About This Manual - Lenovo M4350 Hardware Maintenance Manual

About this manual

®
This manual provides service and reference information for Lenovo desktop computers listed on the
front cover.
Chapter 6 "Symptom-to-FRU index" on page 55 and Chapter 9 "Additional service information" on page 105
are not specific to any machine type and are applicable to all Lenovo desktop computers.
For major Field Replaceable Units (FRU) locations and Customer Replaceable Unit (CRU) identification,
see Chapter 7 "Locations" on page 61.
For FRU replacement instructions, see Chapter 8 "Replacing FRUs" on page 69.
For FRU part numbers, go to:
http:/www.lenovo.com/serviceparts-lookup
Important: This manual is intended only for trained service technicians who are familiar with Lenovo
desktop computers. Use this manual along with the advanced diagnostic tests to troubleshoot problems
effectively. Before servicing a Lenovo desktop computer, be sure to read and understand Chapter 1 "Safety
information" on page 1.