This document is a user guide for ThinkPad T420 and T420i. It includes safety information, product overview, introduction to computer controls, interfaces and indicators, and important product information.
This manual provides safety information, an overview of the computer’s ports and indicators, and detailed instructions for using the ThinkPad T420/T420i. It includes sections on power management, battery handling, and using built‑in features such as UltraNav and multimedia components.
Additional chapters cover system updates, troubleshooting, and procedures for upgrading components like the battery, storage, and wireless adapters. The document also contains regulatory and compliance statements required for the product. This manual is written in Chinese.
Press the Fn + F4 key combination to activate sleep (standby) mode.
Press the Fn + F12 key combination to activate hibernate mode.
The manual contains important safety information, warnings, and regulatory statements for safe use of the laptop.