
Contents
Aboutthismanualiii
Chapter1Safetyinformation1
Generalsafety...............1
Electricalsafety..............1
Safetyinspectionguide...........2
Handlingdevicesthataresensitivetoelectrostatic
discharge.................3
Groundingrequirements...........4
Safetynotices(multilingualtranslations).....4
Chapter2Importantservice
information19
StrategyforreplacingFRUs.........19
Strategyforreplacingaharddiskdriveora
solid-statedrive............19
Importantnoticeforreplacingasystem
board................20
Howtouseerrormessage........20
StrategyforreplacingFRUsforCTO,special-bid,
andstandardmodels............20
Productdefinition............20
FRUidentification............20
Chapter3Generalcheckout23
Whattodofirst..............23
Checkoutguide..............24
LenovoSolutionCenter.........24
Quicktestprograms...........24
UEFIdiagnosticprogram.........25
Bootablediagnosticprograms.......25
Powersystemcheckout...........26
Checkingtheacpoweradapter......26
Checkingoperationalcharging......27
Checkingtheremovablebattery......27
Checkingthecoin-cellbattery.......28
Chapter4Relatedservice
information29
Restoringthefactorycontentsbyusingthe
productRecoveryDiscSet..........29
RecoveryoverviewfortheWindows10operating
system..................30
Resettingyourcomputer.........30
Usingadvancedstartupoptions......30
RecoveringyouroperatingsystemifWindows
10failstostart.............30
CreatingandusingarecoveryUSBdrive..31
Passwords................31
Power-onpassword...........31
Harddiskpassword...........32
Supervisorpassword..........33
Powermanagement............33
Screenblankmode(fortheWindows7
operatingsystemonly)..........33
Sleepmode..............33
Hibernationmode...........34
Symptom-to-FRUinde...........34
Numericerrorcodes..........35
Errormessages............36
Beepsymptoms............36
No-beepsymptoms...........37
LCD-relatedsymptoms.........37
Intermittentproblems..........37
Undeterminedproblems.........38
Chapter5Statusindicators39
Chapter6Functionkeysand
combinations41
Chapter7Locations43
Locatingcomputercontrols,connectors,and
indicators.................43
Frontview...............43
Left-sideview.............44
Bottomview..............44
LocatingFRUsandCRUs..........44
MajorFRUs..............46
LCDFRUs..............48
Miscellaneousparts...........49
Connectorandcableguide........49
LookingupFRUinformation.........53
Chapter8FRUreplacement
notices55
Screwnotices...............55
Retainingserialnumbers...........56
Restoringtheserialnumberofthesystem
unit.................56
RetainingtheUUID...........57
ReadingorwritingtheECAinformation...57
Chapter9Removingorreplacinga
FRU59
Generalguidelines.............59
Beforeservicingthecomputer........60
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