Aboutthismanual
ThismanualcontainsserviceandreferenceinformationforthefollowingThinkPad®products.
ThinkPadT520andT520i
MT4239,4240,4241,4242,4243,4244,and4246
ThinkPadW520
MT4249,4260,4270,4276,4281,4282,and4284
Usethismanualalongwiththeadvanceddiagnostict eststotroubleshootproblems.
Important:ThismanualisintendedonlyfortrainedservicetechnicianswhoarefamiliarwithThinkPad
products.Usethismanualalongwiththeadvanceddiagnosticteststotroubleshootproblemseffectively.
BeforeservicingaThinkPadproduct,besur etoreadalltheinformationunderSafetyinformationand
Importantserviceinformation.
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