IBM THINKPAD X121E Manual de usuario Pagina 34

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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 estsMouse
TouchPad
IftheTouchPaddoesnotwork,checkthecongurationasspeciedintheThinkPad
Setup.IftheTouchPadisdisabled,selectAutomatictoenableit.Ifenablingthe
TouchPaddoesnotcorrecttheproblem,continuewiththefollowing:
InteractiveT estsMouse
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)
28HardwareMaintenanceManual
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