Lenovo 20G8 Hardware Maintenance Manual page 45

Before servicing the computer
Carefully read this topic before servicing the computer.
Disabling the built-in battery
Before replacing any FRU, ensure that you have disabled the built-in battery by doing the following:
1. Turn off your computer and disconnect the ac power adapter and all cables from the computer.
2. Turn on your computer. When the ThinkPad logo is displayed, immediately press F1 to enter ThinkPad
Setup.
3. Select Config ➙ Power. The Power submenu is displayed.
4. Select Disable built-in battery and press Enter.
5. 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.
Removing a major FRU
This section provides instructions on how to remove a major FRU.
Note: Your computer or the components of your computer might look slightly different from the following
illustrations.
1010 Bottom cover
Removal steps of the bottom cover
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ThinkPad 11e 3rd Gen and ThinkPad Yoga 11e 3rd Gen Hardware Maintenance Manual