About This Manual - Lenovo B490 Hardware Maintenance Manual

About this manual

This manual provides service and reference information for the following Lenovo
Machine
Lenovo B490
Use this manual to troubleshoot problems.
The manual is divided into the following sections:
• The common sections provide general information, guidelines, and safety information required for
servicing computers.
• The product-specific section includes service, reference, and product-specific parts information.
Important:
• This manual is intended only for trained service technicians who are familiar with Lenovo products. Use
this manual to troubleshoot problems effectively.
• Before servicing a Lenovo product, be sure to read all the information under Chapter 1 "Safety
information" on page 1 and Chapter 2 "Important service information" on page 27.
© Copyright Lenovo 2012
Machine type (MT)
3756, 3772, 20205, 20207
®
products.
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