4535 612 10261 HD11 Service Manual Page 172
CSIP Level 1 Troubleshooting: All Troubleshooting Starts Here
• If possible, make hardcopy prints of the system displays that shows the first and subsequent
indications of the failure. Do this as soon as possible to ensure this type of data is not lost.
(Relevant data is often lost when the system is rebooted.)
• What, if anything, does the user do to recover from the problem?
• Does the symptom match up with any of the symptoms and solutions listed in Ta bl e 9 -2 ?
Re-creating a
Problem
Successfully re-creating a problem that doesn’t damage the system can produce information that
is useful to troubleshooting and solution verification. But, before you try, be sure that you have
noted all the useful information you can. Before changing anything, consider if the attempt will
cause the loss of information or will change a circumstance that is better than re-creating the
problem. If you decide to attempt to re-create the problem, try to do so several times.
Isolating Causes
Remember that, sometimes, more than one cause can produce similar symptoms. Try to identify
as many causes for the given symptom as your experience and research allows and then priori-
tize them in order of most likely root cause of the problem. Attempt to eliminate them
one-by-one, staring with the most likely cause.
Checking for Obvious Causes
Check for the following obvious causes:
• Check for correct voltage at electrical outlets, “tripped” circuit breakers, blown fuses, and
disconnected or damaged wires. Always check that power cords are plugged in, and inspect
them for wear.
• Consider the situation: Was there a system option or hardware change recently? When was
the last time the system was working correctly and what, if any, influencing circumstances
have occurred since?
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