About This Manual - Lenovo Ideapad E490 Hardware Maintenance Manual

About this manual

This manual contains service and reference information for the following ThinkPad
ThinkPad R490
ThinkPad E490
Use this manual along with the advanced diagnostic tests to troubleshoot problems.
Important: This manual is intended only for trained service technicians who are familiar with ThinkPad
products. Use this manual along with the advanced diagnostic tests to troubleshoot problems effectively.
Before servicing a ThinkPad product, be sure to read all the information under Chapter 1 "Safety information"
on page 1 and Chapter 2 "Important service information" on page 21.
© Copyright Lenovo 2018
Machine type (MT) 20NA
Machine types (MT) 20N8 and 20N9
®
products.
iii