ThinkPad L420, L421 and L520 User Guide, introduces the features and characteristics of this product, including appearance, functional components, specifications, operating environment and so on.
This manual provides safety guidelines, warranty information, and detailed instructions for using the ThinkPad L420, L421, and L520 series. It includes chapters on hardware overview, operating system setup, power management, component replacement, and troubleshooting.
The document also explains how to use ThinkVantage tools, configure BIOS settings, and access Lenovo support resources online. This manual is written in Chinese.
Press Fn+F4 to activate the sleep (standby) mode.
Press Fn+F12 to activate the hibernate (sleep) mode.