On power up the power supply runs a check on several internal systems to make sure all is working well prior to power up. The
"SELF-TEST ERROR" error is an internal error of the power supply that can occur during initial power on when the self-test is
performed. The unit must be sent in to the factory for repair.
"COMM TIMOUT" indicates that one of the power supplies communication ports has not responded in a timely manner. To
reset the power supply simply press the Output On/Off button.
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