Specifications

Appendix F. SSA Software and Microcode Errors
This appendix provides an explanation of serial storage architecture (SSA) software,
service request numbers (SRNs), and microcode errors.
Service Request Numbers (SRNs)
Service request numbers (SRNs) are generated for the SSA hot-swap disk drive by the
system error-log analysis, system configuration code, diagnostics, and customer
problem-determination procedures. SRNs help you to identify the cause of a problem,
the failing field-replaceable units (FRUs), and the service actions that might be needed
to solve the problem.
If you get an SRN that is not defined in the following table, see
Advanced SerialRAID
Adapters User’s Guide and Maintenance Information
, order number SA33-3285.
SRN Table
Table 12 on page 413 lists the SRNs and describes the actions you should perform. The
table columns are as follows:
SRN Service reference number
FRU List FRU or FRUs that might be causing the problem (see also “FRU
Names and Abbreviations Used in the SRN Table” on page 412)
% Probability (by percentage) that the FRU is causing the problem
Problem Description of the problem and the action you must take
Using the SRN Table
Important: You should have been sent here from SSA Maintenance Analysis
Procedures (MAPs) or
Diagnostic Information for Multiple Bus Systems ,
order number SA23-2769. Do not start problem determination from the
SRN table; always go to “SSA Maintenance Analysis Procedures (MAPs)”
on page 70 first.
1. Locate the SRN in the table. If you cannot find the SRN, there is a
problem with the diagnostics, the microcode, or the documentation. Call
your support center for assistance.
2. Read carefully the “Action” you must perform for the problem.
Do not
exchange FRUs unless you are instructed to do so
.
3. Normally exchange only one FRU at a time, starting from the top of the
FRU list for that SRN. Always use instructions given in the page
reference when exchanging FRUs. After each FRU is exchanged, go to
″MAP 410: Repair Checkout″ in
Diagnostic Information for Multiple Bus
Systems
to verify the repair.
Software and Microcode Errors
Some SRNs indicate that a problem might have been caused by a software error or by
a microcode error. If you have one of these SRNs, perform the following actions:
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