IBM RS/6000 SP, Maintenance Information

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MAP 0390: Supervisor Power Problem
033 (continued)
PDU-CB-C2 to PDU-S1-L2/N
PDU-CB-L2 to PDU-S2-L1
PDU-CB-C2 to PDU-S2-L2/N
– Check for a short condition between the following points:
PDU-CB-L2 to PDU-CB-C2
PDU-CB-L2 to PDU-CB-R2
PDU-CB-C2 to PDU-CC-R2
ADC-TB-01 to ADC-TB-02
ADC-TB-01 to ADC-TB-03
ADC-TB-02 to ADC-TB-03
Do the cables appear to be okay?
Yes No
034
– Fix the obvious cable problem.
– Go to Step 051 on page 1-236 to verify fix.
035
– With power removed, put main circuit breaker in On (‘1’) position.
– Check continuity of the three phases between ac filter and the circuit breaker output using the following
test points:
Ÿ ac filter O1 to top left of main circuit breaker
Ÿ ac filter O2 to top center of main circuit breaker
Ÿ ac filter O3 to top right of main circuit breaker
Is there continuity on all three phases?
Yes No
036
– Check continuity across main circuit breaker on all three phases. This is done by checking conti-
nuity between corresponding test points directly above to test points directly below the main
circuit breaker.
Is there continuity on all three phases across circuit breaker?
Yes No
037
– Replace main circuit breaker.
– Go to Step 049 on page 1-236 to verify fix.
038
– Check continuity of the three phases from the ac filter to the circuit breaker input using the fol-
lowing test points:
Ÿ ac filter O1 to top left of main circuit breaker
Ÿ ac filter O2 to top center of main circuit breaker
Ÿ
ac filter O3 to top right of main circuit breaker
(Step 038 continues)
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RS/6000 SP MAPs