
Chapter 7: Troubleshooting 245
No events in plots after
clicking Acquire Data
(continued)
Sample is not mixed properly Increase the Sample Agitation rate.
See Sample Agitation on page 81.
Sample line is clogged Perform a sample line backflush.
See Sample Line Backflush on
page 195. If necessary, change the
sample line.
Sample filter is clogged Replace sample filter.
Threshold not set to the
correct parameter (usually
FSC)
Set the threshold to the correct
parameter for your application.
Multiple threshold
parameters not set correctly
Verify that the correct Boolean
logic (And/Or) was used for the
threshold parameters.
Threshold channel too low or
too high
Adjust the Threshold channel. See
Calculating Compensation on
page 148.
Optical filter(s) not
completely seated
Make sure the filters are pushed all
the way in.
FSC area scaling is incorrect Ensure that the FSC-H matches
the FSC-A value.
No fluorescence signal Current cytometer
configuration different from
optical setup
Verify that the cytometer optics
match the current cytometer
configuration.
Wrong filter installed or filter
not completely seated
Make sure the appropriate filter is
installed for each fluorochrome.
Make sure the filters are pushed all
the way in.
Laser delay is set incorrectly Adjust the laser delay settings. See
Cytometer Quality Control Using
BD FACSDiva Software on
page 314.
Acquisition Troubleshooting (continued)
Observation Possible Causes Recommended Solutions
Komentarze do niniejszej Instrukcji