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Chapter 6. CRU replacement
This section provides instructions on how to replace Customer Replaceable Units (CRUs).
CRU list
This topic provides the CRU list of your computer.
Self-service CRUs
• ac power adapter*
• Power cord*
Optional-service CRUs
• Base cover assembly
• Built-in battery
• Memory module
• M.2 solid-state drive
• M.2 solid-state drive bracket
• Speaker assembly
* for selected models
Note: Replacement of any parts not listed above should be done by a qualified repair technician or by
ensuring that you carefully follow all instructions provided by Lenovo. You can also find Lenovo-authorized
repair facilities by going to https://support.lenovo.com/partnerlocator for more information.
Before you replace any CRU
Before replacing any CRU, ensure that you disable Fast Startup first and then disable the built-in battery.
Disable Fast Startup
Follow the instructions to disable Fast Startup.
Step 1.
Go to Control Panel and view by Large icons or Small icons.
Step 2.
Click Power Options, and then click Choose what the power buttons do on the left pane.
Step 3.
Click Change settings that are currently unavailable at the top.
Step 4.
If prompted by User Account Control (UAC), click Yes.
Step 5.
Clear the Turn on fast startup check box, and then click Save changes.
Disable the built-in battery
Follow the instructions to disable the built-in battery.
Step 1.
Restart your computer. When the logo screen is displayed, immediately press F1 to enter the UEFI
BIOS menu.
Step 2.
Select Config ➙ Power. The Power submenu is displayed.
Step 3.
Select Disable Built-in Battery and press Enter.
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