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NCT-1000/NCT-1020 User Guide
YML836 Rev2
Dual Power supply (power redundancy)
A dual AC/DC power supply shelf is provided with the IP DSLAM. The maintenance engineers can maintain
one of the power supplies without interruption of the system operation.
1. Disconnect the power of the power supply that fails.
2. Disconnect the AC power line from the shelf rear panel.
3. Remove the malfunctioning power supply from the power supply shelf.
4. Place the new power supply on the power supply shelf. The voltage of the power supply should be set up
correctly.
5. Assemble it onto the shelf, from the bottom with four screws.
6. Connect power connectors to the power terminals on the rear-panel of the shelf as follows:
Positive connector:
Connect to the terminal marked
PG
on the rear-panel.
Negative connector:
Connect to the terminal marked
-48V
on the rear-panel.
7. Connect the power connectors to the Power Supply; connect the positive power lead to the positive
terminal marked
POS(+)
, and connect the negative power lead to the terminal marked
NEG(-)
.
8. Turn on the power.
Summary of Contents for NCT-1000
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Page 7: ...NCT 1000 NCT 1020 User Guide 7 YML836 Rev2 Application 2...
Page 105: ...NCT 1000 NCT 1020 User Guide 105 YML836 Rev2 PART III APPENDICES...
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