IBM THINKPAD X121E Bedienungsanleitung PDF herunterladen (Seite 35)

Note:Outputvoltageofpinno.2oftheacpoweradaptermaydifferentfromtheoneyouareservicing.

3.Ifthevoltageisnotcorrect,replacetheacpoweradapter.

4.Ifthevoltageisacceptable,dothefollowing:

•Replacethesystemboard.

•Iftheproblempersists,goto“FRUtests”onpage27.

Note:Noisefromtheacpoweradapterdoesnotalwaysindicateadefect.

Checkingoperationalcharging

Tocheckwhetherthebatterychargesproperlyduringoperation,useadischargedbatterypackorabattery

packthathaslessthan50%ofthetotalpowerremainingwheninstalledinthecomputer.

Performoperationalcharging.Ifthebatterystatusindicatororicondoesnotturnon,removethebattery

packandletitreturntoroomtemperature.Reinstallthebatterypack.Ifthechargeindicatororiconstilldoes

notturnon,replacethebatterypack.

Ifthechargeindicatorstilldoesnotturnon,replacethesystemboard.Thenreinstallthebatterypack.Ifitis

stillnotcharged,gotothenextsection.

Checkingthebatterypack

BatterychargingdoesnotstartuntilthePowerManagerBatteryGaugeshowsthatlessthan96%ofthe

totalpowerremains;underthisconditionthebatterypackcanchargeto100%ofitscapacity.Thisprotects

thebatterypackfrombeingoverchargedorfromhavingashortenedlife.

Tocheckyourbattery,moveyourcursortothePowerManagerBatteryGaugeiconintheicontrayofthe

Windowstaskbarandwaitforamoment(butdonotclick),andthepercentageofbatterypowerremaining

isdisplayed.Togetdetailedinformationaboutthebattery,double-clickthePowerManagerBattery

Gaugeicon.

Note:Ifthebatterypackbecomeshot,itmaynotbeabletocharge.Removeitfromthecomputerandleave

itatroomtemperatureforawhile.Afteritcoolsdown,reinstallandrechargeit.

Tocheckthebatterypack,dothefollowing:

1.Poweroffthecomputer.

2.Removethebatterypackandmeasurethevoltagebetweenbatteryterminals1(+)and7(-).Seethe

followinggure:

Terminal

Voltage(Vdc)

1+0to+12.6

Ground(-)

1(+)

2(+)

6(-)

7(-)

3.Ifthevoltageislessthan+11.0Vdc,thebatterypackhasbeendischarged.

Note:Rechargingwilltakeatleast3hours,eveniftheindicatordoesnotturnon.

Ifthevoltageisstilllessthan+11.0Vdcafterrecharging,replacethebattery.

Chapter3.Generalcheckout29

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IBM THINKPAD X121E Bedienungsanleitung Seite 35