Checking the AC Adapter (TP 570

^{IBM-AUSTRIA - PC-HW-Support 30 Aug 1999}

Checking the AC Adapter (TP 570 - 2644)

Checking the AC Adapter

You are here because the computer fails only when the AC Adapter is used:

If the power problem occurs only when the port replicator is used, replace the port replicator.
If the power-on indicator does not turn on, check the power cord of the AC Adapter for correct continuity and installation.
If the operational charge does not work, go to 'Checking operational charging'.
1. 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 not correct, replace the AC Adapter.
If the voltage is within the range, do the following:
Replace the system board.
If the problem persists, go to 'Undetermined problems'.

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

Note:

An audible noise from the AC Adapter does not always indicate a defect.

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