Wireless Wan Card (For Selected Models) - Lenovo ThinkPad X1 Extreme Gen3 User Manual

5. Install the new base cover assembly in place
2
assembly .
6. Turn over the computer. Connect the ac power adapter and all disconnected cables to the computer.
Troubleshooting
If the computer does not start up after you reinstall the base cover assembly, disconnect the ac power
adapter and then reconnect it to the computer.

Wireless WAN card (for selected models)

The following information is only for the computer with user-installable modules.
The following information is only for the computer with user-installable modules. Ensure that you use only a
Lenovo-authorized wireless module specifically tested for this computer model. Otherwise, the computer will
generate an error-code beep sequence when you turn on the computer.
Prerequisite
Before you start, read Generic Safety and Compliance Notices and print the following instructions.
Attention: Do not touch the contact edge of the wireless WAN card. Otherwise, the wireless WAN card
might get damaged.
Replacement procedure
1. Disable the built-in battery. See "Disable the built-in battery" on page 27.
2. Turn off the computer and disconnect the computer from ac power and all connected cables.
3. Close the computer display and turn the computer over.
4. Remove the base cover assembly. See "Base cover assembly" on page 28.
1 and tighten the screws to secure the base cover
.
Chapter 6 CRU replacement
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