![](/images/new-backgrounds/1152356/152356103x1.webp)
6.Remove the WLAN module by pulling the module away from the slot at an angle.
NOTE: If the WLAN antennas are not connected to the terminals on the WLAN module, the protective sleeves must be installed on the antenna connectors, as shown in the following illustration.
Reverse this procedure to install the WLAN module.
RTC battery
Description | Spare part number |
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RTC battery |
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Before removing the RTC battery, 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.
44 | Chapter 4 Removal and replacement procedures |