User Manual
Table Of Contents
- Discover your Lenovo computer
- Chapter 1. Meet your computer
- Chapter 2. Get started with your computer
- Chapter 3. Explore your computer
- Chapter 4. Secure your computer and information
- Chapter 5. UEFI BIOS
- What is UEFI BIOS
- Enter the BIOS menu
- Navigate in the BIOS interface
- Change the display language of UEFI BIOS
- Change the display mode of UEFI BIOS (for selected models)
- Set the system date and time
- Change the boot priority order
- Enable or disable the configuration change detection feature
- Enable or disable the automatic power-on feature
- Enable or disable the smart power-on feature (for selected models)
- Change the ITS performance mode
- Change BIOS settings before installing a new operating system
- Update UEFI BIOS
- Recover from a BIOS update failure
- Clear CMOS
- Chapter 6. Troubleshooting, diagnostics, and recovery
- Chapter 7. CRU replacement
- CRU list
- Remove or replace a CRU
- Power adapter and power cord
- External Wi-Fi antenna
- Vertical stand
- VESA mount bracket
- External optical drive box and external optical drive
- Dust shield
- Computer cover
- Internal speaker
- System fan
- Coin-cell battery
- PCIe card and PCIe converter
- Wi-Fi card and Wi-Fi card shield
- Bottom cover
- M.2 solid-state drive
- Memory module
- Chapter 8. Help and support
- Appendix A. System memory speed
- Appendix B. Accessibility and ergonomic information
- Appendix C. Supplemental information about the Ubuntu operating system
- Appendix D. Compliance information
- Appendix E. Notices and trademarks
Before you open the computer cover, turn off the computer and wait several minutes until the computer is
cool.
For access, do the following:
1. Turn off the computer and remove all connected devices and cables.
2. Disconnect the computer from ac power and all connected cables.
3. Unlock any locking device that secures the computer cover.
4. Remove these parts in order, if any:
• “External Wi-Fi antenna” on page 27
• “Vertical stand” on page 27
• “VESA mount bracket” on page 28
• “External optical drive box and external optical drive” on page 29
Removal steps
Internal speaker
Prerequisite
Before you start, read Generic Safety and Compliance Notices, and print the following instructions.
For access, do the following:
1. Remove the computer cover.See “Computer cover” on page 32.
2. Disconnect the internal speaker cable from the internal speaker connector on the system board.
Chapter 7. CRU replacement 33