Laptop User Manual

Table1.FRUtests(continued)
FRUApplicabletest
TrackPointorpointing
device
IftheTrackPointdoesnotwork,checkthecongurationasspeciedintheThinkPad
Setup.IftheTrackPointisdisabled,selectAutomatictoenableit.
AfteryouusetheTrackPoint,thepointermaydriftonthescreenforashorttime.This
driftcanoccurwhenaslight,steadypressureisappliedtotheTrackPointpointer.
Thissymptomisnotahardwareproblem.Ifthepointerstopsafterashorttime,no
serviceactionisnecessary.
IfenablingtheTrackPointdoesnotcorrecttheproblem,continuewiththefollowing:
•InteractiveT ests➙Mouse
TouchPad
IftheTouchPaddoesnotwork,checkthecongurationasspeciedintheThinkPad
Setup.IftheTouchPadisdisabled,selectAutomatictoenableit.Ifenablingthe
TouchPaddoesnotcorrecttheproblem,continuewiththefollowing:
•InteractiveT ests➙Mouse
Powersystemcheckout
Toverifyasymptom,dothefollowing:
1.T urnoffthecomputer.
2.Removethebatterypack.
3.Connecttheacpoweradapter.
4.Checkthatpowerissuppliedwhenyouturnonthecomputer.
5.T urnoffthecomputer.
6.Disconnecttheacpoweradapterandinstallthechargedbatterypack.
7.Checkthatthebatterypacksuppliespowerwhenyouturnonthecomputer.
Ifyoususpectapowerproblem,seetheappropriateoneofthefollowingpowersupplycheckouts:
•“Checkingtheacpoweradapter”onpage28
•“Checkingoperationalcharging”onpage29
•“Checkingthebatterypack”onpage29
•“Checkingthebackupbattery”onpage30
Checkingtheacpoweradapter
Youareherebecausethecomputerfailsonlywhentheacpoweradapterisused.
•Ifthepower-onindicatordoesnotturnon,checkthepowercordoftheacpoweradapterforcorrect
continuityandinstallation.
•Ifthecomputerdoesnotchargeduringoperation,goto“Checkingoperationalcharging”onpage29
Tochecktheacpoweradapter,dothefollowing:
1.Unplugtheacpoweradaptercablefromthecomputer.
2.Measuretheoutputvoltageattheplugoftheacpoweradaptercable.Seethefollowinggure:
Pin
Voltage(Vdc)
1+20
20
3
Ground
1
2
3
(20V)
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