About this manual
This manual contains service and reference information for the following ThinkPad
®
products.
ThinkPad X1 Yoga
Machine types (MT): 20QF, 20QG, 20SA and 20SB
ThinkPad X1 Carbon Machine types (MT): 20QD, 20QE, 20R1 and 20R2
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 21.
© Copyright Lenovo 2019 iii
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