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Yellow (Environment) LED
Off No environmental problems detected by switch supervisor card.
On Warning of environmental condition out of nominal range. Preventative Maintenance should
be scheduled for this switch.
Flashing
Serious environmental condition detected; power shut off.
Green (Power) LED
Off No 48 V dc power available at switch assembly.
Flashing
Power available at switch assembly, but switch logic is Off.
On Power available at switch assembly, and logic is On.
Note: Refer to “Service position procedures” on page 3-10 for placing or removing the switch assembly
into or from service position.
Step 0590-001
Read the following warning and then follow steps to ensure continuity of customer’s jobs in the queue.
Attention: Servicing a processor node or switch assembly will interrupt customer usage of the processor
node and the remainder of the switch network. If the switch feature must be replaced in a multi-frame
system, refer to “Removing and restoring switch resources” on page 3-9, for information on isolating the
switch assembly.
Attention: It is possible that the SP Switch2 cabling has been modified from recommended or
documented configurations. Any connector jack numbers will be correct as reported by system programs,
so tracing cables from the jack may be necessary.
It may be necessary for the customer to complete all active parallel jobs or jobs using switch interface (for
example, tape B/U ADSM), then remove the switch feature from the active configuration. Refer to
“Removing and restoring switch resources” on page 3-9, for these procedures.
Step 0590-002
Determine the condition of the switch by viewing its LEDs and the information displayed in Perspectives.
Then refer to Table 1-1 on page 1-5 for a prioritized list of conditions. Find the first condition that describes
your problem, then perform the associated action.
Step 0590-003
Check for errors indicating environmental problems with the switch feature. These can be viewed by
issuing the appropriate command from the control workstation:
v errpt -a -N sphwlog | pg
v errpt -a -N css0
v errpt -a -N Worm
v Refer to the ″Starting a service call (MAP 0100)″ in
RS/6000 SP: System Service Guide
for more
information on the pg command
Switch Description and Problem Determination (MAP 0590)
1-4
RS/6000 SP: SP Switch2 Service Guide