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
DiagnosticsusingPC-DoctorforDOS....32
LenovoThinkVantageToolbox.......34
FRUtests...............35
Powersystemcheckout...........36
Checkingtheacpoweradapter......36
Checkingoperationalcharging......37
Checkingthebatterypack........37
Checkingthebackupbattery.......38
Chapter4.Relatedservice
information..............39
RestoringthefactorycontentsbyusingRecovery
DiscSet.................39
Passwords................40
Power-onpassword...........40
Hard-diskpassword...........40
Supervisorpassword..........41
Howtoremovethepower-onpassword...41
Howtoremovethehard-diskpassword...41
Powermanagement............42
Screenblankmode...........42
Sleep(standby)mode..........42
Hibernationmode...........43
Symptom-to-FRUindex...........43
Numericerrorcodes..........44
Errormessages............44
No-beepsymptoms...........44
LCD-relatedsymptoms.........45
Intermittentproblems..........45
Undeterminedproblems.........45
Chapter5.Statusindicators.....47
Chapter6.Specialkeys........49
Chapter7.FRUreplacement
notices................51
Screwnotices...............51
Retainingserialnumbers...........52
Restoringtheserialnumberofthesystem
unit.................52
RetainingtheUUID...........53
ReadingorwritingtheECAinformation...53
Chapter8.Removingandreplacinga
FRU..................55
BeforeservicingThinkPadEdgeE520models..55
1010Batterypack.............56
1020ExpressCardblankbezel........57
1030Opticaldriveortravelcover.......58
1040Bottomslotcover...........59
1050Memorymodules...........60
1060Harddiskdriveassembly........61
1070PCIExpressMiniCardforwirelessLAN..62
1080PCIExpressMiniCardforwirelessWANfor
ThinkPadEdgeE520models.........64
1080mSATAsolidstatedriveforThinkPadEdge
E520models...............65
1090Backupbattery............66
1110Keyboard..............67
1120Topcaseassembly...........69
1130Bluetoothdaughtercard........72
1140Expresssubcard...........73
1150Speakerassembly...........74
1160Systemboardassemblyandfanassembly.75
1170CPU................82
1180DC-insubcardandbasecoverassembly..83
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