2.Checkallpowerconnections.Removeanypowerstripsandsurgeprotectorstoconnecttheacpower
adapterdirectlytotheacpoweroutlet.
3.Inspecttheacpoweradapter.Checkforanyphysicaldamage,andmakesurethatthepowercableis
rmlyattachedtotheadapterbrickandthecomputer.
4.Verifytheacpowersourceisworkingbyattachinganotherdevicetotheoutlet.
5.RemovethecomputerfromaThinkPadPortReplicatorSeries3,ThinkPadMiniDockSeries3,ThinkPad
MiniDockPlusSeries3,orThinkPadMiniDockPlusSeries3(170W).Referto“DetachingaThinkPad
PortReplicatorSeries3,ThinkPadMiniDockSeries3orThinkPadMiniDockPlusSeries3”onpage164.
6.Removealldevicesandthentestforsystempowerwithminimaldevicesattached.
a.Disconnecttheacpoweradapterandallcablesfromthecomputer.
b.Closethecomputerdisplay,andturnthecomput erover.
c.Removethebattery .Referto“Replacingthebattery”onpage111.
d.Removethememory(SO-DIMM).Referto“Replacingmemory”onpage123.
e.RemovethePCIExpressMiniCard.Referto“InstallingandreplacingaPCIExpressMiniCardfor
wirelessLAN/WiMAXconnection”onpage130.
f.RemovetheUltrabaydevices.Referto“Replacingthedevice”onpage149.
g.Removetheharddiskdriveandsolidstatedrive.Referto“Replacingtheharddiskdrive”onpage
115and“Replacingthesolidstatedrive”onpage143.
h.Waitfor30seconds,andthenreinstalltheSO-DIMMandtheknowngoodbatteryortheacpower
adaptertotestthecomputerwithminimaldevicesattachedrst.
i.Reinstalleachdeviceoneatatimethatyouhaveremovedintheearliersteps.
Ifyourcomputerdoesnotrunonbatterypower,checkthefollowingitems:
1.Removeandreseatthebatterytomakesurethatitisproperlyconnected.Referto“Replacingthe
battery”onpage111.
2.Swapbatterieswithanothersimilarmodel,ifavailable.
IfanothersimilarThinkPadmodelisavailable,thenverifythatthebatterypackworksintheother
computerandthatthebatterypackfortheothermodelworksinthiscomputer .
3.Verifythebattery-statusindicator.Referto“P ower-statusindicators”onpage12.
Thebattery-statusindicatorisnormallyilluminatedwheneverthebatteryisinstalledandthecomputeris
on,ortheacpoweradapterisconnectedandthebatteryischarging.Thisindicatormaybeblinkingor
solidineitherorangeorgreencolordependingonthestatusofthebattery .
Apowerbuttonproblem
•Problem:Thesystemdoesnotrespond,andyoucannotturnoffthecomputer.
Solution:Turnoffthecomputerbypressingandholdingthepowerbuttonfor4secondsormore.Ifthe
systemisstillnotreset,removetheacpoweradapterandthebattery.
Startupproblems
Printtheseinstructionsnowandkeepthemwithyourcomputerforreferencelater.
Ifyoureceiveanerrormessagebeforetheoperatingsystemloads,checkthefollowingitem:
•FollowtheappropriatecorrectiveactionsforPower-onself-test.See“Errormessages”onpage203.
Ifyoureceiveanerrormessagewhiletheoperatingsystemisloadingthedesktopcongurationafterthe
POSTiscompleted,checkthefollowingitems:
Chapter10.Troubleshootingcomputerproblems227