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Chapter 1. About this manual
®
This manual provides service and reference information for Lenovo
computers listed on the front cover.
This manual is intended only for trained service personnel who are familiar with Lenovo computer products.
Before servicing a Lenovo computer product, be sure to read Chapter 2 "Safety information" on page 3.
Chapter 7 "Symptom-to-FRU index" on page 59 and Chapter 11 "Additional service information" on page 99
are not specific to any machine type. These chapters are applicable to all Lenovo H520g computers.
For major FRU locations and Customer Replaceable Unit (CRU) identification, see Chapter 8 "Locations"
on page 65.
For FRU replacement instructions, see Chapter 9 "Replacing FRUs" on page 71.
Important safety information
Be sure to read all caution and danger statements in this manual before performing any of the instructions.
Veuillez lire toutes les consignes de type DANGER et ATTENTION du présent document avant d'exécuter
les instructions.
Lesen Sie unbedingt alle Hinweise vom Typ "ACHTUNG" oder "VORSICHT" in dieser Dokumentation, bevor
Sie irgendwelche Vorgänge durchführen
Leggere le istruzioni introdotte da ATTENZIONE e PERICOLO presenti nel manuale prima di eseguire una
qualsiasi delle istruzioni
Certifique-se de ler todas as instruções de cuidado e perigo neste manual antes de executar qualquer
uma das instruções
Es importante que lea todas las declaraciones de precaución y de peligro de este manual antes de seguir
las instrucciones.
© Copyright Lenovo 2013
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Troubleshooting
