User's Manual
Table Of Contents
- About this documentation
- Chapter 1. Meet your computer
- Chapter 2. Get started with your computer
- Chapter 3. Explore your computer
- Chapter 4. Accessories
- Chapter 5. Secure your computer and information
- Chapter 6. Configure advanced settings
- Chapter 7. CRU replacement
- Chapter 8. Help and support
- Appendix A. Important safety information
- Appendix B. Accessibility and ergonomic information
- Appendix C. Supplemental information about the Linux operating system
- Appendix D. Compliance and TCO Certified information
- Appendix E. Notices and trademarks
3. Remove the nano-SIM-card tray if your computer comes with one. See “Connect to a cellular network
(for selected models)” on page 17.
4. Remove the base cover assembly. See “Base cover assembly (T14 Gen 1 and P14s Gen 1)” on page 54
or “Base cover assembly (T15 Gen 1 and P15s Gen 1)” on page 56.
5. Detach the connector
1 , and then remove the coin-cell battery 2 .
6. Install the new coin-cell battery 1 , and then attach the connector 2 .
7. Reinstall the base cover assembly and the nano-SIM-card tray.
8. Connect the ac power adapter and all disconnected cables to the computer.
9. Reset the system date and time in the UEFI BIOS menu. See “Set the system date and time” on page 50.
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 Appendix A “Important safety information” on page 83 and print the following
instructions.
Chapter 7. CRU replacement 63