4-10 Maintenance
5150 Service Aggregation Switch Hardware Installation and Start-up Manual
009-3222-001 Standard Revision H
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2012-2015 Ciena
®
Corporation July 2015
8 Use the terminal block on the front of the DC power supply to connect the
wires as follows:
• Ground — connect to the right connector
• Negative — connect to the middle connector
• Positive — connect to the left connector
Note: The ground connection should be made first.
9 Tighten the set screws on the terminal block with a Phillips screwdriver.
10 Use a cable tie to attach the power wires to the handle of the power supply.
This helps relieve the cord weight from the connector and avoid the
inadvertent disconnection of the power supply cord.
11 At the DC input circuit, restore power to the DC circuit.
The power supply will turn on.
12 Verify the power supply LEDs. The following LED indications should be
present on the 5150:
• PS A - Status LED is solid green, Input LED is solid green
• PS B - Status LED is solid green, Input LED is solid green
• PWR - solid green
Note: The system does not distinguish between a faulty and an unpowered
supply. As a result, if redundant power supplies are installed, but only one
supply is connected to a power source, the unpowered supply will cause the
system to report an alarm state (ALRM LED solid yellow and STAT LED off).
This alarm will be cleared when the power supply is properly initialized.
Note: The system can operate with only one power supply receiving power.
But both power supplies must be installed. Power from the backplane of the
chassis will be used to activate the fans in the unpowered supply and assist
with cooling the 5150.
The power supply has now been replaced and the system has been
returned to full redundant power supply status.
WARNING: When making connections to the terminal block, make sure that no stray
strands of the input wire come into contact with any other part of the terminal block.
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