IBM RS/6000 SP, Maintenance Information

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MAP 0390: Supervisor Power Problem
– Make sure that all circuit breakers feeding power to this frame are in the On (‘1’) position. This includes
the customer's circuit breaker, the circuit breaker for the frame, and the circuit breakers on the high-
voltage transformer (if present).
– Once all circuit breakers have been put in the On ('1) position, verify that they have all stayed in the On
(‘1’) position.
Do all circuit breakers stay in the ('On') position.
Yes No
050
Problem not resolved.
– Restart this MAP at Step 001 on page 1-229.
051
No apparent shorts to 12/24 V supervisor power supplies in this frame.
– Check the Power Distribution Unit rear panel LED and the frame supervisor LEDs for any LEDs that are
lit.
Are the Power Distribution Unit rear panel LED or any frame supervisor LEDs lit?
Yes No
052
Problem not resolved.
– Go to Step 001 on page 1-229.
053
Supervisor power problem resolved.
– Reinstall service access cover on the high-voltage transformer (if present).
– Put main power switch on the On (‘1’) position.
– Check the PDU rear panel LED and the frame supervisor LEDs for any LEDs that are lit.
Are the PDU rear panel LED or any frame supervisor LEDs lit?
Yes No
054
– Isolate short between contactor T1, T2, T3 and 48 V power chassis 01, 02, and 03.
– Replace parts as required.
– Go to Step 051 to verify fix.
055
Problem resolved.
– Reinstall PDU access cover(s).
– Go to “MAP 0570: End of Call” on page 1-357.
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RS/6000 SP MAPs