ThermoFisher Scientific DXR xi, User Manual

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Thermo Scientific DXRxi User Guide 171
4
Troubleshooting
• Problems and Solutions
• Error Messages
Problems and Solutions
Performance Verification fails
• If a PV wavelength accuracy test failed (peak location is outside the specified limits), use
OMNIC software to open the spectral (.SPA) file from the most recent PV test. The most
recent PV test files (polystyrene spectrum and image map) are located here:
Thermo/OMNICxi/Spectra/PV Data
– If the spectrum contains excessive instrument noise (spikes), the polystyrene sample
may have been out of focus. Rerun the PV test making sure the focus is correct.
– If a wavelength accuracy test fails again, align and calibrate the installed laser set and
then rerun the PV test
If a wavelength accuracy test fails again, contact us.
• If the PV image resolution test failed (measured line spacing is outside the specified
limits), open the image map from the most recent PV test (see location above). The map
should contain vertical lines as in this example:
If there are no vertical lines in the collected map, check the following and then rerun the
PV test:
– Make sure the silicon test sample is right side up (the wording on the sample should
be right side up when you are looking at the sample through the microscope)