Step 11
1. Set all circuit breaker switches on both circuit breaker panels to the Off position.
2. At the circuit breaker panel, disconnect both cables from the connectors for the
circuit breaker in question.
3. Set the circuit breaker switch for the 15A circuit breakers in question to the On
position.
4. Measure for -40 to -60 V DC between the -48 V DC supply and positive ground
return connectors for the 15A circuit breakers in question.
Is the voltage between -40 and -60 V DC?
NO Replace the 15A circuit breaker panel.
YES Replace the cables connecting the circuit breaker to the terminal strip.
5-26 7014 Model S00 Rack Installation and Service Guide
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