About this manual
This manual contains service and reference information for the following ThinkPad® products.
ThinkPad X121e
Machine types (MT) 3045, 3048, 3049, 3051, 3053, 3055
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 19.
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