Table of Contents
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About this manual
This manual contains service and reference information for the following ThinkPad
ThinkPad E550
ThinkPad E555
ThinkPad E550c
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 25.
© Copyright Lenovo 2014, 2015
Machine type (MT) 20DF (Tx) and 20DG (Rx)
Machine type (MT) 20DH
Machine type (MT) 20E0
®
product:
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