AC Adapter Checkout (TP 380XD, 385XD, 380Z - 2635)

•  If the problem occurs only when AC Adapter is used with a port replicator,  replace the replicator.
•  If the power-on indicator does not turn on, check the power cord of the AC Adapter  for correct continuity and installation.

1.  Unplug the AC Adapter cable from the computer and measure the output voltage at the cable plug.
    See the following figure:

    
   

   Pin	Voltage (Vdc)
   1	+15.5 to +17.0
   2	Ground

    

   1.  If the voltage persists, go to the next step.
   2.  If the voltage is correct, make sure the connection between the DC/DC card  and the system board is not loose.
   3.  Replace the DC/DC card.
   4.  If the problem is not corrected, replace the system board.
   5.  If the problem persists, go to 'Undetermined Problems'.

2.  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.
3.  Plug the AC Adapter cable into the ac power outlet.
4.  Measure the output voltage of the AC Adapter.
5.  If the voltage is still not correct, replace the AC Adapter.

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