About This Manual - Lenovo B40-30 Hardware Maintenance Manual

About this manual

This manual contains service and reference information for the following
Lenovo product:
Use this manual to troubleshoot problems.
The manual is divided into the following sections:
• The common sections provide general information, guidelines, and safety
• The product-specific section includes service, reference, and product-specific
iv
Lenovo B40-30/B40-45/B40-70/B40-80
information required for servicing computers.
parts information.
Important:
This manual is intended only for trained servicers who are familiar with
Lenovo products. Use this manual to troubleshoot problems effectively.
Before servicing a Lenovo product, make sure to read all the information
under "Safety information" on page 1 and "Important service information"
on page 16.