125
User’s Manual
CellaVision
®
DM1200
11.2.3 General Processing Problems
Problem Cause Action
WBC images are not
centered on the cell, but
the cell can still be
seen.
System needs
calibration or
alignment.
Contact your local vendor’s technical
support.
Slide status:
Less than the ordered
number of cells are
collected.
Too small monolayer
found.
Prepare the slides with longer blood
films.
Artefacts (staining
precipitates) on the
slide.
Make sure that the solutions are
changed according to the
recommendations in Appendix G.
Dust on objectives. Perform weekly maintenance on the
current objective (see 10.1.1 Cleaning
of Objectives and LED table)
Slide status:
Could not find RBC
monolayer
Oil on the slide. Clean the oil off the slide and process it
again.
Slide status:
View the Slide
Information dialog for
more details.
No monolayer
found.
Make sure that the slides are prepared
according to the recommendations in
Appendix G.
Oil on the slide. Clean the oil off the slide and process it
again.
Oil or dust on the
objective.
Perform weekly maintenance on
objectives (see 10.1.1 Cleaning of
Objectives and LED table)
Images are not in focus. Dust on the
objective.
Perform weekly maintenance on
objectives (see 10.1.1 Cleaning of
Objectives and LED table
Incorrect objective
settings.
Contact your local vendor’s technical
support
Seemingly normal
slides get slide status:
Empty or no slide PID.
The barcode reader
is not connected.
Check the cabling of the barcode
reader.
No barcode found. Check positioning and size of the
barcode (see Appendix A — System
Specification).
The barcode could
not be read due to
bad print quality.
Clean the barcode printer head.
Replace the printer ribbon on the
barcode printer.
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