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CRU replacement

This topic helps you find service QR code and serial number.

Scan the QR code on the base cover assembly to view the following information:

  • Your product information and warranty status
  • The latest Lenovo-verified drivers and software
  • Troubleshooting and diagnosing solutions when hardware or software issue is encountered
  • Customer support center and e-ticket entry for professional support

You can find your serial number via:

  • Dashboard or Device in the Vantage app
  • Serial-number label of your computer (shown as below illustration)
The machine type and serial number information are at the lower right corner of the base cover assembly

If you have tried to correct the problem yourself and still need help, you can call Lenovo Customer Support Center.

Before you contact Lenovo

Prepare the needed information before you contact Lenovo.

  1. Record the problem symptoms and details:
    • What is the problem? Is it continuous or intermittent?
    • Any error message or error code?
    • What operating system are you using? Which version?
    • Which software applications were running at the time of the problem?
    • Can the problem be reproduced? If so, how?
  2. Record the system information:
    • Product name.
    • Machine type and “serial number”.

Lenovo Customer Support Center

During the warranty period, you can call Lenovo Customer Support Center for help.

Telephone numbers

For a list of the Lenovo Support phone numbers for your country or region, go to Support Phone List for the latest phone numbers.

Phone numbers are subject to change without notice. If the number for your country or region is not provided, contact your Lenovo reseller or Lenovo marketing representative.

Services available during the warranty period

  • Problem determination - Trained personnel are available to assist you with determining if you have a hardware problem and deciding what action is necessary to fix the problem.
  • Lenovo hardware repair - If the problem is determined to be caused by Lenovo hardware under warranty, trained service personnel are available to provide the applicable level of service.
  • Engineering change management - Occasionally, there might be changes that are required after a product has been sold. Lenovo or your reseller, if authorized by Lenovo, will make selected Engineering Changes (ECs) that apply to your hardware available.

Services not covered

  • Replacement or use of parts not manufactured for or by Lenovo or nonwarranted parts
  • Identification of software problem sources
  • Configuration of UEFI BIOS as part of an installation or upgrade
  • Changes, modifications, or upgrades to device drivers
  • Installation and maintenance of network operating systems (NOS)
  • Installation and maintenance of programs

For the terms and conditions of the Lenovo Limited Warranty that apply to your Lenovo hardware product, go to:

Customer Replaceable Units (CRUs) are parts that can be replaced by the customer. The computers contain the following types of CRUs:

  • Self-service CRUs: Refer to parts that can be replaced easily by customer themselves or by trained service technicians at an additional cost.
  • Optional-service CRUs: Refer to parts that can be replaced by customers with a greater skill level. Trained service technicians can also provide service to replace the parts under the type of warranty designated for the customer’s machine.

If you intend on installing a CRU, Lenovo will ship the CRU to you. CRU information and replacement instructions are shipped with your product and are available from Lenovo at any time upon request. You might be required to return the defective part that is replaced by the CRU. When return is required: (1) return instructions, a prepaid shipping label, and a container will be included with the replacement CRU; and (2) you might be charged for the replacement CRU if Lenovo does not receive the defective CRU within thirty (30) days of your receipt of the replacement CRU. For full details, see the Lenovo Limited Warranty documentation at Lenovo Limited Warranty.

CRU list

The following is a list of CRUs of your computer.

Self-service CRUs

Optional-service CRUs

*for selected models

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 Find A Lenovo Service Provider for more information.

Disable Fast Startup and the built-in battery

Before replacing any CRU, ensure that you disable Fast Startup first and then disable the built-in battery.

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.

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.
Step 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 instructions to replace a CRU.

Base cover assembly

Follow the instructions to replace the base cover assembly.

Before you start, read Generic Safety and Compliance Notices and print the following instructions.

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 Fast Start up and the built-in battery. See Disable Fast Startup and the built-in battery.
  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.
Step 1
Remove the base cover as shown below.
llustration showing how to remove the base cover
Step 2
Install the base cover as shown below.
llustration showing how to install the base cover

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.

Built-in battery

Follow the instructions to replace the built-in battery.

Before you start, read Generic Safety and Compliance Notices.

CAUTION:

Use only the Lenovo-authorized battery specified for the computer. Any other battery could ignite or explode.

Batteries supplied by Lenovo for use with your product have been tested for compatibility and should only be replaced with approved parts. A battery other than the one specified by Lenovo, or a disassembled or modified battery may not be covered by warranty.

