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Power Up Switch
September 1995 Issue 1
7-3
Power up AC-Powered Switch
1. Ensure the associated circuit breakers on the AC power panel are ON.
NOTE:
If the system is configured for High or Critical Reliability, power-up
the Expansion Port Network (EPN) cabinet first, then the Processor
Port Network (PPN) cabinet.
Always
power up the Control Cabinet
last
in any multi-cabinet configuration.
2. At the rear of each cabinet, set the circuit breaker to ON. Go to ‘‘Verify
Messages.’’
NOTE:
This action starts the system initialization and test. All red lights on
the circuit packs go on and then off.
Power up DC-Powered Switch
1. At the DC Battery Cabinet, set circuit breaker to ON.
NOTE:
If the system is configured for High or Critical Reliability, power-up
the Expansion Port Network (EPN) cabinet first, then the Processor
Port Network (PPN) cabinet.
Always
power up the Control Cabinet
last
in any multi-cabinet configuration.
2. At DC Power Cabinet, set the circuit breaker(s) on the associated rectifiers
ON.
3. At the rear of each Power Distribution Unit, set the circuit breaker to ON.
NOTE:
This action starts the system initialization and test. All red lights on
the circuit packs go on and then off. Some red lights may come back
on in a few seconds or a few minutes and will be turned off by other
procedures in this chapter.
Verify Messages on Terminal
1. After several minutes, verify all tests pass.
NOTE:
If any of the terminal messages indicate a test has failed or the
message ‘‘spe down mode’’ is displayed, refer to
DEFINITY
Communications System Generic 1 and Generic 3i/s/vs
Maintenance
, 555-204-105, to clear the trouble, or call your AT&T
representative.