Lenovo T550 Technical Information download pdf (Page 27)

1.Gotohttp://support.lenovo.com/ibasepartslookup.

2.TypetheMachineTypeandSerialNumberinthecorrespondingﬁelds.

3.ClickSubmit.

eSupportalsocanbeusedtoviewthegeneralFRUlistforaproduct.TheFRUlistisagenerallistof

componentsanddoesnotcontainspeciﬁcmodelinformation.

TogetthegeneralFRUlistforaproduct,dothefollowing:

1.Gotohttp://www.lenovo.com/support.

2.Followtheinstructionsonthescreentoselectaproduct.

3.ClicktheProduct&Partstab.

4.SelectSystemServicePartstoviewageneralFRUlist.

Chapter2.Importantserviceinformation21

1 2 ... 22 23 24 25 26 27 28 29 30 31 32 ... 111 112

HardwareMaintenanceManual 1
FirstEdition(January2015) 2
Contents 3
AppendixA.Notices.........103 4
Aboutthismanual 5
Chapter1.Safetyinformation 7
Safetyinspectionguide 8
Chapter1.Safetyinformation3 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
StrategyforreplacingFRUs 25
Howtouseerrormessage 26
Productdeﬁnition 26
FRUidentiﬁcation 26
22HardwareMaintenanceManual 28
Chapter3.Generalcheckout 29
Checkoutguide 30
LenovoSolutionCenter 30
Quicktestprograms 30
UEFIdiagnosticprogram 31
Bootablediagnosticprograms 31
Powersystemcheckout 32
Checkingtheacpoweradapter 32
Checkingthecoin-cellbattery 33
28HardwareMaintenanceManual 34
Passwords 38
Power-onpassword 38
Harddiskpassword 38
Supervisorpassword 39
Powermanagement 40
Sleepmode 40
Hibernationmode 41
Symptom-to-FRUindex 41
Numericerrorcodes 42
Errormessages 43
Beepsymptoms 43
No-beepsymptoms 44
LCD-relatedsymptoms 44
Intermittentproblems 44
Undeterminedproblems 45
40HardwareMaintenanceManual 46
Chapter5.Locations 47
Left-sideview 48
Bottomview 48
LocatingFRUsandCRUs 49
MajorFRUs 50
Chapter5.Locations45 51
46HardwareMaintenanceManual 52
Formodelswithtouchfunction: 53
.Locations47 53
Miscellaneouspart 54
48HardwareMaintenanceManual 54
LookingupFRUinformation 55
50HardwareMaintenanceManual 56
Commonservicetools 57
Screwnotices 57
90degreesmore 58
(Cross-section) 58
180degreesmore 58
RetainingtheUUID 59
Generalguidelines 61
Beforeservicingthecomputer 62
Disablingthebuilt-inbattery 62
RemovingthemicroSIMcard 62
RemovingamajorFRU 62
1010Removablebattery 63
1020Basecoverassembly 63
58HardwareMaintenanceManual 64
1030Keyboard 65
Removalstepsofthekeyboard 66
60HardwareMaintenanceManual 66
62HardwareMaintenanceManual 68
StepScrew(quantity)Color 70
(1.85kgf-cm) 70
1050Memorymodule 72
1060WirelessLANcard 72
1070WirelessWANcard 73
1080M.2solid-statedrive 74
1090Coin-cellbattery 75
1130Thermalfan 79
1140Speakerassembly 81
1160Fingerprintreaderassembly 83
Black0.181Nm 84
1180Systemboardassembly 85
1190LCDunit 87
1210Powerbuttonboard 89
1220Keyboardassembly 90
2010LCDbezelassembly 91
2020LCDpanelandLCDcable 91
2030Hingesandhingebrackets 92
2040Camera/microphonecard 93
2050LEDcableassembly 94
3010LCDfrontsheetbezel 98
(3 kgf-cm) 99
3030Hinges 100
3040Camera/microphonecard 101
3050Touchsensorcard 102
3060LEDcableassembly 103
.RemovingorreplacingaFRU99 105
102HardwareMaintenanceManual 108
AppendixA.Notices 109
Electronicemissionsnotices 110
Trademarks 110
*1PSP40G55010* 112

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Lenovo T550 Technical Information Page 27

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