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Maintenance Analysis Procedures (MAPs)
The maintenance analysis procedures (MAPs) describe how to analyze a failure that
has occurred in an SSA loop.
Introduction to Using the MAPs
Do not turn off the system unit when servicing an SSA loop, unless the system unit
needs to be turned off for some other reason. Unit power cables and external SSA
cables that connect the devices to the system can be disconnected while that system is
running.
To isolate the FRUs, do the actions and answer the questions given in the MAPs.
When instructed to exchange two or more FRUs in sequence, proceed as follows:
1. Exchange the first FRU in the list for a new one.
2. Verify that the problem is solved. For some problems, verification means running
the diagnostic programs.
3. If the problem remains:
a. Reinstall the original FRU.
b. Exchange the next FRU in the list for a new one.
4. Repeat steps 2 and 3 until either the problem is solved, or all the related FRUs
have been exchanged.
5. Do the next action indicated by the MAP.
Remember that disk drives are fragile. Handle them with care and keep them well away
from strong magnetic fields.
A Note on Configurator Utilities
Text in this section refers to the DOS configurator. If you are using the RSM (Remote
System Management) configurator, all event logger functions can be accessed from the
Event Logger button on the main page. Diagnostic functions are available on each
Adapter View page.
The Physical view in the RSM is equivalent to the Disk Service Aids. Individual service
actions, such as Format, Certify and Set Service Mode are available on each individual
resource menu. Resource Views (Disks and RAID-5 arrays) are accessed from the
Logical View page.
Copyright IBM Corp. 1998 49