Installing The -48V Converters; Ringing Generators; Ringing Generators (890620) - Zhone IMACS 8000 User Manual

Running Head

Ringing Generators

2.4.8

Installing the -48V Converters

To install a -48V Converter in a chassis, proceed as follows. Refer to the system specification
section in this manual for the -48V Converters. Figure 2-4 shows the location of the fuse on
the converter board.
1. Remove the panel covering the rear power slots. You may insert or remove the module in
either slot NS1 or NS2 while power is on or off. You may insert or remove the panel while
power is on or off.
2. Hold the converter by its metal handle and align the PCB edges with the slot rail guides
in the chassis. Gently push the converter in until it is firmly seated in the backplane
connector.
3. When the power converter is installed and power is applied, the green LED on the front
panel of the converter should light. A problem exists if this LED does not light. Verify that
the power converter is properly seated in the connector. If so, also check the external
power source and connection to the power supply. If the power converter is properly
seated, and the external power source and power connections are operational, replace the
converter.
4. Replace the panel cover.
Handle
2.5 Ringing Generators
The ringing generator provides a ringing voltage of 105 VAC (nominal) at 20 Hz for
simultaneously ringing 11 voice ports. If more than one ringing generator is required in the
same chassis, they must have the same model number.
2-8
Fuse
Figure 2-4. -48V Converter Fuse
Model No.
System Installation
Power
Bus
Edge
Connector
Reference Guide