User Manual

Chapter 8. Help and support . . . . . 59
Frequently asked questions . . . . . . . . . . 59
Error messages . . . . . . . . . . . . . . . 60
Beep errors . . . . . . . . . . . . . . . . 61
Self-help resources . . . . . . . . . . . . . 62
Call Lenovo . . . . . . . . . . . . . . . . 63
Before you contact Lenovo . . . . . . . . 63
Lenovo Customer Support Center . . . . . . 63
Purchase additional services. . . . . . . . . . 64
Appendix A. Important safety
information . . . . . . . . . . . . . . . 65
Appendix B. Accessibility and ergonomic
information . . . . . . . . . . . . . . . 79
Appendix C. Supplemental
information about the Ubuntu operating
system . . . . . . . . . . . . . . . . . 83
Appendix D. Compliance
information . . . . . . . . . . . . . . . 85
Appendix E. Notices and
trademarks . . . . . . . . . . . . . . . 99
ii X390 Yoga User Guide