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,special-bid,
andstandardmodels............20
Productdefinition............20
FRUidentification...........20
Chapter3.Generalcheckout.....23
Whattodofirst..............23
Checkoutguide..............24
LenovoSolutionCenter.........24
Quicktestprograms...........24
UEFIdiagnosticprogram.........25
Bootablediagnosticprograms.......25
Powersystemcheckout...........26
Checkingtheacpoweradapter......27
Checkingoperationalcharging......27
Checkingtheexternalbatterypack.....27
Checkingthecoin-cellbattery.......28
Chapter4.Relatedservice
information..............29
Restoringthefactorycontentsbyusingthe
productRecoveryDiscSet..........29
UsingtheWindowsrecoveryprogramsonthe
Windows8andWindows8.1operatingsystems.30
Passwords................33
Power-onpassword...........33
Harddiskpassword...........34
Supervisorpassword..........34
Powermanagement............34
Screenblankmode(fortheWindows7
operatingsystemonly)..........35
Sleepmode..............35
Hibernationmode...........35
Symptom-to-FRUindex...........36
Numericerrorcodes..........36
Errormessages............37
Beepsymptoms............38
No-beepsymptoms...........39
LCD-relatedsymptoms.........39
Intermittentproblems..........39
Undeterminedproblems.........40
Chapter5.Statusindicators.....41
Chapter6.Functionkeysand
combinations.............43
Chapter7.Locations.........45
Locatingcomputercontrols,connectors,and
indicators.................45
Frontview...............45
Left-sideview.............46
Bottomview..............46
LocatingFRUsandCRUs..........46
MajorFRUs..............48
LCDFRUs..............50
MiscellaneouskitsandotherFRUs.....52
LookingupFRUinformation.......53
Chapter8.FRUreplacement
notices................55
Screwnotices...............55
Retainingserialnumbers...........56
Restoringtheserialnumberofthesystem
unit.................56
RetainingtheUUID...........57
ReadingorwritingtheECAinformation...57
Chapter9.Removingorreplacinga
FRU..................59
Generalguidelines.............59
Beforeservicingthecomputer........60
Disablingthebuilt-inbattery.......60
Removingthemicro-SIM-cardtray.....60
1010Removablebatterypack........61
1020Basecoverassembly..........61
1030Internalbatterypack..........63
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