Call Lenovo . . . . . . . . . . . . . . . . 63
Before you contact Lenovo . . . . . . . . 63
Lenovo Customer Support Center . . . . . . 63
Purchase additional services. . . . . . . . . . 64
Appendix A. Important safety
information . . . . . . . . . . . . . . . 65
Safety notices . . . . . . . . . . . . . . . 65
Important information about using your
computer . . . . . . . . . . . . . . . . . 65
Conditions that require immediate action . . . . . 67
Service and upgrades . . . . . . . . . . . . 68
Power cords and power adapters . . . . . . . . 69
Extension cords and related devices. . . . . . . 69
Plugs and outlets . . . . . . . . . . . . . . 70
Power supply statement . . . . . . . . . . . 70
External devices . . . . . . . . . . . . . . 70
General battery notice . . . . . . . . . . . . 71
Notice for built-in rechargeable battery. . . . . . 71
Lithium coin-cell battery notice . . . . . . . . . 71
Heat and product ventilation . . . . . . . . . . 73
Electrical current safety information . . . . . . . 74
Liquid crystal display (LCD) notice . . . . . . . 75
Use headphones or earphones . . . . . . . . . 75
Choking hazard notice . . . . . . . . . . . . 75
Plastic bag notice . . . . . . . . . . . . . . 75
Glass parts notice . . . . . . . . . . . . . . 76
Static electricity prevention . . . . . . . . . . 76
Operating environment . . . . . . . . . . . . 76
Cleaning and maintenance . . . . . . . . . . 77
Appendix B. Accessibility and
ergonomic information . . . . . . . . 79
Accessibility information . . . . . . . . . . . 79
Ergonomic information . . . . . . . . . . . . 81
Appendix C. Supplemental
information about the Ubuntu operating
system . . . . . . . . . . . . . . . . . 83
Appendix D. Compliance
information . . . . . . . . . . . . . . . 85
Radio frequency compliance statements . . . . . 85
Wireless-related information . . . . . . . . 85
European Union — compliance with the Radio
Equipment Directive . . . . . . . . . . . 86
Brazil . . . . . . . . . . . . . . . . . 86
Mexico . . . . . . . . . . . . . . . . 87
Singapore . . . . . . . . . . . . . . . 87
Korea . . . . . . . . . . . . . . . . . 87
Environmental information of countries and
regions . . . . . . . . . . . . . . . . . . 87
Recycling and environmental information . . . 87
Important WEEE information . . . . . . . . 87
Japan recycling statements . . . . . . . . 88
Recycling information for Brazil . . . . . . . 89
Battery recycling information for the European
Union . . . . . . . . . . . . . . . . . 89
Recycling information for China . . . . . . . 90
Battery recycling information for Taiwan . . . 90
Battery recycling information for the United
States and Canada. . . . . . . . . . . . 90
Restriction of Hazardous Substances (RoHS)
Directive of countries and regions . . . . . . 91
Electromagnetic emission notices. . . . . . . . 93
Federal Communications Commission (FCC)
Supplier’s Declaration of Conformity . . . . . 93
FCC ID and IC Certification information . . . . 94
Industry Canada compliance statement . . . 94
European Union conformity . . . . . . . . 94
German Class B compliance statement. . . . 95
Japan VCCI Class B compliance statement . . 95
Japan compliance statement for products
which connect to the power mains with rated
current less than or equal to 20 A per phase . . 95
Japan notice for ac power cord . . . . . . . 95
Other compliance information . . . . . . . . . 95
Certification-related information . . . . . . 95
Regulatory labels . . . . . . . . . . . . 96
TCO certification . . . . . . . . . . . . 96
Export classification notice . . . . . . . . 96
Lenovo product service information for
Taiwan . . . . . . . . . . . . . . . . 96
Taiwan precautionary vision statement . . . . 96
Eurasian compliance mark. . . . . . . . . 96
Brazil audio notice . . . . . . . . . . . . 97
ENERGY STAR model information. . . . . . 97
Appendix E. Notices and
trademarks . . . . . . . . . . . . . . . 99
ii L390, L390 Yoga, S2 4th Gen, and S2 Yoga 4th Gen User Guide
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