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DEFINITY Enterprise Communications Server Release 6
Installation and Test for Multi-Carrier Cabinets
555-230-112
Issue 5
May 1998
Install and Wire Telephones and Other Equipment
Page 5-521145B Power Supply
5
Wire the 1146B Power Distribution Unit
Wire endpoints to the 1146B while power from the 1145B is on. A red LED lights if
its associated circuit is connected to shorted wiring or to a shorted terminal.
1. Install cross-connect jumpers to wire from the unit (the label shows
polarity) to pins 7 and 8 of the appropriate information outlet. Route the
wires through the clip provided on the unit. If a red LED is on, see ‘‘
Reset
LEDs on Power Distribution Unit’’.
2. Mark lead destinations on the label next to each connector. Also mark the
Unit Number and Connectivity information on the label.
Reset LEDs on Power Distribution Unit
A red LED next to any of the 32 power output connectors indicates a short circuit
in the building wiring or the terminal equipment. To reset the LED:
1. Disconnect the terminal equipment from the wall jack.
2. If the LED goes off, the terminal equipment is faulty and must be replaced.
If the LED is still lit, find and repair the short circuit in the building wiring.
3. Reconnect the terminal equipment to the wall jack and re-test terminal
equipment operation.
!
WARNING:
Important Safety Instructions follow.
When operating this equipment, basic safety precautions must be followed to
reduce the risk of fire, electric shock and personal injury, including the following:
■ Read and understand all instructions.
■ Do not attach the power supply cord to building surfaces.
■ For continued back-up protection and battery reliability, replace batteries
every 4 years.
■ Follow all warnings and instructions marked on the products.
■ Clean products only with a dry rag.
■ Do not use this product near water.
■ For mounting security, follow all installation instructions when mounting
product.
■ Openings on top and bottom of power unit are provided for ventilation. Do
not block or cover these openings. Do not exceed recommended
environmental temperatures.
■ Operate these products only from the type of power source indicated on
the product labels.