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Chapter 2 - Installation
2.5
Powering Up
Once the power switch is turned on, the green LED on the power supply(s) should be lit and the modems
perform a diagnostic self-test, indicated by the speed LEDs flashing in sequence for approximately two
seconds. If none of the modems have power to them or the power supply LED(s) is not lit, check the power
cord connection and check that the AC outlet is live. If one of the green power supply LEDs on the front of the
rack is not lit, then one of the redundant power supplies may be defective or not installed correctly (i.e., not
making proper contact).
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