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
Strategyforreplacingaharddiskdrive,a
hybriddrive,orasolid-statedrive.....19
Importantnoticeforreplacingasystem
board................20
Howtouseerrormessage........20
StrategyforreplacingFRUsforCTO,specialbid
model,andstandardmodels.........20
Productdefinition............20
FRUidentification............20
Chapter3.Generalcheckout.....23
Whattodofirst..............23
Checkoutguide..............24
LenovoSolutionCenter.........24
Quicktestprograms...........24
UEFIdiagnosticprogram.........25
Bootablediagnosticprograms.......26
Powersystemcheckout...........26
Checkingtheacpoweradapter......27
Checkingthebuilt-inbatteryandoperational
charging...............27
Checkingthecoin-cellbattery.......28
Chapter4.Relatedservice
information..............29
Restoringthefactorycontentsbyusingthe
RecoveryDiscSet.............29
RecoveryoverviewfortheWindows10operating
system..................30
Resettingyourcomputer.........30
Usingadvancedstartupoptions......30
RecoveringyouroperatingsystemifWindows
10failstostart.............31
CreatingandusingarecoveryUSBdrive..31
Passwords................32
Power-onpassword...........32
Harddiskpassword...........32
Supervisorpassword..........32
Howtoremovethepower-onpassword...32
Howtoremovetheharddiskpassword...33
Powermanagement............33
Screenblankmode(fortheWindows7
operatingsystemonly)..........33
Sleepmode..............34
Hibernationmode...........34
Symptom-to-FRUindex...........35
Numericerrorcodes..........35
Errormessages............36
Beepsymptoms............37
No-beepsymptoms...........37
LCD-relatedsymptoms.........37
Intermittentproblems..........38
Undeterminedproblems.........38
Chapter5.Statusindicators.....39
Chapter6.Functionkeys.......41
Chapter7.Locations.........43
Locatingcomputercontrols,connectors,and
indicators.................43
Frontview...............43
Left-sideview.............44
Bottomview..............44
LocatingFRUsandCRUs..........45
MajorFRUs..............46
LCDFRUs..............48
MiscellaneouspartsandotherFRUs....49
Connectorandcableguide........49
LookingupFRUinformation.........53
Chapter8.FRUreplacement
notices................55
Screwnotices...............55
Retainingserialnumbers...........56
Restoringtheserialnumberofthesystem
unit.................56
RetainingtheUUID...........57
Chapter9.Removingorreplacinga
FRU..................59
Generalguidelines.............59
Beforeservicingthecomputer........60
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