Replace a CRU
Follow the instructions to replace the base cover assembly.
Before you start, read Generic Safety and Compliance Notices.
- When your computer has the removable battery installed
- When your computer is connected to ac power
- Disable Fast Startup and the built-in battery. See Before you replace any CRU.
- Turn off the computer and disconnect the computer from ac power and all connected cables.
- Close the computer display and turn over the computer.
Tool needed:
- Philips head screwdriver
| Step | Screw (quantity) | Color | Recommended Torque |
|---|---|---|---|
| 1a | M2 × 8 mm, flat-head, captive (1) | Black | 0.18 +/- 0.015Nm (1.85 +/- 0.15 kgf-cm) |
| 1b | M2 × 6.2 mm, flat-head, captive (1) | Black | 0.18 +/- 0.015Nm (1.85 +/- 0.15 kgf-cm) |
| 1c | M2.5 × 7.5 mm, flat-head, captive (2) | Black | 0.29 +/- 0.03Nm (3 +/- 0.3 kgf-cm) |
| 1d | M2 × 6.2 mm, flat-head, captive (2) | Black | 0.18 +/- 0.015Nm (1.85 +/- 0.15 kgf-cm) |

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.
- 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).
- 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.
- Slot a : NVMe0
- Slot b : NVMe1
- 1. Disable Fast Start up and the built-in battery. See Before you replace any CRU.
- 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 | Screw (quantity) | Color | Recommended Torque |
|---|---|---|---|
| 1 | M2 × 3.5 mm, flat-head, captive (4) | Silver | 0.18 +/- 0.015Nm (1.85 +/- 0.15 kgf-cm) |
Follow the instructions to replace the speaker assembly.
Before you start, read Generic Safety and Compliance Notices and print the following instructions.
- 1. Disable Fast Start up and the built-in battery. See Before you replace any CRU.
- 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.
Follow the instructions to replace the built-in battery.
Before you start, read Generic Safety and Compliance Notices.
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.
- 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.
Attention: 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.
- 1. Disable Fast Startup and the built-in battery. See Before you replace any CRU.
- 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.

Step 1. Remove the built-in battery as shown below.

| Step | Screw (quantity) | Color | Torque |
|---|---|---|---|
| 1 | M2 × 7.1 mm, flat-head, captive (6) | Silver | 0.18 +/- 0.015Nm (1.85 +/- 0.15 kgf-cm) |

Step 2. Before installing the built-in battery, thoroughly check the battery compartment and ensure that there are no foreign or sharp objects that could cause damage to the battery.
Step 3. Install the built-in battery in reverse order.
- Ensure that the connector is attached firmly.
- Ensure that the base cover assembly is secured in place. Otherwise, the battery connection might fail.
Follow the instructions to replace the CAMM2 top cover.
Before you start, read Generic Safety and Compliance Notices and print the following instructions.
- 1. Disable Fast Start up and the built-in battery. See Before you replace any CRU.
- 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 | Screw (quantity) | Color | Recommended Torque |
|---|---|---|---|
| 1 | M2 × 5.8 mm, flat-head, captive (3) | Silver | 0.18 +/- 0.015Nm (1.85 +/- 0.15 kgf-cm) |


- 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.
- Memory module replacement might cause memory retraining. For details, see Detect memory retraining.
- 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.
Follow the instructions to replace the CAMM2 memory module.
Before you start, read Generic Safety and Compliance Notices and print the following instructions.
- 1. Disable Fast Start up and the built-in battery. See Before you replace any CRU.
- 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.

- Memory module replacement might cause memory retraining. For details, see Detect memory retraining.
- 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.
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 contact area of the system board.

- 1. Disable Fast Start up and the built-in battery. See Before you replace any CRU.
- 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.
- 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.

- Memory module replacement might cause memory retraining. For details, see Detect memory retraining.
- 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.
Follow the instructions to replace the coin-cell battery.
Before you start, read Generic Safety and Compliance Notices and print the following instructions.
- 1. Disable Fast Start up and the built-in battery. See Before you replace any CRU.
- 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 built-in battery. See Built-in battery.
Follow the instructions to replace the replaceable USB-C module and replaceable USB-C module bracket.
Before you start, read Generic Safety and Compliance Notices and print the following instructions.
- 1. Disable Fast Start up and the built-in battery. See Before you replace any CRU.
- 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 | Screw (quantity) | Color | Recommended Torque |
|---|---|---|---|
| 1 | M2 × 4.75 mm, flat-head, captive (2) | Silver | 0.18 +/- 0.015Nm (1.85 +/- 0.15 kgf-cm) |