Battery abuse or mishandling can cause overheat, liquid leakage, or an explosion. To avoid possible injury:

  • Do not open, disassemble or service any battery unless you are competent to do so and ensure that you carefully follow all instructions provided by Lenovo.
  • Do not crush or puncture the battery.
  • Do not short-circuit the battery, or expose it to water or other liquids.
  • Keep the battery away from children.
  • Keep the battery away from fire.
  • Stop using the battery if it is damaged, or if you notice any discharge or the buildup of foreign materials on the battery leads.
  • Store the rechargeable batteries or products containing the rechargeable batteries at room temperature, charged to approximately 30 to 50% of capacity. We recommend that the batteries be charged about once per year to prevent overdischarge.
  • Do not put the battery in trash that is disposed of in landfills. When disposing of the battery, comply with local ordinances or regulations.
  • If the battery is incorrectly replaced, there is danger of an explosion. The battery contains a small amount of harmful substances.

Lenovo recommends you use a qualified repair technician or ensure that you carefully follow all instructions provided by Lenovo. The Lenovo-authorized repair facilities or technicians recycle Lenovo batteries according to local laws and regulations. Please do not dispose of your battery with your household waste. For recycling information go to https://www.lenovo.com/recycling.

Important notices for replacing a battery

Lenovo has no responsibility for the performance or safety of unauthorized batteries, and provides no warranties for failures or damage arising out of their use.

The Vantage app provides an automatic battery diagnostic test that determines if the built-in battery is defective. A built-in battery should not be replaced unless this diagnostic test shows that the battery is defective. The only exception to this is if the built-in battery is physically damaged or a customer is reporting a possible safety issue.

If the Vantage app is not installed on the computer, the customer should download and install the program to diagnose the built-in battery, before replacing a non-physically damaged built-in battery. Note that the replacement of a physically damaged built-in battery is not covered by the warranty.

For access, do the following:

  1. Disable Fast Start up and the built-in battery. See Disable Fast Startup and the built-in battery.
  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.
  4. Remove the base cover assembly. See Base cover assembly.

You can scan the QR code on the battery to view the battery replacement video.

Battery QR code
Step 1
Remove the built-in battery as shown below.
  • Loosen the six captive screws.
    Loosen the screws
  • Remove the battery as shown below.
Take out the battery
Step 2
Install the built-in battery in reverse order.

CAUTION:
Remove any foreign objects before reassembly.

Ensure that the base cover assembly is secured in place. Otherwise, the battery connection might fail.

CAMM2 top cover

Follow the instructions to replace the CAMM2 top cover.

Before you start, read Generic Safety and Compliance Notices and print the following instructions.

For access, do the following:

  1. Disable Fast Startup and the built-in battery. See Disable Fast Startup and the built-in battery.
  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.
  4. Remove the base cover assembly. See Base cover assembly.

Part location

Illustration of CAMM2 location

You can scan the QR code on the top cover to view the replacement video.

Illustration of QR code on the top cover
Step 1
Remove the top cover as shown below. Ensure you loosen screws in alphabetical order.
Illustration of how to remove the top cover.

When removing the top cover, ensure you lift it vertically as shown below.

Illustration of how to remove the top cover
Step 2
Install the top cover as shown below.

Before installing, ensure the memory module compartment is free of dust or contaminants.

  • Place the top cover on the CAMM2 memory module.
    Illustration showing how to install the top cover
  • Tighten the three captive screws twice in the order as shown below. To prevent screws from loosing, ensure you tighten screws twice.
Illustration showing how to install the top cover
When tightening the screws:
  • Use the correct type of Phillips-head screwdriver (#PH1).
  • Press down the screwdriver with your palm to prevent the screwdriver from coming off. Otherwise, it might cause screw stripping.
Illustration showing how to use the screwdriver

Troubleshooting

  • Memory module replacement might cause memory retraining. For details, see “Detect memory retraining (for Intel models only)” in PDF version.
  • If the computer does not start up after replacement, check whether the three captive screws of the top cover are tightened firmly. If not, tighten screws firmly. Boot failure might not occur immediately after the replacement if screws are not tightened correctly.

CAMM2 memory module

Follow the instructions to replace the CAMM2 memory module.

Before you start, read Generic Safety and Compliance Notices and print the following instructions.

Do not touch the contact area of the memory module. Touch only the edge of the memory module.

Illustration of contact edge of the memory module

For access, do the following:

  1. Disable Fast Startup and the built-in battery. See Disable Fast Startup and the built-in battery.
  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.
  4. Remove the base cover assembly. See Base cover assembly.
  5. Remove the CAMM2 top cover. See CAMM2 top cover.

Part location

Illustration of CAMM2 location
Step 1
Remove the memory module as shown below.
Illustration of how to remove the memory module
Step 2

Install the memory module as shown below.

Before installing, ensure the memory module compartment is free of dust or contaminants.

Illustration of how to install the memory module

Troubleshooting

  • Memory module replacement might cause memory retraining. For details, see “Detect memory retraining (for Intel models only)” in PDF version.
  • If the computer does not start up after replacement, check whether the three captive screws of the top cover are tightened firmly. If not, tighten screws firmly. Boot failure might not occur immediately after the replacement if screws are not tightened correctly.

CAMM2 connector

Follow the instructions to replace the CAMM2 memory module.

