Lenovo ThinkCentre Edge 72 - Page 4

Locatingconnectorsontherearofyour
computer...............75
LocatingmajorFRUsandCRUs......76
LookingupFRUinformation.......78
Locatingpartsonthesystemboard....79
Locatinginternaldrives.........80
Chapter9.ReplacingFRUs(Machine
Types:3484,3485,and3492).....81
Handlingstatic-sensitivedevices.......81
Installingorreplacinghardware........81
Removingthecomputercover.......82
Removingandreinstallingthefrontbezel..83
InstallingorreplacingaPCIcard......84
Replacingthebattery..........87
Installingorreplacingamemorymodule...88
Replacingtheopticaldrive........90
Replacingtheheatsinkandfanassembly..92
Replacingthepowersupplyassembly...94
Replacingthemicroprocessor.......95
Replacingthesystemboard.......98
Replacingtheprimaryharddiskdrive....100
ReplacingthefrontaudioandUSB
assembly...............102
ReplacingtheWiFiunits.........103
InstallingorremovingtherearWiFiantenna..109
InstallingorremovingthefrontWiFi
antenna...............110
Completingthepartsreplacement.....112
Chapter10.ReplacingFRUs(Machine
Types:3493,3496,and3497)....115
Handlingstatic-sensitivedevices.......115
Installingorreplacinghardware........115
Removingthecomputercover.......116
Removingandreinstallingthefrontbezel..117
Accessingthesystemboardcomponentsand
drives................118
InstallingorreplacingaPCIcard......119
Installingorreplacingamemorymodule...121
Replacingthebattery..........122
Replacingtheharddiskdrive.......123
Replacingtheopticaldrive........125
Replacingthepowersupplyassembly...129
Replacingtheheatsinkandfanassembly..133
Replacingthemicroprocessor.......136
Replacingthesystemboard.......139
Replacingthesystemfanassembly....141
ReplacingthefrontaudioandUSB
assembly...............143
ReplacingtheWiFiunits.........144
InstallingorremovingtherearWiFiantenna..149
InstallingorremovingthefrontWiFi
antenna...............151
Replacingthekeyboardormouse.....153
Completingthepartsreplacement.....154
Chapter11.Additionalservice
information.............157
Securityfeatures..............157
Hardware-controlledpasswords......157
Operatingsystempassword.......157
VitalProductData...........157
BIOSlevels................157
Flashupdateprocedures..........157
Updating(ashing)theBIOSfromadisc...158
Updating(ashing)theBIOSfromyour
operatingsystem............159
RecoveringfromaPOSTandBIOSupdate
failure................159
Powermanagement............160
AdvancedCongurationandPowerInterface
(ACPI)BIOS..............160
AutomaticPower-onfeatures.......160
AppendixA.Notices.........161
Televisionoutputnotice...........162
EuropeanconformanceCEmark.......162
Trademarks................162
Index.................163
iiThinkCentreHardwareMaintenanceManual