USER’S MANUAL
TOP-X 100LC
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R-4709-EN/G
5. TROUBLESHOOTING
The following section contains a list of common simple problems and their solutions.
5.1 Exposure terminated with “INTERRUPTED EXP.” message
The generator terminated the exposure because you have released the exposure button
during X-ray switching. The button must be pressed during X-ray switching (indicated by
sound and X-ray symbol), unless you want to terminate the exposure. If you terminate
the exposure this way, the exposure will most likely be underexposed (light).
5.2 The exposure results in too dark or too light image (film)
The dosage reaching the cassette must be appropriate for the film density. Exposure
parameters must be selected accordingly:
X-ray tube voltage (kV)
X-ray tube current (mA)
exposure time (sec)
Instead of X-ray tube current (mA) and exposure time, X-ray tube current-time product
(mAs) can be used as well, provided the nature of the examination does not have
exposure time requirements (for example, short time for movement freezing or
tomography).
If you do not use exposure automatics (AEC) the exposure parameters must be selected
according to the following aspects:
film and screen properties
patient radial size, shape, examined tissue type
X-ray tube focal spot - film distance
the extent, type of other filters between X-ray tube focal spot and film
(tube’s inherent filtration, aperture, grid, examination device, etc. filtration)
nature of the examination
(for example, what you examine of the beam details, tomography, etc.)
If you use exposure automatics (AEC), of the above aspects patient properties, and
based on the nature of the examination X-ray tube voltage (kV) must be selected
appropriately; and X-ray tube current-time product (mAs) must be selected so it is
greater than the necessarily expected. In this case the selected current-time product
(mAs) is only the upper limit, which the generator can maximally release. If the
automatics do not shut off before exposure reaches this maximum value, the image will
most likely be underexposed (the film will be too light).
