IBM RS6000 - 7026 - H70, Service Manual

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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:
1. Make a note of the contents of the error log for the device that has the problem.
2. Go to the using-system service aids and select Display Vital Product Data to
display the VPD of the failing system. Make a note of the VPD for all the SSA
adapters and disk drive modules.
3. Report the problem to your support center. The center can tell you whether you
have a known problem and can, if necessary, provide you with a correction for
the software or microcode.
FRU Names Used in the SRN Table
This section provides a glossary of the FRU names used.
FRU Name in Table Definition
Backplane assembly The disk drive modules, blank disk drive modules, and
internal SSA cables, are connected to the backplane
assembly.
Disk drive module A disk drive assembly to a carrier that plugs into the
backplane in the system unit.
Blank Disk drive module This module must be installed in a slot that does not
contain a disk drive module. This completes the SSA
loop through the system unit.
External SSA cable A cable that connects the bulkhead to the SSA adapter
or to an SSA subsystem.
Internal SSA cable Attaches the backplane to the SSA adapter card.
SSA adapter card The SSA adapter card, which is located in the using
system.
Appendix A. SSA Problem Determination Procedures
A-5