Lenovo W541 Technické informace stáhnout pdf (Strana 33)

Checkingtheacpoweradapter

Youareherebecausethecomputerfailsonlywhentheacpoweradapterisused.

•Ifthepowerproblemoccursonlywhenthedockingstationortheportreplicatorisused,replacethe

dockingstationortheportreplicator.

•Ifthesystemstatusindicatordoesnotblinkthreetimeswhenanacpowersourceisconnected,check

thepowercordoftheacpoweradapterforcorrectcontinuityandinstallation.

•Ifthecomputerdoesnotchargeduringoperation,goto“Checkingthebatteryandoperationalcharging”

onpage27

Tochecktheacpoweradapter,dothefollowing:

1.Unplugtheacpoweradaptercablefromthecomputer.

2.Measuretheoutputvoltageattheplugoftheacpoweradaptercable.Seethefollowingillustration:

Voltage(Vdc)

1+20

Ground

(20V)

Note:Outputvoltageofpin2oftheacpoweradaptermightdifferfromtheoneyouareservicing.

3.Ifthevoltageisnotcorrect,replacetheacpoweradapter.

4.Ifthevoltageisacceptable,replacethesystemboard.

Note:Noisefromtheacpoweradapterdoesnotalwaysindicateadefect.

Checkingthebatteryandoperationalcharging

Thiscomputersupportsonlybatteriesspeciallydesignedforthisspeciﬁcsystemandmanufacturedby

Lenovooranauthorizedbuilder.Thesystemdoesnotsupportunauthorizedbatteriesorbatteriesdesigned

forothersystems.Ifanunauthorizedbatteryorabatterydesignedforanothersystemsisinstalled,the

systemwillnotcharge.

Attention:Lenovohasnoresponsibilityfortheperformanceorsafetyofunauthorizedbatteries,and

providesnowarrantiesforfailuresordamagearisingoutoftheiruse.

ThebatterystatusiconintheWindowsnotiﬁcationareadisplaysthepercentageofthebatterypower

remained.

Tocheckfordetailedbatterystatusinformation,dothefollowing:

•ForWindows7:OpenthePowerManagerprogramandclicktheBatterytab.

•ForWindows8andWindows8.1:OpentheLenovoSettingsprogramandclickPower.

Tocheckwhetherthebatterychargesproperlyduringoperation,dothefollowing:

1.Dischargethebatteryuntiltheremainedbatterypowerislessthan50%.

2.Connectthecomputertoacpowertochargethebattery.IfthebatterystatusiconintheWindows

notiﬁcationareaindicatesthatthebatteryisnotcharging,removethebatteryandletitreturntoroom

temperature.

3.Reinstallthebattery.Ifthebatteryisstillnotcharging,replacethebatterypack.

4.Checkthebatterystatusiconagain.Ifthesameerrorstillexists,replacethesystemboard.

Chapter3.Generalcheckout27

1 2 ... 28 29 30 31 32 33 34 35 36 37 38 ... 115 116

R 12 Mar 2025 | 05:44:50

Lenovo W541 Technické informace Strana 33