Before you start, read Generic Safety and Compliance Notices and print the following instructions.

  • Do not touch the pin area of the connector.
  • Do not touch the touch pad area of the system board.
Illustration of pin area of the connector

For access, do the following:

  1. Disable Fast Startup and the built-in battery. See Disable Fast Startup and the built-in battery.
  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.
  4. Remove the base cover assembly. See Base cover assembly.
  5. Remove the CAMM2 top cover. See CAMM2 top cover.
  6. Remove the CAMM2 memory module. See CAMM2 memory module.

Part location

Illustration of CAMM2 location
Step 1
Remove the connector as shown below.
Illustration of how to remove the connector
Step 2
Install the connector as shown below.
  • Before installing, ensure the memory module compartment is free of dust or contaminants.
  • The connector has direction. Ensure that the cut-off corner is aligned with the marking on the system board.
Illustration of how to install the connector

Troubleshooting

  • Memory module replacement might cause memory retraining. For details, see “Detect memory retraining (for Intel models only)” in PDF version.
  • If the computer does not start up after replacement, check whether the three captive screws of the top cover are tightened firmly. If not, tighten screws firmly. Boot failure might not occur immediately after the replacement if screws are not tightened correctly.

M.2 solid-state-drive and M.2 solid-state drive bracket

Follow the instructions to replace the M.2 solid-state-drive and M.2 solid-state drive bracket.

Before you start, read Generic Safety and Compliance Notices and print the following instructions.

  • If you replace a M.2 solid-state drive, you might need to install a new operating system. For details on how to install a new operating system, see “Install a Windows operating system and drivers” in PDF version.
  • If your computer is installed with the color profiles, you need to reinstall the color profiles after installing a new operating system, see “Use the factory color calibration feature (for selected models)” in PDF version.

The M.2 solid-state drive is sensitive. Inappropriate handling might cause damage and permanent loss of data.

When handling the M.2 solid-state drive, observe the following guidelines:

  • Replace the M.2 solid-state drive only for repair. The M.2 solid-state drive is not designed for frequent changes or replacement.
  • Before replacing the M.2 solid-state drive, make a backup copy of all the data that you want to keep.
  • Do not apply pressure to the M.2 solid-state drive.
  • Do not touch the contact edge or circuit board of the M.2 solid-state drive. Otherwise, the M.2 solid-state drive might get damaged.
  • Do not subject the M.2 solid-state drive to physical shocks or vibration. Put the M.2 solid-state drive on a soft material, such as cloth, to absorb physical shocks.

Depending on the model, your computer might have two M.2-solid-state-drive slots. When you configure the M.2-solid-state-drive slot in the UEFI BIOS menu, ensure that you select the correct menu item.

  • Slot a: NVMe0
  • Slot b: NVMe1
M.2 SSD slot no#

Special notices for M.2 solid-state-drive thermal pad

Before you replace a M.2 solid-state drive, observe the following tips to ensure you use the proper thermal pad:

Illustration showing the thin thermal pad
  • To replace a single-sided M.2 solid-state drive with a dual-sided M.2 solid-state drive, ensure that you replace the thick thermal pad (thickness: 2.25 mm) with a thin thermal pad (thickness: 0.8 mm) in section 1 (the section far from the M.2 solid-state drive slot).
  • To replace a dual-sided M.2 solid-state drive with a single-sided M.2 solid-state drive, ensure that you replace the thin thermal pad (thickness: 0.8 mm) with a thick thermal pad (thickness: 2.25 mm) in section 1 (the section far from the M.2 solid-state drive slot).
  • For dual-sided M.2 solid-state drive, ensure that you use a thin thermal pad (thickness: 0.8 mm) in section 1.
  • For single-sided M.2 solid-state drive, ensure that you use a thick thermal pad (thickness: 2.25 mm) in section 1.

For access, do the following:

  1. Disable Fast Start up and the built-in battery. See Disable Fast Startup and the built-in battery.
  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.
  4. Remove the base cover assembly. See Base cover assembly.

For Lenovo supported M.2 solid-state drive Gen 4, only 4 TB models are dual-sided. Other models are single-sided.

Step 1
Remove the M.2 solid-state-drive and M.2 solid-state drive bracket as shown below.
Remove the drive and bracket
Step 2
Install the M.2 solid-state-drive and M.2 solid-state drive bracket in reverse order.

Speaker assembly

Follow the instructions to replace the speaker assembly.

Before you start, read Generic Safety and Compliance Notices and print the following instructions.

For access, do the following:

  1. Disable Fast Start up and the built-in battery. See Disable Fast Startup and the built-in battery.
  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.
  4. Remove the base cover assembly. See Base cover assembly.
Step 1
Remove the speaker assembly as shown below.
Detach the connector. Then remove the speaker assembly
Step 2
Install the speaker assembly in reverse order.