User's Manual

Beforecheckingproblemswiththecomputer,determinewhetherthedamageiscoveredunderthewarranty

byreferringtothefollowinglist:

Thefollowingarenotcoveredunderwarranty:

•LCDpanelcrackedfromtheapplicationofexcessiveforceorfrombeingdropped

•Scratched(cosmetic)parts

•Distortion,deformation,ordiscolorationofthecosmeticparts

•Plasticparts,latches,pins,orconnectorsthathavebeencrackedorbrokenbyexcessiveforce

•Damagecausedbyliquidspilledintothesystem

•DamagecausedbytheimproperinsertionofaPCCardortheinstallationofanincompatiblecard

•Improperdiscinsertionoruseofanopticaldrive

•Diskettedrivedamagecausedbypressureonthediskettedrivecover,foreignmaterialinthedrive,

ortheinsertionofadiskettewithmultiplelabels

•Damagedorbentdisketteejectbutton

•Fusesblownbyattachmentofanonsupporteddevice

•Forgottencomputerpassword(makingthecomputerunusable)

•Stickykeyscausedbyspillingaliquidontothekeyboard

•Useofanincorrectacadapteronlaptopproducts

Thefollowingsymptomsmightindicatedamagecausedbynonwarrantedactivities:

•Missingpartsmightbeasymptomofunauthorizedserviceormodication.

•Ifthespindleofaharddiskdrivebecomesnoisy,itmayhavebeensubjectedtoexcessiveforce,

ordropped.

Checkoutguide

UsethefollowingproceduresasaguideinidentifyingandcorrectingproblemswiththeThinkPadNotebook.

Note:ThediagnostictestsareintendedtotestonlyThinkPadproducts.Theuseofnon-ThinkPadproducts,

prototypecards,ormodiedoptionscanleadtofalseindicationsoferrorsandinvalidsystemresponses.

1.Identifythefailingsymptomsinasmuchdetailaspossible.

2.Verifythesymptoms.Trytore-createthefailurebyrunningthediagnostictestorbyrepeatingthe

operation.

DiagnosticsusingPC-DoctorforDOS

TheThinkPadNotebookhasatestprogramcalledPC-DoctorforDOS(hereaftercalledPC-Doctor.)Youcan

detecterrorsbyrunningthediagnosticstestincludedinPC-Doctor.

Note:PC-DoctorforDOSisavailableatthefollowingWebsite:http://www.lenovo.com/support

TocreatethePC-DoctordiagnosticCD,followtheinstructionsontheWebsite.

Forsomepossiblecongurationsofthecomputer,PC-Doctormightnotruncorrectly.Toavoidthisproblem,

youneedtoinitializethecomputersetupbyuseoftheThinkPadSetupbeforeyourunPC-Doctor.

ToenterThinkPadSetup,doasfollows:

1.T urnonthecomputer.

2.WhentheThinkPadlogocomesup,immediatelypressF1toentertheThinkPadSetup.

Note:Ifasupervisorpasswordhasbeensetbythecustomer,ThinkPadSetupmenuappearsafterthe

passwordisentered.YoucanstartThinkPadSetupbypressingEnterinsteadofenteringthesupervisor

password;however,youcannotchangetheparametersthatareprotectedbythesupervisorpassword.

28ThinkPadT520,T520i,andW520HardwareMaintenanceManual