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Table9.Partslist—Overall(continued)
No.
FRU(Overall)
FRUno.
CRUID
22
CPUassembly,IntelPentiumB950(2.10GHz)
•4177-CTO,GFx,GKx,GLx,GMx
•4178-CTO
•4179-CTO
•4180-CTO
•4236-CTO
•4237-CTO
•4238-CTO
04W1895N
22
CPUassembly,IntelPentiumB940(2.0GHz)
•4177-CTO,QQx,QRx,QSx
•4178-CTO,AQx,ARx
•4179-CTO
•4180-CTO
•4236-CTO
•4237-CTO
•4238-CTO
04W1894N
23Backupbattery02K7078
04W1642
**
24
SmartCardReaderFPCcable
•4177-CTO,2Fx,2Gx,2Hx,Q7x,Q8x,QAx,QBx,QPx,R9x,RBx,RCx,RLx,
RMx,RRx,RSx,RTx,RUx
•4178-CTO,5Lx,5Mx,5Nx,5Px,5Qx,5Rx,5Sx,5Tx,5Ux,5Vx,5Wx,5Xx,
5Yx,5Zx,66x,67x,68x,6Ax,6Bx,6Cx,6Dx,6Ex,6Fx,6Gx,6Qx,6Rx,6Xx,
6Yx,6Zx,92x,93x,94x,95x,96x,97x,98x,99x,9Ax,9Bx,9Cx,AEx,AXx,
AYx,AZx,B2x,B3x,B4x,BDx,BEx,BFx,BHx,BJx,BMx,BNx,BPx,BQx,
BRx,BUx,BZx,C3x,C4x,C5x,C6x,CBx,CFx,CHx,CKx,CLx,CMx,CNx,
CPx,CQx,CXx,CYx
•4179-CTO,GXx
•4180-CTO,KEx,KFx,L9x,LAx,LBx,LPx,LQx,LVx,LXx,M8x,MCx,MDx,MEx,
MRx,MSx,MZx,N2x,NFx,PBx,PCx,PUx,PVx,PWx,PXx,PYx,PZx,Q3x
•4236-CTO,N3x,NDx,NEx,PDx,PJx,PKx,PMx,PPx,PQx
•4237-CTO
•4238-CTO
04W1639N
25
SmartCardReader
•4177-CTO,2Fx,2Gx,2Hx,Q7x,Q8x,QAx,QBx,QPx,R9x,RBx,RCx,RLx,
RMx,RRx,RSx,RTx,RUx
•4178-CTO,5Lx,5Mx,5Nx,5Px,5Qx,5Rx,5Sx,5Tx,5Ux,5Vx,5Wx,5Xx,5Yx,
5Zx,66x,67x,68x,6Ax,6Bx,6Cx,6Dx,6Ex,6Fx,6Gx,6Qx,6Rx,6Xx,6Yx,
6Zx,92x,93x,94x,95x,96x,97x,98x,99x,9Ax,9Bx,9Cx,A5x,A6x,A7x,AEx,
AXx,AYx,AZx,B2x,B3x,B4x,BDx,BEx,BFx,BHx,BJx,BMx,BNx,BPx,BQx,
BRx,BUx,BVx,BWx,BXx,BZx,C3x,C4x,C5x,C6x,CBx,CFx,CHx,CKx,
CLx,CMx,CNx,CPx,CQx,CXx,CYx
•4179-CTO,GXx
•4180-CTO,KEx,KFx,L9x,LAx,LBx,LPx,LQx,LVx,LXx,M8x,MCx,MDx,
MEx,MRx,MSx,MZx,N2x,NDx,NEx,NFx,PBx,PCx,PUx,PVx,PWx,PXx,
PYx,PZx,Q3x
•4236-CTO,N3x,NDx,NEx,PDx,PJx,PKx,PMx,PPx,PQx
•4237-CTO
•4238-CTO
04W1638
04W2084
N
146ThinkPadT420andT420iHardwareMaintenanceManual
- ThinkPadT420andT420i 1
- HardwareMaintenanceManual 1
- FourthEdition(November2011) 2
- ©CopyrightLenovo2011 2
- Contents 3
- Chapter9.Locations........125 4
- AppendixA.Notices.........167 4
- Aboutthismanual 5
- Chapter1.Safetyinformation 7
- Electricalsafety 8
- Safetyinspectionguide 9
- Groundingrequirements 10
- Chapter1.Safetyinformation5 11
- .Safetyinformation7 13
- Chapter1.Safetyinformation9 15
- Chapter1.Safetyinformation11 17
- .Safetyinformation13 19
- .Safetyinformation15 21
- Chapter1.Safetyinformation17 23
- .Safetyinformation19 25
- .Safetyinformation21 27
- StrategyforreplacingFRUs 29
- Howtouseerrormessage 30
- Productdenition 31
- Chapter3.Generalcheckout 33
- Whattodorst 34
