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Table9.Partslist—Overall(continued)
No.
FRU(Overall)
FRUno.
CRUID
L7x,L8x,L9x,LAx,LBx,LCx,LDx,LEx,LFx,LGx,LHx,LJx,LKx,LLx,LMx,
LNx,LPx,LQx,LRx,LSx,LTx,LUx,LVx,LWx,LXx,LYx,LZx,M2x,M3x,M4x,
M5x,M6x,M7x,M8x,M9x,MBx,MCx,MDx,MEx,MGx,MHx,MJx,MKx,
MLx,MNx,MPx,MQx,MRx,MSx,MTx,MUx,MVx,MWx,MXx,MYx,MZx,
N2x,N3x,N4x,N5x,N6x,N7x,N8x,NBx,NCx,NDx,NEx,NFx,PAx,PBx,PCx,
PDx,PEx,PFx,PGx,PHx,PKx,PLx,PMx,PNx,PPx,PQx,PTx,PUx,PVx,
PWx,PXx,PYx,PZx,Q2x,Q3x,Q6x,Q7x,Q8x,Q9x
•4236-CTO,62x,63x,64x,MBx,N2x,N3x,N4x,N5x,N6x,N7x,N8x,N9x,NAx,
NBx,NCx,NDx,NEx,NFx,NGx,NHx,NKx,NLx,NMx,NNx,NPx,NQx,NRx,
NSx,NTx,NUx,NWx,NXx,NYx,P3x,P4x,P5x,P6x,P7x,P8x,P9x,PAx,
PBx,PCx,PDx,PEx,PGx,PHx,PJx,PLx,PMx,PPx,PQx,PSx,PTx,PUx,
PVx,PWx,PXx,PYx
•4237-CTO
•4238-CTO
13
Batterypack,Li-ion(6-cell)26+
•4177-CTO
•4178-CTO
•4179-CTO
•4180-CTO
•4236-CTO
•4237-CTO
•4238-CTO
42T4817
42T4819
*
13
Batterypack,Li-ion(9-cell)55++
•4177-CTO,Q3x,Q4x,Q7x,QBx,QFx
•4178-CTO,58x,6Px,6Vx,6Wx,A4x,C5x,C6x,CAx
•4179-CTO
•4180-CTO,65x,KZx,MAx,MFx,MMx,N9x,NAx,PRx,PSx,Q4x,Q5x
•4236-CTO,65x,NVx,P2x,PFx,PKx,PNx,PRx
•4237-CTO
•4238-CTO
42T4799
42T4801
42T4912
*
14Basecoverassembly
•4177-CTO
•4178-CTO
•4179-CTO
•4180-CTO
•4236-CTO
•4237-CTO
•4238-CTO
04W1626N
14
Basecoverassembly(Taiwan90W)
•4177-CTO,RRx,RSx,RTx,RUx
•4178-CTO,5Fx,5Hx,9Hx,9Jx,9Kx,9Lx,9Mx,9Nx,A5x,A6x,A7x,BUx,BVx,
BXx,CKx,CLx,CMx,CNx,CPx,CQx
•4179-CTO
•4180-CTO,64x,65x,MMx
•4236-CTO,64x,65x,NVx,PRx
•4237-CTO
•4238-CTO
04W1627N
14
Basecoverassembly(Taiwan65W)
•4177-CTO,QMx
•4178-CTO,5Bx,5Dx,5Kx,66x,67x,68x,9Fx,9Gx,BWx
•4179-CTO
•4180-CTO,62x,63x,MBx,MNx,PAx
•4236-CTO,62x,63x,MBx,NHx,NUx,PAx
•4237-CTO
•4238-CTO
04W1628N
138ThinkPadT420andT420iHardwareMaintenanceManual
- 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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