3Com DUA1698 User Manual

Also see for 3300 XM: User guide

The Power-up Sequence 29The Power-upSequenceThe following sections describe how to get your Switch 3300 XMpowered-up and ready for operation.Connecting aRedundant PowerSystemYou can connect a SuperStack Advanced Redundant Power System (partnumber 3C16071B) to the Switch. This unit, which is also known as anARPS, is designed to maintain the power to your Switch if a power supplyfailure occurs.For normal redundancy, the unit requires one Type 2A Power Module. Forfull redundancy, the unit requires two Type 2A Power Modules combinedusing a Type 2 Y-Cable.Check with your supplier that you have the correct Power Modules andcables for your ARPS unit.CAUTION: The Switch can only use a SuperStack Advanced RedundantPower System output.Powering-up theSwitch 3300 XMUse the following sequence of steps to power-up the Switch.CAUTION: The Switch has no ON/OFF switch; the only method ofconnecting or disconnecting main power is by connecting ordisconnecting the power cord.1 Plug the power cord into the power socket at the rear of the Switch.2 Plug the other end of the power cord into your power outletThe Switch powers-up and runs through its Power On Self Test (POST),which takes approximately 12 seconds.Checking for CorrectOperationDuring the Power On Self Test, all ports on the Switch are disabled andthe LEDs light in the following sequence: All unit LEDs light Port Status LEDs light in a rapid cycleWhen the POST has completed, check the Power/Self Test LED to checkthat your Switch is operating correctly. Table 4 shows possible colors forthe LED.