Handling Abnormal Situations; Introduction - IBM System/370 145 Operating Procedures Manual

HANDLING ABNORMAL SITUATIONS
INTRODUCTION
This section can assist you to determine whether a problem
exists, and how to handle and report the specific type of
error you encounter.
Operator investigation and reporting of abnormal situa-
tions reduces overall system down time. The following
facilities are used to investigate abnormal situations.
1. Flowcharts (in this section)
2. PR-KB messages
3. System control panel switches and indicators
4. Automatic system checkout program (ASCP).
The flowcharts in this section can help you analyze
problems that cannot be rectified immediately. These
charts provide systematic checks that help identify a
hardware problem from a software or operational problem.
When using the flowcharts, always start with the
"Introductory Flowchart." This is an overview of the four
major type problems that can be encountered. When used
properly, it leads your to a specific problem flow.
You may be able to correct the problem yourself and
thus eliminate system down time. Any information you
gather can assist your service representative and shorten
system down time.
The flowcharts may direct you to examine PR-KB mes-
sages or system indicators and switches. If you are directed
to run ASCP, examine the reliability printout and relay all
pertinent information to the dispatcher when you place
a call for service.
Handling Abnormal Situations 83
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