Lenovo ThinkPad W520 4284 Hardware Maintenance Manual

Also see for THINKPAD T520: Deployment guide Deployment guide Guía de despliegue Guide de déploiement Guida alla distribuzione

Contents

Chapter 2. Important service informationThis chapter presents following important service information that applies to all machine types supported bythis manual:• Strategy for replacing FRUs– Strategy for replacing a hard disk drive– Important notice for replacing a system board– How to use error message• Strategy for replacing FRUs for CTO, CMV, and GAV– Product definition– FRU identification for CTO, CMV, and GAV productsImportant: Advise customers to contact the Lenovo Customer Support Center if they need any assistancein obtaining or installing any software fixes, drivers, and UEFI BIOS downloads. Telephone numbers forLenovo Support are available at:http://www.lenovo.com/support/phoneSystem Disassembly/Reassembly videos that show the FRU removals or replacements for the Lenovo®authorized service technicians are available in the following support site:http://www.lenovoservicetraining.com/ion/Advise customers to contact the Customer Support Center at 800-426-7378 if they need assistance inobtaining or installing any software fixes, drivers, and UEFI BIOS downloads.Customers in Canada should call the Customer Support Center at 800-565-3344 for assistance or downloadinformation.Strategy for replacing FRUsBefore replacing parts:Make sure that all software fixes, drivers, and UEFI BIOS downloads are installed before replacing anyFRUs listed in this manual.After a system board is replaced, ensure that the latest UEFI BIOS is loaded to the system board beforecompleting the service action.To download software fixes, drivers, and UEFI BIOS, do as follows:1. Go to http://www.lenovo.com/support.2. Enter the product number of the computer or press Auto-detect button on the screen.3. Select Downloads and drivers.4. Follow the directions on the screen and install the necessary software.Use the following strategy to prevent unnecessary expense for replacing and servicing FRUs:• If you are instructed to replace a FRU but the replacement does not correct the problem, reinstallthe original FRU before you continue.• Some computers have both a processor board and a system board. If you are instructed to replace eitherthe processor board or the system board, and replacing one of them does not correct the problem,reinstall that board, and then replace the other one.© Copyright Lenovo 2011 23