Contents
Aboutthismanual...........iii
Chapter1.Safetyinformation.....1
Generalsafety...............1
Electricalsafety..............2
Safetyinspectionguide...........3
Handlingdevicesthataresensitivetoelectrostatic
discharge.................3
Groundingrequirements...........4
Safetynotices(multilingualtranslations).....4
Chapter2.Importantservice
information..............19
StrategyforreplacingFRUs.........19
Strategyforreplacingaharddiskdrive...20
Importantnoticeforreplacingasystem
board................20
Howtouseerrormessage........20
StrategyforreplacingFRUsforCTO,CMV,and
GAV...................20
Productdenition............20
FRUidenticationforCTO,CMV,andGAV
products...............21
Chapter3.Generalcheckout.....23
Whattodorst..............23
Checkoutguide..............24
LenovoSolutionCenter.........24
Quicktestprograms...........24
UEFIdiagnosticprogram.........25
Bootablediagnosticprograms.......25
Powersystemcheckout...........26
Checkingtheacpoweradapter......26
Checkingoperationalcharging......27
Checkingthebatterypack........27
Checkingthebackupbattery.......28
Chapter4.Relatedservice
information..............29
RestoringthefactorycontentsbyusingProduct
Recoverydiscs..............29
RestoringthefactorycontentsbyusingRecovery
DiscSet.................29
Passwords................31
Power-onpassword...........31
Harddiskpassword...........31
Supervisorpassword..........31
Howtoremovethepower-onpassword...31
Howtoremovetheharddiskpassword...32
Powermanagement............32
Screenblankmode...........32
Sleepmode..............33
Hibernationmode...........33
Symptom-to-FRUindex...........34
Numericerrorcodes..........34
Errormessages............35
No-beepsymptoms...........35
LCD-relatedsymptoms.........35
Intermittentproblems..........36
Undeterminedproblems.........36
Chapter5.Statusindicators.....39
Chapter6.Specialkeys........41
Chapter7.Locations.........43
Locatingcomputercontrols,connectors,and
indicators.................43
Frontview...............43
Rearview...............44
Bottomview..............44
LocatingFRUsandCRUs..........45
MajorFRUsandCRUs..........46
LCDFRUs..............48
Chapter8.FRUreplacement
notices................49
Screwnotices...............49
Retainingserialnumbers...........50
Restoringtheserialnumberofthesystem
unit.................50
RetainingtheUUID...........51
ReadingorwritingtheECAinformation...51
Chapter9.Removingorreplacinga
FRU..................53
Generalguidelines.............53
Beforeservicingyourcomputer........54
RemovingtheSIMcard.........54
1010Batterypack.............54
1020Bottomcover.............55
1030Memorymodule............56
1040Harddiskdriveorsolid-statedrive....57
1050PCIExpressMiniCardforwirelessLAN..59
1060PCIExpressHalfMiniCardforwirelessWAN
ormSATAsolid-statedrive..........61
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