Contents
Aboutthismanual...........iii
Chapter1.Safetyinformation.....1
Generalsafety................1
Electricalsafety...............2
Safetyinspectionguide............3
Handlingdevicesthataresensitivetoelectrostatic
discharge..................3
Groundingrequirements............4
Safetynotices(multilingualtranslations)......4
Chapter2.Importantservice
information..............19
StrategyforreplacingFRUs.........19
Strategyforreplacingaharddiskdrive...20
Importantnoticeforreplacingasystem
board................20
Howtouseerrormessage........20
StrategyforreplacingFRUsforCTO,CMV,and
GAV...................20
Productdenition............20
FRUidenticationforCTO,CMV,andGAV
products...............21
Chapter3.Generalcheckout.....23
Whattodorst..............23
Checkoutguide..............24
DiagnosticsusingPC-DoctorforDOS....24
LenovoThinkVantageToolbox.......26
FRUtests...............27
Powersystemcheckout...........28
Checkingtheacpoweradapter......28
Checkingoperationalcharging......29
Checkingthebatterypack........29
Checkingthebackupbattery.......29
Chapter4.Relatedservice
information..............31
RestoringthefactorycontentsbyusingRecovery
DiscSet.................31
Passwords................32
Power-onpassword...........32
Hard-diskpassword...........32
Supervisorpassword..........33
Howtoremovethepower-onpassword...33
Howtoremovethehard-diskpassword...33
Powermanagement............34
Screenblankmode...........34
Sleep(standby)mode..........34
Hibernationmode...........35
Symptom-to-FRUindex...........35
Numericerrorcodes..........36
Errormessages............36
No-beepsymptoms...........37
LCD-relatedsymptoms.........37
Intermittentproblems..........37
Undeterminedproblems.........38
Chapter5.Statusindicators.....39
Chapter6.Specialkeys........41
Chapter7.FRUreplacement
notices................43
Screwnotices...............43
Retainingserialnumbers...........44
Restoringtheserialnumberofthesystem
unit.................44
RetainingtheUUID...........44
ReadingorwritingtheECAinformation...45
Chapter8.Removingandreplacinga
FRU..................47
BeforeservicingThinkPadEdgeE220s.....47
1000DisablingthebatterypackinUEFIBIOS..48
1010Harddiskdriveorsolidstatedrive
assembly.................48
1020Keyboard..............50
1030Topcaseassembly...........52
1040Backupbattery............54
1050Speakerassembly...........55
1080Batterypack.............56
1090DIMM................57
1100PCIExpressMiniCardforwirelessLAN..58
1110PCIExpressMiniCardforwirelessWAN..59
1120Bluetoothdaughtercard........60
1130Systemboardassemblyandfanassembly.62
1140DC-insubcard............65
1150LCDunit...............67
Chapter9.Locations.........71
Frontview................71
Rearview.................72
Bottomview...............72
Chapter10.Partslist.........73
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