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4535 612 34161 HD3 Service Manual Page 146
CSIP Level 1 Troubleshooting: All Troubleshooting Starts Here
that unexpected result brings you closer to the actual cause of the problem. If it doesn’t, con-
sider returning the system to the known condition it was in before your last change and verify its
condition before proceeding.
Review your solution and any “discovery” that your change produced. Decide if you should pro-
ceed with your original solution or go back to investigating and testing. To avoid producing con-
fusing and conflicting data, do not deviate too far from the methodical approach that allows you
to isolate the failure by eliminating possible causes along the way.
Verifying
Corrective
Actions
Once the system fault has been identified and you have performed (authorized) corrective
actions to repair the failure, conduct whatever tests are necessary to ensure that the problem is
fixed and that the system meets its optimum level of performance. Typically, it will be the same
testing that led you to isolating the cause of the specific problem (refer to your notes) and then
additional tests that give you confidence that the system is generally performing as it should.