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User Guide

CRU List

The following is a list of CRUs of your computer.

Self-service CRUs

  • ac power adapter*
  • Base cover assembly
  • Memory module
  • Nano-SIM-card tray*
  • Power cord*
  • Lenovo Precision Pen 2*

Optional-service CRUs

  • Coin-cell battery
  • M.2 solid state drive Gen 3*
  • M.2 solid state drive Gen 4*
  • M.2 solid state drive bracket (for selected models of M.2 solid state drive Gen 4 only)
  • Speaker assembly
  • Wireless WAN card*
  • Wireless WAN card bracket* (for selected models)

* for selected models

Note: Replacement of any parts not listed above, including the built-in rechargeable battery, must be done by a Lenovo-authorized repair facility or technician. Go to https://support.lenovo.com/partnerlocator 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:

  1. Go to Control Panel and view by Large icons or Small icons.
  2. Click Power Options, and then click Choose what the power buttons do on the left pane.
  3. Click Change settings that are currently unavailable at the top.
  4. If prompted by User Account Control (UAC), click Yes.
  5. Clear the Turn on fast startup check box, and then click Save changes.

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.

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”.
  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

Installation procedure

Troubleshooting

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.

M.2 solid-state drive and M.2 solid-state drive bracket (for selected models)

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

Attention:

  • 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)”.

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 make the M.2 solid-state drive subject 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 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

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:

Note: Locate the spare thermal pad(s) in the carton box. Peel off the protection film on the new thermal pad before use.

  • 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: 2.5 mm) with a thin thermal pad (thickness: 1.25 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: 1.25 mm) with a thick thermal pad (thickness: 2.5 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: 1.25 mm) in section 1 .
  • For single-sided M.2 solid-state drive, ensure that you use a thick thermal pad (thickness: 2.5 mm) in section 1 .

For access, do the following:

  1. Disable 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”.

Removal procedure for M.2 solid-state drive Gen 4 and bracket (for selected models)

Removal procedure for M.2 solid-state drive Gen 3

Wireless WAN card and wireless-WAN-card bracket (for selected models)

The following information is only for the computer with user-installable modules. Ensure that you use only a Lenovo-authorized wireless module specifically tested for this computer model. Otherwise, the computer will generate an error-code beep sequence when you turn on the computer.

Prerequisite

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

Attention: Do not touch the contact edge of the wireless WAN card. Otherwise, the wireless WAN card might get damaged.

For access, do the following:

  1. Disable 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”.

Removal procedure

Type 1

When installing: Ensure you plug the blue cable into connector D/G, the black/grey cable into connector M2,the white/grey cable into connector M1,and orange cable into connector M marked on the wireless WAN card.

Removal procedure

Type 2 (with wireless WAN card bracket)

When installing:

  • Before installing a wireless WAN card, peel off the protection film (if any) on the thermal pad in the wireless WAN card slot.
  • Ensure you plug the blue cable into connector D and the orange cable into connector M marked on the wireless WAN card.

Memory module

Prerequisite

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

Attention: Do not touch the contact edge of the memory module. Otherwise, the memory module might get damaged.

For access, do the following:

  1. Disable 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 the computer over.
  4. Remove the base cover assembly. See “Base cover assembly”.

Removal procedure

Note: A Mylar film might cover the memory modules. To access the memory modules, peel off the film first.

Installation procedure

If you only install one memory module, install it in memory slot a.

Speaker assembly

Prerequisite

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

For access, do the following:

  1. Disable 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 the computer over.
  4. Remove the base cover assembly. See “Base cover assembly”.

Removal procedure

Coin-cell battery

Prerequisite

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

For access, do the following:

  1. Disable 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 the computer over.
  4. Remove the base cover assembly. See “Base cover assembly”.

Note: Depending on model, a mylar might cover the coin-cell battery. To access the coin-cell battery, peel off the mylar first.

Note: After replacement, reset the system date and time in the UEFI BIOS menu. See “Set the system date and time”.