Power Systems Checkout
To check the system power, do the following.
1. Power-off the computer.
2. Remove the battery from the computer.
3. Check the battery voltage. The voltage should be
10.8 Vdc.
If the voltages are not correct, try recharging the
battery pack.
If the voltages are correct, continue with the next step
to test the AC adapter voltage.
4. Unplug the AC adapter from the computer.
5. Measure the voltage at the points shown.
1
2
If the voltage is not correct, replace the AC adapter.
If the voltage is correct, go to “Undetermined
Problems” on page 239.
V dc + Lead – Lead
+16.3 2 1
ThinkPad 500 (2603) 235
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