
1152700 • Issue 1 • February 2001 • Section 2 Operations and Maintenance
Page 1 of 1
POWER UP A CELLWORX STN NODE
Summary: This procedure provides instructions for verifying the source − 48 Vdc power supply.
1.Turn on the power source that will supply power to the system.
2.Use a
3.The measured voltage must be between − 42.5 Vdc and − 56.5 Vdc at the specified point. Was voltage within range specified? Note the polarity.
If No, proceed to step 4.
If Yes, continue with step 5.
4.The problem is in the power supply wiring or in the − 48 Vdc power supply. Isolate the problem using local troubleshooting practices and correct as required before installing power to the system. Repeat procedure after correcting problem.
5.Install fuses or engage the circuit breakers that supply power to the shelf. The front access cards should illuminate. This can be verified by observing the shelf alarm indicator on the front door panel. This will only light up if the SC cards are installed and an alarm is present. Refer to Figure
Stop! You have completed this procedure.
SHELF |
ALARM |
INDICATOR |
DOOR |
HINGES |
LOWER AIR INTAKE/ |
CABLE ROUTING TRAY |
UPPER HEAT BAFFLE/
FIBER MANAGEMENT TRAY
ESD GROUND JACK
DOOR
LATCH
Figure 700-1. Cellworx STN Component Identification
Page
© 2000, ADC Telecommunications, Inc.