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Lenovo ThinkPad Edge E525 Hardware Maintenance Manual

Lenovo ThinkPad Edge E525
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Note:Thecomputerdoesnotacceptanyinputimmediatelyafteritenterssleep(standby)mode.Waita
fewsecondsbeforetakinganyactiontoreenteroperationmode.
Hibernationmode
Inhibernationmode,thefollowingoccurs:
Thesystemstatus,RAM,VRAM,andsetupdataarestoredontheharddisk.
Thesystemispoweredoff.
Ifyouhavedenedoneofthefollowingactionsastheeventthatcausesthesystemtogointohibernation
mode,performthataction.
Closingthelid.
Pressingthepowerbutton.
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”onpage46
“Errormessages”onpage46
“No-beepsymptoms”onpage46
“LCD-relatedsymptoms”onpage47
“Intermittentproblems”onpage47
“Undeterminedproblems”onpage47
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”onpage47
.
Note:ForadevicenotsupportedbydiagnosticcodesintheThinkPadnotebookcomputers,seethe
manualforthatdevice.
Chapter4.Relatedserviceinformation45
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Lenovo ThinkPad Edge E525 Specifications

General IconGeneral
BrandLenovo
ModelThinkPad Edge E525
CategoryLaptop
LanguageEnglish

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