IBM RS/6000 SP, Maintenance Information

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MAP 0300: 332 MHz SMP Node Power
054 (continued)
Is this the only processor node showing this symptom?
Yes No
055
Problem with 48 V dc power distribution.
– Go to “MAP 0480: Open in 48 V dc Distribution” on page 1-283.
056
– Check the cable connections at the rear of the processor node and at the 48-volt power distribution
connection.
Is there a good connection?
Yes No
057
– Fix cable connection problem.
– Go to Step 050 on page 1-174.
058
– Put the circuit breakers in the 48-volt input cable in the “on” (1) position.
– Check for 48 volts present at the 332 MHz SMP processor node end of the input cable(s). Measure
between the voltage and the return pins.
Is there 48 volts present at the connector(s)?
Yes No
059
Voltage is missing at the input cable(s).
– Replace the 48-volt input cable(s).
Is 48 volts still missing at the connector end?
Yes No
060
– Go to Step 062.
061
– Go to “MAP 0480: Open in 48 V dc Distribution” on page 1-283.
062
48 volts distribution is getting to node.
– Check power supply green LED(s) and running fans.
Are the power supply green LED(s) On and fans running?
Yes No
063
– Go to MAP 0290: 332 MHz SMP Node Environment, Step 014 on page 1-161.
064
(Step 064 continues)
Chapter 1. Maintenance Analysis Procedures (MAPs)
1-175