User's Guide
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 information
- Appendix E. Notices and trademarks
5. Install the new base cover assembly in place 1 and tighten the screws to secure the base cover
assembly
2 .
6. Turn over the computer. Connect the ac power adapter and all disconnected cables to the computer.
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.
Wireless WAN card (for selected models)
The following information is only for the computer with user-installable modules.
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 61 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.
Replacement procedure
1. Disable the built-in battery. See “Disable Fast Startup and the built-in battery” on page 45.
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” on page 46.
Chapter 7. CRU replacement 47