This manual covers the ThinkPad T420 and T420i laptops, including product overview, safety guidelines, hardware configuration, and operating instructions. It explains how to power on the device, use the keyboard, trackpad, ports, and built‑in features such as ThinkVantage tools.
Additional sections describe battery management, upgrading components, troubleshooting common problems, and proper disposal and recycling of the laptop in accordance with environmental regulations.
Press Fn+F4 to set the machine into sleep (standby) mode.
Press Fn+F12 to set the machine into hibernate mode.