Tocausethecomputertoenterhibernationmode,doanyofthefollowing:
•PresstheFn+F12keys.
•Ifyouhavedenedoneofthefollowingactionsastheeventthatcausesthesystemtogointohibernation
mode,performthataction.
–Closingthelid.
–Pressingthepowerbutton.
–PressingFn+F4keys.
Also,thecomputergoesintohibernationmodeautomaticallyineitherofthefollowingconditions:
•Ifa“hibernationtime”hasbeensetonthetimer,andiftheuserdoesnotdoanyoperationwiththe
keyboard,theTrackPoint,theharddiskdrive,theparallelconnector ,orthediskettedrivewithinthattime.
•Ifthetimerconditionsaresatisedinsuspendmode.
Whenthepoweristurnedon,thecomputerreturnsfromhibernationmodeandresumesoperation.The
hibernationleinthebootrecordontheharddiskdriveisread,andsystemstatusisrestoredfromthe
harddiskdrive.
Symptom-to-FRUindex
Thissectioncontainsfollowinginformation:
•“Numericerrorcodes”onpage43
•“Errormessages”onpage47
•“Beepsymptoms”onpage48
•“No-beepsymptoms”onpage49
•“LCD-relatedsympt oms”onpage49
•“Intermittentproblems”onpage49
•“Undeterminedproblems”onpage50
Thesymptom-to-FRUindexinthissectionlistssymptomsanderrorsandtheirpossiblecauses.Themost
likelycauseislistedrst,inboldfacetype.
Note:DotheFRUreplacementorotheractionsinthesequenceshowninthecolumnheaded“FRUor
action,insequence.”IfreplacingaFRUdoesnotsolvetheproblem,puttheoriginalpartbackinthe
computer.DonotreplaceanondefectiveFRU.
Thisindexcanalsohelpyoudetermine,duringregularservicing,whatFRUsarelikelytoneedtobe
replacednext.
AnumericerrorisdisplayedforeacherrordetectedinPOSTorsystemoperation.Inthedisplays,ncan
beanynumber.
Ifnonumericcodeisdisplayed,checkthenarrativedescriptionsofsymptoms.Ifthesymptomisnot
describedthere,goto“Intermittentproblems”onpage49.
Note:ForadevicenotsupportedbydiagnosticcodesintheThinkPadNotebooks,seethemanualforthatdevice.
42ThinkPadX220TabletandX220iTabletHardwareMaintenanceManual