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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
FRUidenticationforCTO,CMV,andGAV
products...............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
RestoringthefactorycontentsbyusingRecovery
DiscSet.................31
Passwords................32
Power-onpassword...........32
Hard-diskpassword...........32
Supervisorpassword..........33
Howtoremovethepower-onpassword...33
Howtoremovethehard-diskpassword...33
Powermanagement............34
Screenblankmode...........34
Sleepmode..............34
Hibernationmode...........35
Symptom-to-FRUindex...........35
Numericerrorcodes..........36
Errormessages............37
No-beepsymptoms...........37
Beepsymptoms............37
LCD-relatedsymptoms.........37
Intermittentproblems..........38
Undeterminedproblems.........38
Chapter5.Statusindicators.....41
Chapter6.Functionkey
combinations.............43
Chapter7.Locations.........45
Locatingcomputercontrols,connectors,and
indicators.................45
Frontview...............45
Rearview...............46
Bottomview..............46
LocatingFRUsandCRUs..........46
MajorFRUsandCRUs..........48
LCDFRUsandCRUs..........50
LookingupFRUinformation.........51
Chapter8.FRUreplacement
notices................53
Screwnotices...............53
Retainingserialnumbers...........54
Restoringtheserialnumberofthesystem
unit.................54
RetainingtheUUID...........55
ReadingorwritingtheECAinformation...55
Chapter9.Removingorreplacinga
FRU..................57
Generalguidelines.............57
Beforeservicingthecomputer........58
DisablingthebatterypackintheUEFIBIOS.58
RemovingtheSIMcard.........58
1010Bottomcover.............58
1020Batterypack.............60
1030Harddiskdriveorsolid-statedrive
assembly.................61
1040Keyboard..............63
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