Contents
Aboutthismanual...........iii
Chapter1.Safetyinformation......1
Generalsafety................1
Electricalsafety...............1
Safetyinspectionguide............2
Handlingdevicesthataresensitivetoelectrostatic
discharge..................3
Groundingrequirements............4
Safetynotices(multilingualtranslations)......4
Chapter2.Importantservice
information..............19
StrategyforreplacingFRUs.........19
Strategyforreplacingaharddiskdriveora
solid-statedrive............19
Importantnoticeforreplacingasystem
board................20
Howtouseerrormessage........20
StrategyforreplacingFRUsforCTO,specialbid
model,andstandardmodels.........20
Productdenition............20
FRUidentication............21
Chapter3.Generalcheckout.....23
Whattodorst..............23
Checkoutguide..............24
LenovoSolutionCenter.........24
Quicktestprograms...........24
UEFIdiagnosticprogram.........25
Bootablediagnosticprograms.......25
Powersystemcheckout...........26
Checkingtheacpoweradapter......26
Checkingthebuilt-inbatteryandoperational
charging...............27
Checkingthebackupbattery.......27
Chapter4.Relatedservice
information..............29
Restoringthefactorycontentsbyusingthe
RecoveryDiscSet.............29
UsingtheWindowsrecoveryprogramsonthe
Windows8operatingsystem.........30
Passwords................31
Power-onpassword...........31
Harddiskpassword...........31
Supervisorpassword..........32
Howtoremovethepower-onpassword...32
Howtoremovetheharddiskpassword...32
Powermanagement............33
Screenblankmode(fortheWindows7
operatingsystemonly)..........33
Sleepmode..............33
Hibernationmode...........34
Symptom-to-FRUindex...........34
Numericerrorcodes..........35
Errormessages............36
Beepsymptoms............36
No-beepsymptoms...........37
LCD-relatedsymptoms.........37
Intermittentproblems..........37
Undeterminedproblems.........38
Chapter5.Statusindicators.....39
Chapter6.Functionkeys.......41
Chapter7.Locations.........43
Locatingcomputercontrols,connectors,and
indicators.................43
Frontview...............43
Rearview...............44
Bottomview..............44
LocatingFRUsandCRUs..........45
MajorFRUs..............46
LCDFRUs..............47
MiscellaneouspartsandotherFRUs....48
LookingupFRUinformation.........48
Chapter8.FRUreplacement
notices................49
Screwnotices...............49
Retainingserialnumbers...........50
Restoringtheserialnumberofthesystem
unit.................50
RetainingtheUUID...........51
ReadingorwritingtheECAinformation...51
Chapter9.Removingorreplacinga
FRU..................53
Generalguidelines.............53
Beforeservicingthecomputer........54
Disablingthebuilt-inbattery.......54
1010LenovoOneLinkconnectorcover.....54
1020Basecover..............54
1030Harddiskdriveorsolid-statedrive....56
1040WirelessLANcard...........58
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