Lenovo ThinkPad E550 (English) Hardware Maintenance Manual - ThinkPad E550, E5 - Page 5

About this manual, ThinkPad E550, Machine type MT 20DF Tx and 20DG Rx, Machine type MT 20DH

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About this manual This manual contains service and reference information for the following ThinkPad® product: ThinkPad E550 ThinkPad E555 ThinkPad E550c Machine type (MT) 20DF (Tx) and 20DG (Rx) Machine type (MT) 20DH Machine type (MT) 20E0 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 iii

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About this manual
This manual contains service and reference information for the following ThinkPad
®
product:
ThinkPad E550
Machine type (MT) 20DF (Tx) and 20DG (Rx)
ThinkPad E555
Machine type (MT) 20DH
ThinkPad E550c
Machine type (MT) 20E0
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
iii