Before removing the WWAN module, follow these steps:
1. Prepare the computer for disassembly (see Preparation for disassembly on page 40).
2. Remove the display panel (see Display panel on page 42).
3. Disconnect the battery cable from the system board (see Battery on page 46).
Remove the WWAN module:
1. Remove the reusable protective strip from on top of the antenna connectors (1).
2. Disconnect the antenna cables (2).
3. Using a Phillips #0 screwdriver, remove the Phillips M1.4 × 1.6 screw (3), and then remove the module
(4).
NOTE: Models have either one or two WLAN antennas. On models with two antennas, the #1 white
WLAN antenna cable connects to the WLAN module #1 Main terminal. The #2 black WLAN antenna cable
connects to the WLAN module #1 Aux terminal.
4. If the WWAN antenna is not connected to the terminal on the WWAN module, a protective sleeve must be
installed on the antenna connector, as shown in the following illustration.
52 Chapter 6 Removal and replacement procedures for authorized service provider parts
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