Note:Ifthecomputerentersthehibernationmodewhileitisdockedtothedockingstation,donotundockit
beforeresumingnormaloperation.Ifyoudoundockitandthentrytoresumenormaloperation,youwillget
anerrormessage,andyouwillhavetorestartthesystem.
Tocausethecomputertoenterhibernationmode,doanyofthefollowing:
•PresstheFn+F12keys.
•Ifyouhavedefinedoneofthefollowingactionsastheeventthatcausesthesystemtogointohibernation
mode,performthataction.
–Closingthelid.
–Pressingthepowerbutton.
–PressingFn+F4keys.
Also,thecomputergoesintohibernationmodeautomaticallyineitherofthefollowingconditions:
•Ifa“hibernationtime”hasbeensetonthetimer,andiftheuserdoesnotdoanyoperationwiththe
keyboard,theTrackPoint,theharddiskdrive,theparallelconnector,orthediskettedrivewithinthattime.
•Ifthetimerconditionsaresatisfiedinsuspendmode.
Whenthepoweristurnedon,thecomputerreturnsfromhibernationmodeandresumesoperation.The
hibernationfileinthebootrecordontheharddiskdriveisread,andsystemstatusisrestoredfromthe
harddiskdrive.
Symptom-to-FRUindex
Thissectioncontainsfollowinginformation:
•“Numericerrorcodes”onpage53
•“Errormessages”onpage54
•“Beepsymptoms”onpage54
•“No-beepsymptoms”onpage55
•“LCD-relatedsymptoms”onpage55
•“Intermittentproblems”onpage56
•“Undeterminedproblems”onpage56
Thesymptom-to-FRUindexinthissectionlistssymptomsanderrorsandtheirpossiblecauses.Themost
likelycauseislistedfirst,inboldfacetype.
Note:DotheFRUreplacementorotheractionsinthesequenceshowninthecolumnheaded“FRUor
action,insequence.”IfreplacingaFRUdoesnotsolvetheproblem,puttheoriginalpartbackinthe
computer.DonotreplaceanondefectiveFRU.
Thisindexcanalsohelpyoudetermine,duringregularservicing,whatFRUsarelikelytoneedtobe
replacednext.
AnumericerrorisdisplayedforeacherrordetectedinPOSTorsystemoperation.Inthedisplays,ncan
beanynumber.
Ifnonumericcodeisdisplayed,checkthenarrativedescriptionsofsymptoms.Ifthesymptomisnot
describedthere,goto“Intermittentproblems”onpage56
.
Note:ForadevicenotsupportedbydiagnosticcodesintheThinkPadNotebooks,seethemanualfor
thatdevice.
52HardwareMaintenanceManual
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