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 (Vdc) |
1 |
+15.5 to 17.0 |
2 |
Ground |
- If the voltage is correct, make sure the connection between DC/DC card and system board is not loose.
- Replace the DC/DC card.
- If the problem is not corrected, replace the system board.
- If the problem persists, go to 'Undetermined Problems'.
- If the voltage persists, go to the next step.
Unplug the AC Adapter cable from the ac power outlet and wait 5 minutes or longer to allow
the overvoltage protection circuit to be fully discharged and initialized.
Plug the AC Adapter cable into the ac power outlet.
Measure the output voltage of the AC Adapter.
If the voltage is still not correct, replace the AC Adapter.