Checking the | AC | Adapter: | You are here |
because | the | computer | fails only when the AC Adapter is |
used: |
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|
|
ŸIf the
power cord of the AC Adapter for correct continuity and installation.
ŸIf the operational charge does not work, go to “Checking the Operational Charging.”
Unplug the AC Adapter cable from the computer and
measure the output voltage at the plug of the AC Adapter cable. See the following figure.
Pin |
| Voltage | (V | dc) |
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1 |
| +15.5 | to | +17.0 |
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2 |
| Ground |
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| ||
If | the voltage is not correct, replace the AC Adapter. | ||||
If the voltage is within the range, do the following:
Ÿ Replace the system board.
ŸIf the problem is not corrected, go to “Undetermined Problems” on page 22
Note: An audible noise from the AC Adapter does not always indicate a defective adapter.
Checking | the | Operational | Charging: |
| To |
| |
check | operational | charging, | use | a discharged | battery pack | ||
(battery | ASM) or | a | battery ASM | that has less than 50% of | |||
the | total | power | remaining | when | installed in the | computer. | |
Perform operational charging. If the battery status indicator does not turn on, remove the battery ASM and let it return to room temperature. Reinstall the battery ASM.
If the charge indicator still does not turn on, replace the battery ASM. If the charge indicator still does not turn on, replace the system board. Then reinstall the battery ASM.
If the reinstalled battery ASM is not charged, go to the next section.
Checking the Battery ASM: | Do the following: |
1.Power off the computer.
2.Remove the battery ASM and measure the voltage between battery terminals 1(+) and
ThinkPad 24011