Lenovo ThinkPad T410s User Manual download pdf (Page 43)

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.

4.Ifthevoltageismorethan+11.0Vdc,measuretheresistancebetweenbatteryterminals5and7.

Theresistancemustbe4to30KΩ.Iftheresistanceisnotcorrect,replacethebatterypack.Ifthe

resistanceiscorrect,replacethesystemboard.

Checkingthebackupbattery

Dothefollowing:

1.Poweroffthecomputer,andunplugtheacadapterfromit.

2.Turnthecomputerupsidedown.

3.Removethebatterypack(see“1010Batterypack”onpage66).

4.Removethebackupbattery(see“1080Backupbattery”onpage78).

5.Measurethevoltageofthebackupbattery.Seethefollowinggure.

Wire

Voltage(Vdc)

Red+2.5to+3.2

Black

Ground

Red(+)

Black(-)

•Ifthevoltageiscorrect,replacethesystemboard.

•Ifthevoltageisnotcorrect,replacethebackupbattery.

•Ifthebackupbatterydischargesquicklyafterreplacement,replacethesystemboard.

Chapter3.Generalcheckout37

1 2 ... 38 39 40 41 42 43 44 45 46 47 48 ... 165 166

No comments

Lenovo ThinkPad T410s User Manual Page 43