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About this manual
This manual provides service and reference information for the following Lenovo
®
products.
Machine
Machine type (MT)
Lenovo E49 3464
ZhaoYang E49 20161, 20162, 20178
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-specic sections include service, reference, and product-specic 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
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