1. From the node front panel on the control workstation, put the node in the SERVICE mode.
2. Power-on this processor node.
3. Go to “Step 0620-014”.
Step 0620-014
At this point, you must run the advanced diagnostics in service mode on the device “cssX” (where X=0 or
1) and its associated switch port.
1. Did you get an SRN from the diagnostics?
vIf yes, go to “Step 0620-016”.
vIf no, go to “Step 0620-015”.
Step 0620-015
Since the diagnostics did not return an SRN, no problem was detected.
1. Have you just reseated, repaired, or replaced a component?
vIf yes, go to “Step 0620-021” on page1-27 to verify fix.
vIf no:
a. Problem is in the switch assembly.
b. Go to “Step 0620-020” on page1-27 to service or replace switch assembly.
Step 0620-016
The advanced diagnostics returned an SRN indicating that the diagnostics detected a problem.
1. Is this SRN the same as the previous SRN?
vIf yes, go to “Step 0620-011”on page 1-24 to perform service on the next highest priority component
in the list for this SRN.
vIf no, go to “Step 0620-012” on page1-25 to service the new SRN.
Step 0620-017
An error message in the /var/adm/SPlogs/css0/p0/out.top file indicated that you either have an external
switch connection problem. Priority 3 in Table1-7 on page 1-22 directed you to this step.
1. Check the specified jacks at rear of switch assemblies for an obvious problem such as a loose
connection.
2. Pay special attention to cables that may have been moved recently.
3. Do connections appear to be okay?
vIf yes, go to “Step 0620-018”.
vIf no:
a. Fix the obvious connection problem.
b. Go to “Step 0620-021” on page1-27 to verify fix.
Step 0620-018
The /var/adm/SPlogs/css0/p0/out.top file indicated a switch problem and all connection appeared to be
okay.
Note: Be aware that in large systems, connections for switch assemblies not in the multi-switch frame are
usually scattered throughout the out.top file.
1. If this is a multi-frame system, check the indicated interposers against the wiring charts for
multi-frame switch systems.
2. Is this a multi-frame system with problems reported on all switch data cables from one or more
switches?
vIf yes:
a. Determine if a power or environmental problem exists on that switch.
b. Go to “Step 0590-003” on page1-4.
Switch Function (MAP 0620)
1-26 RS/6000 SP: SP Switch2 Service Guide