这里提到要检查Voltage Converter的电压 但我并没找到啊 哪位大神提示下？http://ps-2.kev009.com/eprmhtml/epr2a/h3911.htm
Checking the Voltage Converter (700, 700C)
Use the following procedure to isolate a problem with the ThinkPad 700, 700C voltage converter.
NOTE: If the problem only occurs when using the computer with a good battery pack, replace the voltage converter.
NOTE: Only VOLT is marked on the system board. Use the above figure to locate the VA, VG, VB, VC, and PWRGOOD signal names.
- If all voltages are correct, the voltage converter is operating correctly.
- If the voltages are not correct, go to the next step.
- Power-off the computer.
- Power-off all attached devices and disconnect them from the computer.
- Unplug the AC adapter cable and remove the battery pack from the computer.
- Carefully place the computer bottom-side up and remove the bottom cover.
- Plug the AC adapter cable into the computer.
- Power-on the computer.
- Check the voltages of the voltage converter on the system board.
- Power-off the computer and unplug the AC adapter cable from the computer.
- Check for a short circuit between GND and VA, VG, VB, or VC.
- If there is a short circuit, replace the following FRUs one at a time to correct the problem.
- Voltage converter
- System board
- If there is no short circuit, go to the next step.
- Check the output voltage of the AC adapter cable (see 'Checking the AC Adapter')
- If the output voltage is correct, go to the next step.
- Replace the following FRUs one at a time.
- Voltage converter
- System board
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