7
Diagnostics and PCB and Assembly Replacement
Running the TSQ System Diagnostics
104 TSQ Series Hardware Manual Thermo Scientific
Running the TSQ System Diagnostics
The TSQ system diagnostics are used to test the major electronic circuits within the
instrument and indicate whether the circuits pass or fail the tests. If there is a problem with
the instrument electronics, the TSQ system diagnostics can often locate the problem.
The TSQ system diagnostics do not diagnose problems that are not electrical in nature. For
example, they do not diagnose poor sensitivity due to misaligned or dirty components or to
improper tuning. Therefore, it is important that the person running the diagnostics be
familiar with system operation and basic hardware theory as well as the details of the
diagnostics.
Typically, only a Thermo Fisher Scientific service engineer runs diagnostic tests because
certain tests can overwrite system parameters. However, before calling a Thermo Fisher
Scientific service engineer to run diagnostics, consider the following:
• Did the system fail when you were running samples?
• Did problems occur after you performed maintenance on the instrument, data system, or
peripherals?
• Did you change the configuration of the system, cables, or peripherals just before the
problem occurred?
If the answer is yes to the first item above, there is the possibility of a hardware failure, and
running the diagnostics is appropriate.
If the answer is yes to either of the last two questions above, the problem is probably
mechanical, not electrical. Verify again that alignment, configurations, and cable connections
are correct before you call the Thermo Fisher Scientific service engineer. Keep careful notes
documenting the nature of the problem and the corrective steps you have taken. If you are not
successful in correcting the problem, you can email this information to your service engineer.
The Field Service department can then do a preliminary evaluation of the problem before an
engineer arrives at your site.
CAUTION Non-expert users should run only the following diagnostics because certain
diagnostics can overwrite system parameters.
•Ion Source Board
•System Control
• Analyzer Control Board
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