Chapter 18: Troubleshooting
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Cannot connect to the SQL Server
If a new user cannot log on, then add the user to the SQL database. See
to the SQL Server Database on page 207
.
If the user does not have administrator privileges, then change the program compatibility
settings to run the program as an administrator. See
.
If you have recently renamed the computer, reset the path to the SQL Server. See
the Path to the SQL Server on page 207
.
Troubleshooting Barcodes
If you use barcodes and the instrument does not detect them correctly, try the following:
Rotate the plate 180 degrees. The instrument scans from either the front or the back, but
only one sensor is active. Contact Molecular Devices Technical Support if you need to
change the scan direction on your instrument.
If one out of 10 plates fails to be read, check the placement of the barcode label on the
plate. This might be fixed with a small change in the plate configuration.
Add more white space at beginning or end.
Restrict numbers to a maximum of six (6) digits.
Verify that the codes meet the requirements. See
.
If detection is still a problem, contact Molecular Devices Technical Support. See
Fluorescence Problems and Possible Solutions
No signal is detected in the fluorescence channel
Confirm that the biology sample is fluorescing.
Make sure that the correct filter pair is selected.
Visually check that the light is coming through.
Make sure that sufficient exposure time has been set.
Excessive background fluorescence
Check the integrity of the biological sample. The fluorescence can leach into the agar.
Reduce the exposure time.
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