•Ifthepower-onindicatordoesnotturnon,checkthepowercordoftheacpoweradapterforcorrect
continuityandinstallation.
•Ifthecomputerdoesnotchargeduringoperation,goto“Checkingoperationalcharging”onpage31.
Tochecktheacpoweradapter,dothefollowing:
1.Unplugtheacpoweradaptercablefromthecomputer.
2.Measuretheoutputvoltageattheplugoftheacpoweradaptercable.Seethefollowinggure:
Pin
Voltage(Vdc)
1+20
20
3
Ground
Note:Outputvoltageacrosspin2oftheacpoweradaptermightdifferfromtheoneyouareservicing.
3.Ifthevoltageisnotcorrect,replacetheacpoweradapter.
4.Ifthevoltageisacceptable,replacethesystemboard.
Note:Noisefromtheacpoweradapterdoesnotalwaysindicateadefect.
Checkingoperationalcharging
Tocheckwhetherthebatterychargescorrectlyduringoperation,dothefollowing:
Note:Beforeyoubegin,installadischargedbatterypackorbatterypackthatlessthan50%ofthetotal
powerremaininginthecomputer.
1.Ifthebatterystatusindicatordoesnotturnon,removethebatterypackandletitreturntoroom
temperature.
2.Reinstallthebatterypack.
3.Iftheindicatorstilldoesnotturnon,replacethebatterypack.
4.Iftheindicatorstilldoesnotturnon,replacethesystemboard.Otherwise,referto“Checkingthebattery
pack”onpage31tochecktheoriginalbatterypack.
Checkingthebatterypack
ThebatterystatusiconintheWindowsnoticationareadisplaysthepercentageofbatterypowerremaining.
Tocheckfordetailedbatterystatusinformation,dothefollowing:
•ForWindows7:OpenthePowerManagerprogramandclicktheBatterytab.
•ForWindows8:OpentheLenovoSupportprogramandclickBatteryHealth,oropentheLenovo
SettingsprogramandclickPower.
Note:Ifthebatterypackbecomeshot,itmaynotbeabletocharge.Removeitfromthecomputerandleave
itatroomtemperatureforawhile.Afteritcoolsdown,reinstallandrechargeit.
Tocheckthebatterypack,dothefollowing:
1.Poweroffthecomputer.
2.Removethebatterypackandmeasurethevoltagebetweenbatteryterminals1(+)and7(-).Seethe
followinggure:
Chapter3.Generalcheckout31
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General
Weight and Dimensions
