3Com 7750 Series User Manual - Page 16

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3Com 7750 Series User Manual
PoE Power Rack Installation Guide
on each power supply module.Wait approximately 10-30 seconds to allow the system to go through its
start-up procedure.
Verify that the green LED on the controller panel is on.
1)
Use a digital voltmeter to verify that the DC output voltage is approximately -54VDC
2)
For systems with more than one power supply module installed, turn one of the AC power input switches
to "OFF" to verify that the red alarm LED lights on the PoE Power Rack controller.
3)
For systems with more than one power supply module installed, turn the second AC input switch off to
verify that the FAULT LED lights on the controller. Clear the alarms by turning the AC input switch on.
Chapter 4 Installation and Debugging
4-6