Prerequisite
Before you start, read Generic Safety and Compliance Notices and print the following instructions.
Note: 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:
Disable the built-in battery. See Disable Fast Startup and the built-in battery.
Turn off the computer and disconnect the computer from ac power and all connected cables.
Remove the nano-SIM-card tray if your computer comes with one. SeeConnect to a cellular network (for selected models)
Close the computer display and turn over the computer.
Removal procedure
For L14 Gen 3
For
L15 Gen 3
Installation procedure
For L14 Gen 3
For L15 Gen 3
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.