Contents
Aboutthismanual...........iii
Chapter1.Safetyinformation......1
Generalsafety................1
Electricalsafety...............2
Safetyinspectionguide............3
Handlingdevicesthataresensitivetoelectrostatic
discharge..................3
Groundingrequirements............4
Safetynotices(multilingualtranslations)......4
Chapter2.Importantservice
information..............21
StrategyforreplacingFRUs.........21
Strategyforreplacingaharddiskdrive...22
Importantnoticeforreplacingasystem
board................22
Howtouseerrormessage........22
StrategyforreplacingFRUsforCTO,CMV,and
GAV...................22
Productdenition............22
FRUidentication............23
Chapter3.Generalcheckout.....25
Whattodorst..............25
Checkoutguide..............26
LenovoSolutionCenter.........26
Quicktestprograms...........26
UEFIdiagnosticprogram.........27
Bootablediagnosticprograms.......27
Powersystemcheckout...........28
Checkingtheacpoweradapter......28
Checkingoperationalcharging......29
Checkingthebatterypack........29
Checkingthebackupbattery.......29
Chapter4.Relatedservice
information..............31
Restoringthefactorycontentsbyusingthe
RecoveryDiscSet.............31
RecoveryoverviewfortheWindows8operating
system..................32
Refreshingyourcomputer........32
Resettingyourcomputertothefactorydefault
settings................32
Usingtheadvancedstartupoptions....33
RecoveringyourcomputerfromtheWindows
recoveryenvironment..........33
Creatingandusingrecoverymedia.....33
Passwords................34
Power-onpassword...........35
Harddiskpassword...........35
Supervisorpassword..........35
Howtoremovethepower-onpassword...35
Howtoremovetheharddiskpassword...36
Powermanagement............36
Screenblankmode(fortheWindows7
operatingsystemonly)..........36
Sleepmode..............36
Hibernationmode...........37
Symptom-to-FRUindex...........37
Numericerrorcodes..........38
Errormessages............38
No-beepsymptoms...........39
Beepsymptoms............39
LCD-relatedsymptoms.........40
Intermittentproblems..........40
Undeterminedproblems.........40
Chapter5.Statusindicators.....43
Chapter6.Specialkeys........45
Chapter7.Locations.........47
Locatingcomputercontrols,connectors,and
indicators.................47
Frontview...............47
Rearview...............48
Bottomview..............48
LocatingFRUsandCRUs..........48
MajorFRUsandCRUs..........50
LCDFRUsandCRUs..........52
MiscellaneouspartsandotherFRUs....54
LookingupFRUinformation.........54
Chapter8.FRUreplacement
notices................55
Screwnotices...............55
Retainingserialnumbers...........56
Restoringtheserialnumberofthesystem
unit.................56
RetainingtheUUID...........57
ReadingorwritingtheECAinformation...57
Chapter9.Removingorreplacinga
FRU..................59
Beforeservicingthecomputer........60
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