Lenovo ThinkPad W540 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
LenovoSolutionCenter.........24
Quicktestprograms...........24
UEFIdiagnosticprogram.........25
Bootablediagnosticprograms.......26
Powersystemcheckout...........26
Checkingtheacpoweradapter......27
Checkingthebatteryandoperational
charging...............27
Checkingthecoin-cellbattery.......28
Chapter4.Relatedservice
information..............29
Restoringthefactorycontentsbyusingthe
RecoveryDiscSet.............29
UsingtheWindowsrecoverysolutions(for
Windows8andWindows8.1only).......30
Refreshingyourcomputer........30
Resettingyourcomputertothefactorydefault
settings................31
Usingtheadvancedstartupoptions....31
UsingtheWindowsrecoveryenvironment..32
Creatingandusingrecoverymedia.....32
RecoveryoverviewfortheWindows10operating
system..................33
Resettingyourcomputer.........33
Usingadvancedstartupoptions......33
RecoveringyouroperatingsystemifWindows
10failstostart.............34
CreatingandusingarecoveryUSBdrive..34
Passwords................35
Power-onpassword...........35
Harddiskpassword...........35
Supervisorpassword..........35
Howtoremovethepower-onpassword...35
Howtoremovetheharddiskpassword...36
Powermanagement............36
Screenblankmode(forWindows7only)..37
Sleepmode..............37
Hibernationmode...........37
Symptom-to-FRUindex...........38
Numericerrorcodes..........38
Errormessages............39
Beepsymptoms............40
No-beepsymptoms...........40
LCD-relatedsymptoms.........40
Intermittentproblems..........41
Undeterminedproblems.........41
Chapter5.Statusindicators.....43
Chapter6.Functionkeys.......45
Chapter7.Locations.........47
Locatingcomputercontrols,connectors,and
indicators.................47
Frontview...............47
Rearview...............48
Bottomview..............48
LocatingFRUsandCRUs..........49
MajorFRUs..............50
LCDFRUs..............52
MiscellaneouspartsandotherFRUs....53
LookingupFRUinformation.........53
Chapter8.FRUreplacement
notices................55
Screwnotices...............55
Retainingserialnumbers...........56
Restoringtheserialnumberofthesystem
unit.................56
©CopyrightLenovo2013,2015
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Lenovo ThinkPad W540 Specifications

General

Display	15.6 inch, 1920 x 1080 pixels
Graphics	NVIDIA Quadro K1100M
RAM	DDR3L
Battery	6-cell
Ports	Ethernet
Wireless	Bluetooth 4.0