Lenovo ThinkPad i Series 1300 ThinkPad 130, 1200, 1300 - Hardware Maintenance - Page 49

than 9.6V NiMH or 14.4V Li-Ion. Then, charge the, Li-Ion, measure the resistance between battery

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Terminal (NiMH) 5 6 7 Signal / Voltage (V dc) Thermal BT+SENSE BT+ (0 V. - 14.4 V.) Terminal (Li-Ion) 1 2 3 4 5 6 7 Signal / Voltage (V dc) Ground BT-SENSE BT-SCLK BT-SDATA Thermal BT+SENSE BT+ (0 V. - 16.8 V.) Note: Signal lines, not used in these steps, are used for communications between the system and the battery. 3. First, discharge the battery, until the voltage is less than 9.6V (NiMH) or 14.4V (Li-Ion). Then, charge the battery for 30 minutes. Now, check the voltage. If the voltage is still less than 9.6V (NiMH) or 14.4V (Li-Ion), replace the battery. 4. If the voltage is more than 9.6V (NiMH) or 14.4V (Li-Ion), measure the resistance between battery terminals 1 and 5. The resistance must be 10K (NiMH) or 390 (Li-Ion). If the resistance is not correct, replace the Battery ASM. If the resistance is correct, replace the system board. ThinkPad i Series 1200/1300 39

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Terminal (NiMH)
Signal / Voltage (V dc)
5
Thermal
6
BT+SENSE
7
BT+ (0 V. - 14.4 V.)
Terminal (Li-Ion)
Signal / Voltage (V dc)
1
Ground
2
BT-SENSE
3
BT-SCLK
4
BT-SDATA
5
Thermal
6
BT+SENSE
7
BT+ (0 V. - 16.8 V.)
Note:
Signal lines, not used in these steps, are used
for communications between the system and the
battery.
3.
First, discharge the battery, until the voltage is less
than 9.6V (NiMH) or 14.4V (Li-Ion). Then, charge the
battery for 30 minutes. Now, check the voltage. If the
voltage is still less than 9.6V (NiMH) or 14.4V (Li-Ion),
replace the battery.
4.
If the voltage is more than 9.6V (NiMH) or 14.4V
(Li-Ion), measure the resistance between battery
terminals 1 and 5. The resistance must be 10K
±
(NiMH) or 390
±
(Li-Ion). If the resistance is not correct,
replace the Battery ASM. If the resistance is correct,
replace the system board.
ThinkPad i Series 1200/1300
39