IBM THINKPAD S05L-1270-01 User Manual

Page 547

Note: Signal lines not used in these steps are used

for communication between the system and
the battery.

3. If the voltage is less than

11.0 V dc, the battery pack

has been discharged. Recharge the battery pack.

If the voltage is still less than

11.0 V dc after

recharging, replace the battery.

Note: If the voltage of the battery pack is 0 V, it is

defective.

4. If the voltage is more than

11.0 V dc, measure the

resistance between battery terminals 3 and 4. The
resistance must be 4 to 30 K ohm.

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

If the resistance is correct, replace the DC/DC card.

Terminal

Voltage (V dc) / Signal

0 to

13.5

Send

Thermal

Ground (

−

)

Select

ThinkPad 770 (9548, 9549)

535