IBM RS/6000 SP, Maintenance Information

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MAP 0340: POWER3 SMP Thin and Wide Node Power
047 (continued)
Was a shorted condition detected?
Yes No
048
– Replace the power/supervisor cable assembly in the logic part of the node.
– Remove processor node from service position.
– Reconnect all cables at rear of processor node.
– Go to Step 041 on page 1-204.
049
– Replace corresponding power supply.
– Remove processor node from service position.
– Reconnect all cables at rear of processor node.
– Go to Step 041 on page 1-204.
050
– From control workstation or processor node, check node supervisor green LED 1 for this node.
Is node supervisor green LED 1 off or is ‘No Power to Node’ displayed on the control workstation?
Yes No
051
Processor node problem resolved.
– Go to “MAP 0570: End of Call” on page 1-357.
052
– Check processor node(s) on any other dc power harness for any that are powered on. Ensure that the
other processor node has its circuit breaker in the On (‘1’) position.
– Check the green LED 1 for an On or Flashing condition.
– POWER3 SMP processor nodes receive 48-volt power by connecting a power cable between the node
and the SEPBU bulkhead.
PDU-BH-P1: Processor nodes 1, 2, 3, 4
PDU-BH-P2: Processor nodes 5, 6, 7, 8
PDU-BH-P3: Processor nodes 9, 1ð, 11, 12
PDU-BH-P4: Processor nodes 13, 14, 15, 16
PDU-BH-P21: first SMP Node 1
PDU-BH-P22:
Second SMP Node 5
PDU-BH-P23: Third SMP Node 9
PDU-BH-P24:
Fourth SMP Node 13
Is the green LED 1 on any other processor node On or Flashing?
Yes No
053
– Go to “MAP 0370: Main Power” on page 1-222.
054
– Check all other processor nodes on the same dc power harness as the failing processor node to check
for the same symptom - circuit breaker on but green LED 1 not lit.
(Step 054 continues)
Chapter 1. Maintenance Analysis Procedures (MAPs)
1-205