IBM-AUSTRIA - PC-HW-Support    30 Aug 1999

Checking the Battery Pack

1.  Power-off the computer.
2.  Remove the battery pack and measure the voltage between battery  terminals 1 (+) and 4 (-).
    
   

   Voltage (Vdc) / Signal

   Terminal	340 (NiCd)	340CSE (NiMH)
   1	+10.0 to +18.0	+10.0 to +16.0
   2	NC	0 Ohm ground (-)
   3	10 KOhm ground (-)	10 KOhm ground (-)
   4	Ground (-)	Ground (-)

    

3.  If the voltage is less than +10.0 Vdc, the battery pack has  been discharged or is defective.  Recharge the battery.  If the recharging does not work,  go to Step 5 to check the charging circuit.

    If the voltage is still less than +10.0 Vdc after the recharging,  replace the battery.

4.  If the voltage is more than +8.0 Vdc,  measure the resistance between  battery terminals 3 and 4.  The resistance must be 4 to 30 kilohms.

     If the resistance is not correct , replace the battery pack.
     If the resistance is correct , replace the system board.

5.  To check the charging circuit, do the following.  Plug in the AC Adapter with the battery pack removed, then  power-on the computer.
6.  Measure the charging voltage between terminals  1 (+) and 4 (-) on the computer.
7.  If the voltage is less then +10.0 Vdc, replace  the system board.  If the voltage is more than +10.0 Vdc, the charging circuit is  working correctly, replace the battery pack.

Please see the LEGAL  -  Trademark notice.
Feel free - send a   for any BUG on this page found - Thank you.