About This Manual - Lenovo ThinkPad T420si Hardware Maintenance Manual
Hardware maintenance manual
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Also See for ThinkPad T420si:
- Manual do utilizador (256 pages) ,
- Manual d'utilisation (256 pages) ,
- User manual (252 pages)
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About this manual
®
This manual contains service and reference information for the following ThinkPad
products.
ThinkPad T420s and T420si
Machine types (MT) 4170, 4171, 4172, 4173, 4174, 4175, and 4176
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 31.
© Copyright Lenovo 2012
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