard on page 61)

b.Optical drive (see Optical drive on page 66)

c.Speakers (see Speakers on page 69)

d.WWAN module (see WWAN module on page 70)

e.Palm rest (see Palm rest on page 71)

f.WLAN module (see WLAN module on page 76)

g.Hard drive (see Hard drive on page 74)

h.Top cover (see Top cover on page 84)

i.Display assembly (see Display assembly on computers with 15.6-in displays on page 78 or Display assembly on computers with 14.0-in displays on page 91)

j.System board (see System board on page 106)

To remove the SIM:

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 SIM to the system board.

3.Remove the SIM (2) by pulling the module straight up and off the computer.

Reverse this procedure to install the SIM.

Component replacement procedures 109