IBM RS/6000 SP, Maintenance Information

Page: 138 / 388

MAP 0230: Wide Processor Node Control
039 (continued)
Ÿ Select “System Verification”
Ÿ Select “Base System”
Does processor node pass all diagnostics?
Yes No
040
– Repair problem as indicated by diagnostics. Use “MAP 0130: Processor Node” on page 1-30 as
necessary.
041
Problem resolved.
– Go to “MAP 0570: End of Call” on page 1-357.
042
Yellow or green LED on processor node is not functioning.
– Have the customer remove the processor node from the active system configuration and power off the
processor node.
– Put the circuit breaker 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 at front and rear of processor to see if each LED lights at some point.
Does each of the four LEDs light at any time?
Yes No
043
– 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
044
– 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
045
– Go to Step 047 on page 1-119.
046
Problem resolved.
– Go to Step 048 on page 1-119.
047
1-118
RS/6000 SP MAPs