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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
  • Power cord*
  • Nano-SIM-card tray*
  • 2242 M.2 solid-state drive
  • 2242 M.2 solid-state drive bracket
  • Wireless WAN card*

* 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

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.

2242 M.2 solid-state drive and bracket

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”.

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.

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

Wireless WAN card (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 the computer over.
  4. Remove the base cover assembly. See “Base cover assembly”.

Removal procedure (for WWAN card with four antennas)

Note: A Mylar film might cover the wireless WAN card. To access the wireless WAN card, peel off the film first.

Installation procedure (for WWAN card with four antennas)

Note: During installation, ensure that you connect the cables with different colors to the corresponding connectors on the card according to the illustrations above: the orange cable to the connector labeled ORANGE, the blue cable to the connector labeled BLUE, the white and grey cable to the connector labeled WHITE GREY, and the black and grey cable to the connector labeled BLACK GREY.

Removal procedure (for WWAN card with two antennas)

Installation procedure (for WWAN card with two antennas)

Note: During installation, ensure that you connect the cables with different colors to the corresponding connectors on the card according to the illustrations above: the orange cable to the connector labeled ORANGE, the blue cable to the connector labeled BLUE.