4. Disconnect the hard drive connector and cable from the hard drive (2).
Reverse this procedure to reassemble and install the hard drive.
WLAN module
Description Spare part number
Intel Dual Band Wireless-AC 7265 802.11 ac 2x2 WiFi + BT 4.0 Combo Adapter (non vPRO) 784644-005
Realtek RTL8188EE 802.11b/g/n 1x1 Wi-Fi Adapter 792609-005
Realtek RTL8723BE 802.11b/g/n 1x1 Wi-Fi + BT4.0 Combo Adapter 792610-005
CAUTION: To prevent an unresponsive system, replace the wireless module only with a wireless module
authorized for use in the computer by the governmental agency that regulates wireless devices in your
country or region. If you replace the module and then receive a warning message, remove the module to
restore device functionality, and then contact support.
Before removing the WLAN 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 29).
5. Remove the optical drive (see
Optical drive on page 30).
6. Remove the bottom cover (see
Bottom cover on page 34).
To remove the WLAN module:
1. Disconnect the WLAN antenna cables (1) from the terminals on the WLAN module.
NOTE: The #1 WLAN antenna cable is connected to the WLAN module Main terminal. The #2 WLAN
antenna cable is connected to the WLAN module Aux terminal.
2. Remove the Phillips PM2.0×3.0 screw (2) that secures the WLAN module to the system board. (The
WLAN module tilts up.)
38 Chapter 6 Removal and replacement procedures for Authorized Service Provider parts
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