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Lenovo 21JK User Manual

Lenovo 21JK
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To disable the built-in battery:
1. Restart your computer. When the logo screen is displayed, immediately press F1 to enter the UEFI BIOS
menu.
2. Select Config Power. The Power submenu is displayed.
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 and print the following instructions.
Note: Do not remove the base cover assembly when your computer is connected to ac power Otherwise,
there might be a risk of short circuits.
For access, do the following:
1. Disable the built-in battery. See “Disable Fast Startup and the built-in battery” on page 41.
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
ThinkPad E14 Gen 5
42 ThinkPad E14 Gen 5 and ThinkPad E16 Gen 1 User Guide

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Lenovo 21JK Specifications

General IconGeneral
BrandLenovo
Model21JK
CategoryLaptop
LanguageEnglish

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