- Checkoutguide 35
- LenovoThinkVantageT oolbox 37
- FRUtests 39
- Powersystemcheckout 40
- Checkingtheacpoweradapter 40
- Checkingoperationalcharging 40
- Checkingthebatterypack 41
- Checkingthebackupbattery 41
- Voltage(Vdc) 42
- Red+2.5to+3.2 42
- Passwords 44
- Power-onpassword 44
- Hard-diskpassword 44
- Supervisorpassword 45
- Powermanagement 47
- Screenblankmode 47
- Sleep(standby)mode 47
- Hibernationmode 47
- Symptom-to-FRUindex 49
- Numericerrorcodes 49
- Errormessages 51
- Beepsymptoms 52
- No-beepsymptoms 52
- LCD-relatedsymptoms 52
- .Relatedserviceinformation47 53
- Intermittentproblems 54
- Undeterminedproblems 54
- Chapter5.Statusindicators 55
- .Statusindicators51 57
- Chapter6.Fnkeycombinations 59
- .Fnkeycombinations55 61
- Screwnotices 63
- Retainingserialnumbers 64
- RetainingtheUUID 65
- 1010Batterypack 69
- 1020ExpressCardblankbezel 70
- 3tocompletelyremoveit 71
- Capturescrew(1) 72
- 1050DIMMslotcover 75
- 1080Keyboard 79
- Installationstepsofkeyboard 80
- 1.Attachthekeyboardconnector 80
- .RemovingandreplacingaFRU75 81
- 1100Backupbattery 85
- .RemovingandreplacingaFRU85 91
- .RemovingandreplacingaFRU87 93
- 1130SmartCard 94
- 1140Modemdaughtercard(MDC) 96
- 1150Speakerassembly 97
- 1160LCDunit 99
- StepScrew(quantity)Color 100
- Black0.181Nm 100
- (1.85kgfcm) 100
- Black0.392Nm 101
- (4.0kgfcm) 101
- 1170Fanassembly 103
- 3tosecuretheCPU 107
- .RemovingandreplacingaFRU103 109
- 1200Magnesiumstructureframe 112
- .RemovingandreplacingaFRU107 113
- 1220mSATAsolidstatedrive 116
- .RemovingandreplacingaFRU111 117
- 2010LCDbezelassembly 118
- 2020LEDboard 119
- 2030Integratedcamera 121
- 2040LCDpanelandLCDcable 123
- 2050Cameracable 125
- .RemovingandreplacingaFRU121 127
- .RemovingandreplacingaFRU123 129
- Chapter9.Locations 131
- Rearview 133
- Bottomview 134
- Chapter10.Partslist 135
- .Partslist131 137
- .Partslist133 139
- .Partslist135 141
- .Partslist137 143
- .Partslist139 145
- .Partslist141 147
- .Partslist143 149
- .Partslist145 151
- .Partslist147 153
- .Partslist149 155
- .Partslist151 157
- .Partslist153 159
- Keyboard 160
- .Partslist155 161
- Miscellaneousparts 162
- .Partslist157 163
- Powercords 165
- Recoverydiscs 166
- Chapter10.Partslist161 167
- Chapter10.Partslist163 169
- Chapter10.Partslist165 171
- Commonservicetools 172
- AppendixA.Notices 173
- Electronicemissionsnotices 174
- Trademarks 175
- *0A60007_03* 178
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