Accton Technology 12mi SNMP, 12i manual Powering on the Hub, Diagnostic Tests

Fast EtherHub 3500 System User’s Guide

Powering on the Hub

1.Plug one end of the power cord into a power outlet, and the other end into the power socket at the rear of the hub (in that order for reasons of safety). Then plug in the backup power module if you purchased this option. For reliable backup, connect the backup power module to a separate AC circuit.

2.Check the LED indicator marked PWR1 (or PWR2) on the front panel to see if it is on. The unit will automatically select the setting that matches the connected input voltage. Therefore, no additional adjustments are necessary when connecting it to any input voltage within the range marked on the rear panel.

3.The hub performs a self-diagnostic test upon power-on. (Note that this test takes about 15 seconds to complete.) For details about the system self-diagnostic test, refer to the following section.

ΙThe unit supports a "hot remove" feature which permits you to connect/disconnect network cables without powering off the hub and without disrupting the operation of the hubs in stack. However, when changing SmartExtender Modules or power supply modules, first disconnect power to the concerned hub.

Diagnostic Tests

Upon power on, the system performs an internal self-diagnostic test of major hub components. If any component fails during the test, the hub will try to complete the diagnostic procedure. Otherwise, the system will hang. For related information, refer to Diagnostics Test Indicators in Chapter 5.

2-12 Installing the System