Thermo Scientific TSQ Endura and TSQ Quantiva Hardware Manual 79
Diagnostics and PCB and Assembly Replacement
The TSQ Endura and TSQ Quantiva system diagnostics can test many instrument
components. For example, the diagnostics can help you locate a problem with the instrument
electronics. Usually, replacing a faulty PCB or assembly can correct the problem. After
applying the fix, run the diagnostic tests again to verify that the instrument is functioning
properly.
Running the System Diagnostics
The system diagnostics test the major electronic circuits within the mass spectrometer and
indicate whether the circuits pass or fail the tests.
The 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, the person running the diagnostics must 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 service engineer to
run diagnostics, consider these questions:
• 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.
Contents
• Running the System Diagnostics
• Replacing Fuses, PCBs, and Power Supplies
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