Replacingthebattery
Attention:
Donotopenyourcomputerorattemptanyrepairbeforereadingandunderstandingthe“Importantsafetyinformation”
intheThinkCentreUserGuide.ToobtainacopyoftheThinkCentreUserGuide,goto:
http://www.lenovo.com/ThinkCentreUserGuides
Yourcomputerhasaspecialtypeofmemorythatmaintainsthedate,time,andsettingsforbuilt-infeatures,
suchasparallel-portassignments(conguration).Abatterykeepsthisinformationactivewhenyouturn
offthecomputer.
Thebatterynormallyrequiresnochargingormaintenancethroughoutitslife;however,nobatterylasts
forever.Ifthebatteryfails,thedate,time,andcongurationinformation(includingpasswords)arelost.An
errormessageisdisplayedwhenyouturnonthecomputer.
Refertothe“Lithiumbatterynotice”intheThinkCentreSafetyandWarrantyGuideforinformationabout
replacinganddisposingofthebattery.
Toreplacethebattery,dothefollowing:
1.Removeallmediafromthedrivesandturnoffallattacheddevicesandthecomputer.Then,disconnect
allpowercordsfromelectricaloutletsanddisconnectallcablesthatareconnectedtothecomputer.
2.Openthecomputercover.See“Openingthecomputercover”onpage72.
3.Locatethebattery.See“Locatingpartsonthesystemboard”onpage71.
4.Removetheoldbattery.
Figure16.Removingtheoldbattery
5.Installanewbattery.
Figure17.Installinganewbattery
6.Reconnectallthecablestothesystemboardandclosethecomputercover.See“Completingthe
partsreplacement”onpage98.
Note:Whenthecomputeristurnedonforthersttimeafterbatteryreplacement,anerrormessage
mightbedisplayed.Thisisnormalafterreplacingthebattery.
80ThinkCentreHardwareMaintenanceManual