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Chapter7.RemovingandreplacingaFRU
ThischapterprovidesinstructionsonhowtoremoveorreplaceaFRU.
CRUstatementforcustomers:
Youcanresolvesomeproblemswithyourproductwithareplacementpartyoucaninstallyourself,called
a“CustomerReplaceableUnit”or“CRU.”SomeCRUsaredesignatedasself-serviceCRUsandothers
aredesignatedasoptional-serviceCRUs.Installationofself-serviceCRUsisyourresponsibility.For
optional-serviceCRUs,youcaneitherinstalltheCRUyourselforyoucanrequestthataServiceProvider
installtheCRUaccordingtothewarrantyserviceforyourproduct.IfyouintendoninstallingtheCRU,
LenovowillshiptheCRUtoyou.CRUinformationandreplacementinstructionsareshippedwithyour
productandareavailablefromLenovoatanytimeuponrequest.YoucanndalistofCRUsforyour
productinthisHardwareMaintenanceManual.Anelectronicversionofthismanualcanbefoundat
http://www.lenovo.com/UserManuals.Followtheon-screeninstructionstondthemanualforyourproduct.
YoumightberequiredtoreturnthedefectiveCRU.Whenreturnisrequired:(1)returninstructions,aprepaid
shippinglabel,andacontainerwillbeincludedwiththereplacementCRU;and(2)youmightbechargedfor
thereplacementCRUifLenovodoesnotreceivethedefectiveCRUwithinthirty(30)daysofyourreceiptof
thereplacementCRU.SeeyourLenovoLimitedWarrantydocumentationforfulldetails.
Generalguidelines
ThischapterpresentsdirectionsanddrawingsforuseinremovingandreplacingaFRU.Besuretoobserve
thefollowinggeneralrules:
1.Donottrytoserviceanycomputerunlessyouhavebeentrainedandcertied.Anuntrainedpersonruns
theriskofdamagingparts.
2.BeforereplacinganyFRU,reviewChapter6“FRUreplacementnotices”onpage41.
3.BeginbyremovinganyFRUsthathavetoberemovedbeforereplacingthefailingFRU.Anysuch
FRUsarelistedatthebeginningofeachFRUreplacementprocedure.Removethemintheorderin
whichtheyarelisted.
4.FollowthecorrectsequenceinthestepsforremovingaFRU,asgiveninthedrawingsbythenumbers
insquarecallouts.
5.Whenturningascrew,turnitinthedirectionasgivenbythearrowinthedrawing.
6.WhenremovingaFRU,moveitinthedirectionasgivenbythearrowinthedrawing.
7.ToputthenewFRUinplace,reversetheremovalprocedureandfollowanynotesthatpertainto
replacement.Forinformationaboutconnectingandarranginginternalcables,seeChapter8“Locations”
onpage75
.
8.WhenreplacingaFRU,usethecorrectscrew(s)asshowninthereplacementprocedures.
DANGER
BeforeremovinganyFRU,turnoffthecomputer,unplugallpowercordsfromelectricaloutlets,
removethebatterypack,andthendisconnectanyinterconnectingcables.
Attention:AfterreplacingaFRU,donotturnonthecomputeruntilyouhavemadesurethatallscrews,
springs,andothersmallpartsareinplaceandnonearelooseinsidethecomputer.Verifythisbyshaking
thecomputergentlyandlisteningforrattlingsounds.Metallicpartsormetalakescancauseelectrical
shortcircuits.
©CopyrightLenovo2012
43
- HardwareMaintenanceManual 1
- ThirdEdition(December2012) 2
- ©CopyrightLenovo2012 2
- Contents 3
- Aboutthismanual 5
- Chapter1.Safetyinformation 7
- Electricalsafety 8
- Safetyinspectionguide 9
- Groundingrequirements 10
- Chapter1.Safetyinformation5 11
- 6HardwareMaintenanceManual 12
- .Safetyinformation7 13
- Chapter1.Safetyinformation9 15
- VORSICHT 17
- .Safetyinformation11 17
- 12HardwareMaintenanceManual 18
- .Safetyinformation13 19
- 14HardwareMaintenanceManual 20
- .Safetyinformation15 21
- 16HardwareMaintenanceManual 22
- .Safetyinformation17 23
- 18HardwareMaintenanceManual 24
- Chapter1.Safetyinformation19 25
- 20HardwareMaintenanceManual 26
- .Safetyinformation21 27
- 22HardwareMaintenanceManual 28
- .Safetyinformation23 29
- 24HardwareMaintenanceManual 30
- .Safetyinformation25 31
- 26HardwareMaintenanceManual 32
- StrategyforreplacingFRUs 33
- Currentororiginalpart 34
- ReplacementFRU 34
- MustbeRoHSMustbeRoHS 34
- Chapter3.Generalcheckout 35
- Powersystemcheckout 36
- Checkingtheacpoweradapter 36
- Checkingoperationalcharging 37
- Checkingthebatterypack 37
- 32HardwareMaintenanceManual 38
- Recoveringthecomputersettings 39
- Passwords 39
- Power-onpassword 40
- Supervisorpassword 40
- Powermanagement 40
- Screenblankmode 40
- Sleepmode 40
- Hibernationmode 41
- 36HardwareMaintenanceManual 42
- Chapter5.LenovoB475e 43
- Statusindicators 44
- Fnkeycombinations 45
- 40HardwareMaintenanceManual 46
- Screwnotices 47
- Generalguidelines 49
- 1010Batterypack 50
- 1020Bottomslotcover 50
- 1030Harddiskdrive 51
- 1040Opticaldrive 53
- 1050Memorymodules 53
- 1070Backupbattery 55
- 1080Keyboard 56
- .RemovingandreplacingaFRU51 57
- 1090Keyboardbezel 58
- Removalstepsofkeyboardbezel 59
- Removethescrew3 59
- .RemovingandreplacingaFRU53 59
- Detachtheconnectors 60
- Removethekeyboardbezel 60
- 54HardwareMaintenanceManual 60
- 1100LEDboardandpowerboard 61
- 1110Microphoneassembly 62
- 1120I/Oboard 62
- StepScrew(quantity)Color 63
- 1.85kgf-cm 63
- 1130Systemboardassembly 64
- Removalstepsofsystemboard 65
- .RemovingandreplacingaFRU59 65
- 1140LCDunit 66
- 1.6kgf-cm 67
- 1150Thermalfanassembly 68
- 2to4,butdonotremovethem 69
- 1160Speakerassembly 71
- 1170DC-insubcardandbasecover 71
- RemovalstepsofDC-insubcard 72
- 66HardwareMaintenanceManual 72
- 2010LCDfrontbezel 73
- 2020Integratedcamera 75
- 2040Antennaassembly 78
- 74HardwareMaintenanceManual 80
- Frontview 81
- Bottomview 82
- Chapter9.Partslist 83
- .Partslist79 85
- 80HardwareMaintenanceManual 86
- Chapter9.Partslist81 87
- Keyboard 88
- .Partslist83 89
- 84HardwareMaintenanceManual 90
- Miscellaneousparts 91
- Powercords 91
- 86HardwareMaintenanceManual 92
- .Partslist87 93
- 88HardwareMaintenanceManual 94
- .Partslist89 95
- 90HardwareMaintenanceManual 96
- AppendixA.Notices 97
- Electronicemissionsnotices 98
- Trademarks 98
- PartNumber: 100
- PrintedinChina 100
- (1P)P/N: 100
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