IBM RS/6000 SP, Maintenance Information

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MAP 0310: 332 MHz SMP Node Control
038 (continued)
Problem resolved.
– Go to “MAP 0570: End of Call” on page 1-357.
039
Yellow or green LED on node supervisor is not functioning.
– Have the customer remove the processor node from the active system configuration and power off the
processor node.
– Put the circuit breakers at the front of the processor node in the Off (‘0’) position.
– Perform "Node/Switch Supervisor Self-Test" in
IBM RS/6000 SP: Maintenance Information, Volume 3,
Locations and Service Procedures, ignoring PASS/FAIL results.
– Check yellow and green LEDs on the node supervisor card to see if each LED lights at some point.
Does each of the eight LEDs light at any time?
Yes No
040
– Place processor node in service position.
– Repeat "Node/Switch Supervisor Self-Test" in
IBM RS/6000 SP: Maintenance Information,
Volume 3, Locations and Service Procedures.
– Check to see if same color LED is always Off in front and rear.
Are LEDs of same color always Off in rear?
Yes No
041
– Replace LED display card.
– Perform "Node/Switch Supervisor Self-Test" in
IBM RS/6000 SP: Maintenance Information,
Volume 3, Locations and Service Procedures.
Do both LEDs light at any time?
Yes No
042
– Go to Step 044.
043
Problem resolved.
– Go to Step 045.
044
– Replace the node supervisor card.
– Perform "Node/Switch Supervisor Self-Test" in
IBM RS/6000 SP: Maintenance Information,
Volume 3, Locations and Service Procedures to verify replacement.
– Go to Step 045.
045
All LEDs are operating.
– Remove processor node from service position.
– Reconnect all cables at rear of the processor node.
(Step 045 continues)
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RS/6000 SP MAPs