Lenovo ThinkPad 2394F1U User Manual download pdf (Page 40)

Terminal

Voltage(Vdc)

1+0to+12.6

Ground(-)

1(+)

2(+)

6(-)

7(-)

3.Measuretheresistancebetweenbatteryterminals5and7.Theresistancemustbe4to30KΩ.Ifthe

resistanceisnotcorrect,replacethebatterypack.

4.Dependingonthevoltagethatyoumeasure,dooneofthefollowing:

•Ifthevoltageislessthan+11.0Vdc,rechargethebatterypack.Ifthevoltageisstilllessthan+11.0V

dcafterrecharging,replacethebatterypack.

•Ifthevoltageismorethan+11.0Vdc,dischargethebatterypackuntilthevoltagebecomesless

than+11.0Vdcandthenrechargethebatterypack.Ifthevoltagestillislessthan+11.0Vdcafter

recharging,replacethebatterypack.

Note:Rechargingwilltakeatleastthreehours,evenifthebatterystatusindicatordoesnotturnon.

5.Replacethesystemboardifthenewbatterypackisnotcharged.

Checkingthebackupbattery

Dothefollowing:

1.Poweroffthecomputer,andunplugtheacadapterfromit.

2.Turnthecomputerupsidedown.

3.Removethebatterypack(see“1010Batterypack”onpage68).

4.Removethebackupbattery(see“1130Backupbattery”onpage89).

5.Measurethevoltageofthebackupbattery.Seethefollowingillustration.

Wire

Voltage(Vdc)

Red+2.5to+3.2

Black

Ground

•Ifthevoltageiscorrect,replacethesystemboard.

•Ifthevoltageisnotcorrect,replacethebackupbattery.

•Ifthebackupbatterydischargesquicklyafterreplacement,replacethesystemboard.

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Lenovo ThinkPad 2394F1U User Manual Page 40