Operation Manual
Table Of Contents
- Important safety information
- Read this first
- Important information about using your computer
- Conditions that require immediate action
- Service and upgrades
- Power cords and power adapters
- Extension cords and related devices
- Plugs and outlets
- Power supply statement
- External devices
- General battery notice
- Notice for built-in rechargeable battery
- Notice for non-rechargeable coin-cell battery
- Heat and product ventilation
- Electrical current safety information
- Liquid crystal display (LCD) notice
- Using headphones or earphones
- Choking hazard notice
- Plastic bag notice
- Glass parts notice
- Chapter 1. Product overview
- Chapter 2. Using your computer
- Registering your computer
- Frequently asked questions
- Operating modes
- Using the multi-touch screen
- Using the special keys
- Using the ThinkPad pointing device
- Power management
- Cabled Ethernet connections
- Wireless connections
- Using audio features
- Using the cameras
- Using a media card
- Using an external display
- Traveling with your computer
- Chapter 3. Enhancing your computer
- Chapter 4. Accessibility, ergonomic, and maintenance information
- Chapter 5. Security
- Chapter 6. Advanced configuration
- Chapter 7. Troubleshooting computer problems
- General tips for preventing problems
- Diagnosing problems with Lenovo Companion
- Troubleshooting
- Computer stops responding
- Spills on the keyboard
- Error messages
- Beep errors
- Memory module problems
- Ethernet problems
- Wireless-LAN problem
- Bluetooth problem
- ThinkPad pointing device problems
- Keyboard problems
- Computer screen problems
- External monitor problems
- Audio problems
- Fingerprint reader problems
- Battery problems
- ac power adapter problem
- Power problems
- Power button problem
- Boot problems
- Sleep and hibernation problems
- Solid-state drive problem
- ThinkPad Pen Pro problem
- Software problem
- USB problem
- Chapter 8. Recovery information
- Chapter 9. Replacing devices
- Chapter 10. Getting support
- Appendix A. Supplemental information about the Ubuntu operating system
- Appendix B. Regulatory information
- Certification-related information
- Wireless-related information
- TCO certification
- Export classification notice
- Electronic emission notices
- Federal Communications Commission Declaration of Conformity
- Industry Canada Class B emission compliance statement
- European Union conformity
- German Class B compliance statement
- Japan VCCI Class B compliance statement
- Japan compliance statement for products which connect to the power mains with rated current less than or equal to 20 A per phase
- Japan notice for ac power cord
- Lenovo product service information for Taiwan
- Eurasian compliance mark
- Brazil audio notice
- Appendix C. WEEE and recycling statements
- Appendix D. Restriction of Hazardous Substances (RoHS) Directive
- Appendix E. ENERGY STAR model information
- Appendix F. Notices
- Appendix G. Trademarks
– Ensure that the link partner is set to auto-negotiate.
– Ensure that the switch is 802.3ab-compliant (gigabit over copper).
Wireless-LAN problem
Problem: I cannot connect to the network using the built-in wireless network card.
Solution: Ensure that:
• The Airplane mode is off.
• Your wireless-LAN driver is the latest version.
• Your computer is within the range of a wireless access point.
• The wireless radio is enabled.
Bluetooth problem
Note: Check your connection anytime and ensure that no other Bluetooth-enabled device is searching for
the device to which you want to connect. Simultaneous searching is not allowed in the Bluetooth connection.
Problem: Sound does not come from the Bluetooth headset/headphones but comes from the local speaker
even though the Bluetooth headset/headphones is connected using a Headset profile or AV profile.
Solution: Do the following:
1. Exit the program that uses the sound device (for example, Windows Media Player).
2. Go to Control Panel, and ensure that you view Control Panel by Category.
3. Click Hardware and Sound ➙ Sound ➙ Playback.
4. If you are using a Headset profile, select Bluetooth Hands-free Audio and click Set Default. If you are
using an AV profile, select Stereo Audio and click Set Default.
5. Click OK to close the Sound window.
ThinkPad pointing device problems
• Problem: The pointer drifts when the computer is turned on or after it resumes normal operation.
Solution: The pointer might drift when you are not using the TrackPoint pointing device during normal
operation. This is a normal characteristic of the TrackPoint pointing device and is not a defect. Pointer
drifting might occur for several seconds under the following conditions:
– When the computer is turned on
– When the computer resumes normal operation
– When the TrackPoint pointing device is kept pressed for a long time
– When the temperature changes
• Problem: The TrackPoint pointing device or trackpad does not work.
Solution: Ensure that the TrackPoint pointing device or trackpad is enabled in the Mouse Properties
window. For more information, see “Customizing the ThinkPad pointing device” on page 25.
Keyboard problems
• Problem: All or some keys on the keyboard do not work.
Solution: If an external numeric keypad is connected:
1. Turn off the computer.
Chapter 7. Troubleshooting computer problems 77