Lenovo ThinkPad T470 Hardware Maintenance Manual

Contents
Aboutthismanual...........iii
Chapter1.Safetyinformation......1
Generalsafety................1
Electricalsafety...............1
Safetyinspectionguide............2
Handlingdevicesthataresensitivetoelectrostatic
discharge..................3
Groundingrequirements............4
Safetynotices(multilingualtranslations)......4
Chapter2.Importantservice
information..............19
StrategyforreplacingFRUs.........19
Strategyforreplacingaharddiskdriveora
solid-statedrive............19
Importantnoticeforreplacingasystem
board................20
Howtouseerrormessage........20
StrategyforreplacingFRUsforCTO,special-bid,
andstandardmodels............20
Productdefinition............20
FRUidentification............20
Chapter3.Generalcheckout.....23
Whattodofirst..............23
Checkoutguide..............24
Diagnosingproblems..........24
Quicktestprograms...........25
UEFIdiagnosticprogram.........25
Bootablediagnosticprograms.......26
Powersystemcheckout...........27
Checkingtheacpoweradapter......27
Checkingtheremovablebatteryandthe
operationalcharging..........28
Checkingthecoin-cellbattery.......29
Chapter4.Relatedservice
information..............31
Recoveryinformation............31
Restoringthefactorycontentswiththe
RecoveryDiscSetfortheWindows7
operatingsystem............31
RecoveryinformationfortheWindows10
operatingsystem............32
Passwords................34
Power-onpassword...........34
Harddiskpassword...........34
Supervisorpassword..........34
Howtoremovethepower-onpassword...35
Howtoremovetheharddiskpassword...35
Powermanagement............36
Screenblankmode(fortheWindows7
operatingsystemonly)..........36
Sleepmode..............36
Hibernationmode...........36
Symptom-to-FRUindex...........37
Numericerrorcodes..........37
Errormessages............39
Beeperrors..............39
No-beepsymptoms...........40
LCD-relatedsymptoms.........41
Intermittentproblems..........41
Undeterminedproblems.........41
Chapter5.Statusindicators.....43
Chapter6.Functionkeys.......45
Chapter7.Locations.........47
Locatingcomputercontrols,connectors,and
indicators.................47
Frontview...............47
Bottomview..............48
LocatingFRUsandCRUs..........49
MajorFRUsandCRUs..........50
LCDFRUs..............52
Miscellaneousparts...........53
Connectorandcableguide........53
LookingupFRUinformation.........59
Chapter8.FRUreplacement
notices................61
Screwnotices...............61
Retainingserialnumbers...........62
Restoringtheserialnumberofthesystem
unit.................62
RetainingtheUUID...........63
ReadingorwritingtheECAinformation...63
Chapter9.Removingorreplacinga
FRU..................65
Generalguidelines.............65
Beforeservicingthecomputer........66
Disablingthebuilt-inbattery.......66
1010Removablebattery...........66
1020MicroSIMcard............67
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Lenovo ThinkPad T470 Specifications

General

Brand	Lenovo
Model	ThinkPad T470
Category	Laptop
Language	English