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Server Alarms - Avaya Support

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Communication Manager Maintenance Object Repair Procedures<br />

DC-Powered Cabinets<br />

DC Power-Distribution Unit (J58890CF-2)<br />

Figure 47: DC Power-Distribution Unit (J58890CF-2): Front shows a power-distribution unit in<br />

some DC-powered multicarrier cabinets. The unit sits at the bottom of the cabinet and contains<br />

the ring generator, 20-Amp circuit breakers, terminal blocks, and system fan power.<br />

Figure 47: DC Power-Distribution Unit (J58890CF-2): Front<br />

DC Power<br />

Distribution<br />

Unit<br />

Circuit<br />

Breakers<br />

4<br />

Terminal<br />

2<br />

Block<br />

Ring<br />

Generator<br />

mcc_dc_1 PDH 062696<br />

Some carriers may contain two power supplies, the 644A and the 645B, that together supply the<br />

required voltages to the carrier. Other carriers may contain one 649A power supply located on<br />

the right side of the carrier. In these systems, an additional 649A is located on the right of the<br />

optional switch node carriers.<br />

Figure 48: Typical Multicarrier Cabinet with 649A Power Units shows a typical AC-powered<br />

multicarrier cabinet.<br />

634 Maintenance <strong>Alarms</strong> for <strong>Avaya</strong> Communication Manager, Media Gateways and <strong>Server</strong>s

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