Contents
Aboutthismanual...........iii
Chapter1.Safetyinformation......1
Generalsafety................1
Electricalsafety...............2
Safetyinspectionguide............3
Handlingdevicesthataresensitivetoelectrostatic
discharge..................3
Groundingrequirements............4
Safetynotices(multilingualtranslations)......4
Lasercompliancestatement(multilingual
translations)................19
Chapter2.Importantservice
information..............27
StrategyforreplacingFRUs.........27
Strategyforreplacingaharddiskdrive...28
Importantnoticeforreplacingasystem
board................28
Howtouseerrormessage........28
StrategyforreplacingFRUsforCTO,CMV,and
GAV...................28
Productdenition............28
FRUidenticationforCTO,CMV,andGAV
products...............29
Chapter3.Generalcheckout.....31
Whattodorst..............31
Checkoutguide..............32
SystemsupportingtheLenovoThinkVantage
ToolboxprogramandthePC-DoctorforDOS
diagnosticsprogram..........32
SystemsupportingtheLenovodiagnostics
programs...............36
Powersystemcheckout...........38
Checkingtheacpoweradapter......38
Checkingoperationalcharging......39
Checkingthebatterypack........39
Checkingthebackupbattery.......40
Chapter4.Relatedservice
information..............41
RestoringthefactorycontentsbyusingRecovery
DiscSet.................41
Passwords................42
Power-onpassword...........42
Hard-diskpassword...........42
Supervisorpassword..........43
Howtoremovethepower-onpassword...43
Howtoremovethehard-diskpassword...43
Powermanagement............44
Screenblankmode...........44
Sleep(standby)mode..........44
Hibernationmode...........45
Symptom-to-FRUindex...........45
Numericerrorcodes..........46
Errormessages............46
No-beepsymptoms...........46
LCD-relatedsymptoms.........47
Intermittentproblems..........47
Undeterminedproblems.........47
Chapter5.Statusindicators.....49
Chapter6.Specialkeys........51
Chapter7.FRUreplacement
notices................53
Screwnotices...............53
Retainingserialnumbers...........54
Restoringtheserialnumberofthesystem
unit.................54
RetainingtheUUID...........55
ReadingorwritingtheECAinformation...55
Chapter8.Removingandreplacinga
FRU..................57
BeforeservicingThinkPadEdgeE520models..57
1010Batterypack.............58
1020ExpressCardblankbezel........59
1030Opticaldriveortravelcover.......60
1040Bottomslotcover...........61
1050Memorymodules...........62
1060Harddiskdriveassembly........63
1070PCIExpressMiniCardforwirelessLAN..64
1080PCIExpressMiniCardforwirelessWANfor
ThinkPadEdgeE520models.........66
1080mSATAsolidstatedriveforThinkPadEdge
E520models...............67
1090Backupbattery............68
1110Keyboard..............69
1120Topcaseassembly...........71
1130Bluetoothdaughtercard........74
1140Expresssubcard...........75
1150Speakerassembly...........76
1160Systemboardassemblyandfanassembly.77
1170CPU................84
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