This document is a user guide for ThinkPad T420 and T420i, providing information on safety instructions, warranty statements, and regulatory notices.
This guide covers safety precautions, hardware identification, and basic operation of the ThinkPad T420 and T420i laptops. It includes sections on power management, battery handling, keyboard and touchpad use, and the various ThinkVantage utilities.
Later chapters describe how to replace components such as the battery, hard drive, and memory, as well as how to install operating systems, update BIOS, and resolve common hardware and software issues. Appendices contain regulatory information and recycling notices. This manual is written in French.
Press the Fn + F4 keys to place the computer in sleep mode.
Press the Fn + F12 keys to place the computer in hibernation.
Power off the computer, use a sturdy case, and avoid placing it in a tight bag.