User Manual

Operational Checkout and System Commissioning
163
3. Identify which parameters need to be evaluated.
Identifying which parameters need to be evaluated requires a clear understanding of
the discrepancy and which signals affect the suspected component. Which input
signals control the component? What is the expected output from the suspect circuit?
Is there a timing delay, sequence, or set point that can be verified?
4. Identify the source of the problem.
Identifying the source of the problem requires the technician to isolate components
and evaluate circuit parameters; to isolate the circuit by group when dealing with a
complicated circuit (half-step approach); and to identify the malfunctioning
component using the recorded data.
5. Correct/repair the component.
Correct or repair the component identified as damaged based on the recorded data.
Perform the required repairs to the circuit. Completing step 5 can range from simple
adjustments to a complete component replacement.
6. Verify the repair.
Verify the repair after completion. Ensure the equipment is operating as designed.
Perform another round of testing to verify the equipment is in fact running correctly
and that no other discrepancies exist. Often this is referred to as performance of an
operational checkout.
7. Perform root cause analysis.
Performing a root cause analysis, even though mentioned last, began in the first step
of the troubleshooting process. You should use the knowledge gained throughout the
troubleshooting process in determining what could have possibly caused the
component to fail.
Did the component fail prematurely? Without identifying the possible cause that led
to the failure, the repair will always be only temporary. While working through the
troubleshooting process, ask yourself, “Is this the root cause or just a symptom of the
problem?”
By following a well thought-out systematic process when challenged with an electrical
troubleshooting problem, you will greatly enhance your effectiveness. Invest a little time
up front doing your research and determining your troubleshooting plan of action.
System Troubleshooting Index
Click a link below to go directly to the steps to correct one of typical problem.
Gateway Router will not power up
Gateway Server will not power up
MMR System will not power up
System will not power up
Ethernet Switch will not power up
PDA will not run an incident