Step 5
(from Step 4)
1. Set all circuit breaker switches in both circuit breaker panels to the Off position.
2. Reconnect all device power cables and return ground cables to the 20A/10A
circuit breaker panel except for cables to those positions which were out of
range in Step 3a.
Note: Visually check for shorts at the terminal lugs.
3. Set all circuit breaker switches in the 20A/10A circuit breaker panel to the On
position.
4. As in Step 3a, measure for -40 to -60 V DC between the -48 V DC supply and
positive ground return connectors for each of the eight circuit breakers in the
20A/10A circuit breaker panel including those positions which were out of range
in Step 3a.
Is the voltage between -40 and -60 V DC at each position?
NO An intermittent problem may exist in the power distribution system.
YES Set all circuit breaker switches in the 20A/10A circuit breaker panel to the
Off postion, and go to Step 6.
5-22 7014 Model S00 Rack Installation and Service Guide
To Next Page
Loading...
