Preva Dental X-ray System User Manual, 00-02-1576, Revision ZA1
26
Solving Performance Issues
Light or Dark
X-ray Images
1. Adjust the selected exposure time, kilovoltage [kV], or tube current to
produce an acceptable image. If necessary, reprogram the technique
factors, as explained in the System Configuration section on page 26.
2. Verify the kilovoltage and tube current during an exposure using the
diagnostic mode, as explained in the System Configuration section.
Alternatively, a non-invasive meter can be used to evaluate kilovoltage
and exposure time.
3. Inspect the condition of the remaining imaging chain components such
as the film, chemistry and processor, and the condition of the X-ray
If no X-ray is produced, check the following:
1. Verify that the line cord (if one is in use) is properly connected.
2. Verify that the power switch is in the ON position.
Early release of the exposure button will cause a pre-termination error,
resulting in an underexposed image. After five seconds, the system will return
to the normal operating condition. See Exposure Button and Ready Indicator
on page 16 for more information
Technical Support
If the steps above do not resolve error issues, stop using the X-ray unit and contact Midmark Technical
Support for assistance.
1001 Asbury Dr.
Buffalo Grove, Illinois 60089 U.S.A.
Phone: 1-800-MIDMARK (800-643-6275)
Fax: 847-415-9801
imagingtechsupport@midmark.com
Hours: 8:00 a.m. ā 5:00 p.m. Central Time