IBM RS/6000 SP, Maintenance Information

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MAP 0230: Wide Processor Node Control
035 (continued)
– Go to “MAP 0570: End of Call” on page 1-357.
036
3-digit LED problem.
– 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.
– Place processor node in service position.
– Refer to the following table for priority of replacement or repair of components.
Priority Component Action
1 Cable N00-SV-PS39 to N00-PL-P39 1. Check for proper seating. If no problem found,
continue at Priority 2.
2. Repair or replace cable assembly as required.
3. Go to Step 037 to verify fix.
2 Cable N00-PC-P40 to N00-PL-P40
and N00-PL-P41 1. Check for proper seating. If no problem found,
continue at Priority 3.
2. Repair or replace cable assembly as required.
3. Go to Step 037 to verify fix.
3 Wide Node Supervisor Card 1. Replace card.
2. Perform "Verification Test for Supervisor Bus" in
IBM RS/6000 SP: Maintenance Information,
Volume 3, Locations and Service Procedures.
3. Go to Step 037 to verify fix.
4 I/O Planar Board 1. Replace board.
2. Go to Step 037 to verify fix.
5 All Replaced Call next level of support.
037
Component has been repaired or replaced.
– Remove processor node from service position.
– Reconnect all cables at rear of the processor node.
– From the control workstation, power on this processor node.
– From the control workstation, make sure the 3-digit LEDs for this processor node are displayed on the
screen.
– Check the 3-digit LEDs for the IPL sequence.
Do the 3-digit LEDs indicate the IPL sequence?
Yes No
038
– Go to Step 036 to service next highest priority component.
039
– From the TTY console:
Ÿ Select “Advanced Diagnostic Routines”
(Step 039 continues)
Chapter 1. Maintenance Analysis Procedures (MAPs)
1-117