
Contents
Aboutthimanual...........iii
Chapter1.Safetyinformation......1
Generalsafety................1
Electricalsafety...............2
Safetyinspectionguide............3
Handlingdevicesthataresensitivetoelectrostatic
discharge..................3
Groundingrequirements............4
Safetynotices(multilingualtranslations)......4
Lasercompliancestatement(multilingual
translations)................18
Chapter2.Importantervice
information..............25
StrategyforreplacingFRUs.........25
Strategyforreplacingaharddiskdriveora
solid-statedrive............25
Importantnoticeforreplacingasystem
board................26
Howtouseerrorcodes.........26
StrategyforreplacingFRUsforCTO,special-bid,
andstandardmodels............26
Productdefinition............26
FRUidentification...........26
Chapter3.Generalcheckout.....29
Whattodofirst..............29
Checkoutguide..............30
LenovoSolutionCenter.........30
Quicktestprograms...........30
UEFIdiagnosticprogram.........31
Bootablediagnosticprograms.......32
Powersystemcheckout...........33
Checkingtheacpoweradapter......33
Checkingoperationalcharging......33
Checkingthebatterypack........34
Checkingthecoin-cellbattery.......34
Chapter4.Relatedervice
information..............37
RecoveryoverviewfortheWindows10operating
system..................37
Resettingyourcomputer.........37
Usingadvancedstartupoptions......37
RecoveringyouroperatingsystemifWindows
10failstostart.............38
CreatingandusingarecoveryUSBdrive..38
Passwords................38
Power-onpassword...........39
Harddiskpassword...........39
Supervisorpassword..........39
Howtoremovethepower-onpassword...39
Howtoremovetheharddiskpassword...40
Powermanagement............40
Sleepmode..............40
Hibernationmode...........41
Symptom-to-FRUinde...........41
Numericerrorcodes..........42
Errormessages............43
Beepsymptoms............44
No-beepsymptoms...........44
LCD-relatedsymptoms.........44
Intermittentproblems..........45
Undeterminedproblems.........45
Chapter5.Statuindicator.....47
Chapter6.Specialkey........49
Chapter7.Location.........51
Locatingcomputercontrols,connectors,and
indicators.................51
Frontview...............51
Rearview...............52
Bottomview..............52
LocatingFRUsandCRUs..........52
MajorFRUsandCRUs..........54
LCDFRUsandCRUs..........56
Connectorandcableguide........56
LookingupFRUinformation.........61
Chapter8.FRUreplacement
notice................63
Screwnotices...............63
Retainingserialnumbers...........64
Restoringtheserialnumberofthesystem
unit.................64
RetainingtheUUID...........65
Chapter9.Removingorreplacinga
FRU..................67
Generalguidelines.............67
1010Batterypack.............68
1020Bottomcover.............68
1030M.2solid-statedrive..........69
1040Opticaldriveoroptical-drivebaybezel...70
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