Owner`s manual

Chapter 2 - Installation

4. With a Phillips screwdriver, tighten the power supply

screws.

Warning: If only a single power supply is used, then the

unused opening should have a power supply cover in

place.

5. If a second power supply is being installed, repeat steps 1

through 4.

6. Return to the rack installation procedure to continue

installing the rack.

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).