Villa Rotograph EVO, Руководство по обслуживанию

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SERVICE MANUAL
Troubleshooting
Rotograph EVO (Rev. 1) 8-76
•
Images too dark
Possible cause:
Exposure parameters too high with respect to the patient size.
Remedy:
–
Decrease the exposure parameters
–
Check that the development process (liquids, temperatures,
duration, etc.).
•
Image without contrast (flat image)
In the case the film has a poor contrast (flat image), there can be
different causes.
Possible cause Remedy
kV value too high Decrease the kV value
Improper film-screen combination Check film-screen compatibility
Edge of the film (non-exposed area)
blurred Check the film (expiration date,
storage)
•
Blurred film
Possible cause:
This problem is normally coupled to the presence of poor brightness
in the areas with metal parts.
This may indicate a problem of the dark room (the film has been
exposed to the light during the handling), or to the wrong storage of
the film package or, the films themselves are expired.
Also the film package has been unintentionally exposed to X-ray.
Remedy:
Avoid the above conditions.