Lenovo THINKCENTRE 804 User Manual Page 28
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- Table of contents
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Toreplacetheheatsinkandfanassembly,dothefollowing:
1.Removeallmediafromthedrivesandturnoffallattacheddevicesandthecomputer.Then,disconnect
allpowercordsfromelectricaloutletsanddisconnectallcablesthatareconnectedtothecomputer.
2.Removethecomputercover.See“Removingthecomputercover”onpage12.
3.Removethefrontbezel.See“Removingandreinstallingthefrontbezel”onpage13.
4.Pivotthedrivebayassemblyupward.Removethetwoscrewsthatsecuretheheatsinkfanductand
thenlifttheheatsinkfanductuptoremoveitfromthechassis.
Figure18.Removingtheheatsinkfanduct
5.Disconnecttheheatsinkandfanassemblycablefromthemicroprocessorfanconnectoronthesystem
board.See“Locatingpartsonthesystemboard”onpage8.
6.Followthissequencetoremovethefourscrewsthatsecuretheheatsinkandfanassemblytothe
systemboard:
a.Partiallyremovescrew1,thenfullyremovescrew2,andthenfullyremovescrew1.
b.Partiallyremovescrew3,thenfullyremovescrew4,andthenfullyremovescrew3.
Note:Carefullyremovethefourscrewsfromthesystemboardtoavoidanypossibledamagetothe
systemboard.Thefourscrewscannotberemovedfromtheheatsinkandfanassembly.
22ThinkCentreUserGuide
- ThinkCentre 1
- UserGuide 1
- SecondEdition(September2011) 2
- ©CopyrightLenovo2010,2011 2
- Contents 3
- AppendixA.Notices..........69 4
- Index..................73 4
- Importantsafetyinformation 5
- Chapter1.Productoverview 7
- Specications 9
- Softwareoverview 10
- LenovoThinkVantageToolbox 11
- PC-DoctorforRescueandRecovery 11
- Locations 12
- .Productoverview7 13
- Locatingcomponents 14
- Locatingpartsonthesystemboard 14
- Locatinginternaldrives 15
- 10ThinkCentreUserGuide 16
- Installingorreplacinghardware 17
- Installingexternaloptions 17
- Removingthecomputercover 18
- Figure7.Removingthefrontbezel 19
- ThinkCentreUserGuide 20
- InstallingorreplacingaPCIcard 21
- Figure11.RemovingthePCIcard 23
- Figure12.InstallingthePCIcard 24
- Replacingthebattery 26
- Replacingthemicroprocessor 30
- 2onthemicroprocessor 31
- Replacingtheopticaldrive 37
- 32ThinkCentreUserGuide 38
- Replacingtheharddiskdrive 40
- Replacingthefrontfanassembly 43
- 38ThinkCentreUserGuide 44
- Completingthepartsreplacement 46
- Obtainingdevicedrivers 47
- Basicsecurityfeatures 47
- Integratedcablelock 48
- Passwordprotection 49
- Chapter3.Recoveryinformation 51
- Usingrecoverymedia 52
- Performingabackupoperation 53
- Performingarecoveryoperation 53
- Creatingandusingarescuemedium 54
- Creatingarescuemedium 55
- Usingarescuemedium 55
- Solvingrecoveryproblems 56
- Viewingorchangingsettings 57
- Usingpasswords 57
- Passwordconsiderations 58
- Power-onpassword 58
- Administratorpassword 58
- Enablingordisablingadevice 58
- Selectingastartupdevice 59
- ExitingtheSetupUtilityprogram 60
- Usingsystemprograms 61
- .Updatingsystemprograms57 63
- 58ThinkCentreUserGuide 64
- Basictroubleshooting 65
- Diagnosticprograms 66
- PC-DoctorforDOS 67
- Cleaninganopticalmouse 67
- Informationresources 69
- OnlineBooksfolder 69
- LenovoThinkVantageTools 69
- LenovoWelcome 70
- AccessHelp 70
- Safetyandwarranty 70
- LenovoSupportWebsite 71
- Helpandservice 71
- Callingforservice 72
- Usingotherservices 72
- Purchasingadditionalservices 73
- 68ThinkCentreUserGuide 74
- AppendixA.Notices 75
- Televisionoutputnotice 76
- EuropeanconformanceCEmark 76
- Trademarks 76
- RecyclinginformationforBrazil 76
- AppendixA.Notices71 77
- 72ThinkCentreUserGuide 78
- 74ThinkCentreUserGuide 80
- 76ThinkCentreUserGuide 82
- *71Y8530* 84
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