Replace A Cru; Base Cover Assembly - Lenovo ThinkPad X1 Carbon Gen 12 CAT4 User Manual

3. Select Disable Built-in Battery and press Enter.
4. Select Yes in the Setup Confirmation window. The built-in battery is disabled and the computer turns off
automatically. Wait three to five minutes to let the computer cool.

Replace a CRU

Follow the replacement procedure to replace a CRU.

Base cover assembly

Prerequisite
Before you start, read
Generic Safety and Compliance Notices
Notes: Do not remove the base cover assembly in the following situations. Otherwise, there might be a risk
of short circuits.
• When your computer has the removable battery installed
• When your computer is connected to ac power
For access, do the following:
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 over the computer.
Removal procedure
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.
28
ThinkPad X1 Carbon Gen 12 Linux User Guide
and print the following instructions.