Lenovo ThinkCentre Edge 91 - Table of Contents

Contents
Chapter1.Aboutthismanual......1
Importantsafetyinformation..........1
Chapter2.Safetyinformation......3
Generalsafety................3
Electricalsafety...............3
Voltage-selectionswitch............5
Safetyinspectionguide............5
Handlingelectrostaticdischarge-sensitive
devices..................6
Groundingrequirements............6
Safetynotices(multi-lingualtranslations).....6
Chapter3.Generalinformation....33
LenovoWelcome..............33
LenovoThinkVantageTools.........33
LenovoSolutionCenter...........33
SimpleTap................33
Additionalinformationresources.......34
Specications...............34
Formachinetypes:1852,1853,1855,3247,
and3248...............34
Formachinetypes:1857,1893,1895,3250,
and3253...............35
Chapter4.Generalcheckout.....37
Problemdeterminationtips..........37
Chapter5.Diagnosticprograms...39
LenovoThinkVantageToolbox........39
LenovoSolutionCenter...........39
PC-DoctorforDOS.............40
Creatingadiagnosticdisc........40
Runningthediagnosticprogramfromthe
diagnosticdisc.............40
Navigatingthroughthediagnosticprograms.40
Runningtests.............40
Viewingthetestlog...........42
Chapter6.UsingtheSetupUtility
program................43
StartingtheSetupUtilityprogram.......43
Viewingandchangingsettings........43
Usingpasswords..............43
Passwordconsiderations.........44
Power-OnPassword..........44
AdministratorPassword.........44
HardDiskPassword...........44
Setting,changing,anddeletingapassword.44
Erasinglostorforgottenpasswords(clearing
CMOS)................45
Enablingordisablingadevice........45
Selectingastartupdevice..........46
Selectingatemporarystartupdevice....46
Selectingorchangingthestartupdevice
sequence...............46
EnablingErPcompliancemode........46
ExitingtheSetupUtilityprogram.......47
Chapter7.Symptom-to-FRUindex..49
Harddiskdrivebooterror..........49
Powersupplyproblems...........49
Diagnosticerrorcodes...........49
Beepsymptoms..............67
POSTerrorcodes.............67
Miscellaneouserrormessages........69
Undeterminedproblems...........71
Chapter8.ReplacingFRUs(Machine
Types:1852,1853,and1855).....73
Locations.................73
Locatingconnectors,controls,andindicators
onthefrontofyourcomputer.......74
Locatingconnectorsontherearofyour
computer...............75
Locatingcomponents..........76
Locatingpartsonthesystemboard....77
Locatinginternaldrives.........78
Handlingstatic-sensitivedevices.......78
Installingorreplacinghardware........79
Removingthecomputercover.......79
Removingandreinstallingthefrontbezel..80
InstallingorreplacingaPCIcard......82
Installingorreplacingamemorymodule...85
Replacingthebattery..........87
Replacingtheprimaryharddiskdrive....88
Replacingtheopticaldrive........90
Replacingthepowersupplyassembly...92
Replacingtheheatsinkandfanassembly..94
Replacingthemicroprocessor.......96
Replacingthesystemboard.......98
Replacingtherearfanassembly......101
ReplacingthefrontaudioandUSB
assembly...............103
Completingthepartsreplacement.....104
©CopyrightLenovo2011,2012
i