About this manual
This manual contains service and reference information for the following ThinkPad
ThinkPad L490
ThinkPad L590
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 2019
Machine Types (MT): 20Q5 and 20Q6
Machine Types (MT): 20Q7 and 20Q8
®
products.
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