Kodak DryView 8300 Service Bulletins page 88

Service & Support
Health Imaging
Kodak DryView 8600/8610 LASER IMAGERS
Technical Bulletin
19-10/01 Scan Lines/Grid Lines Visible in the IMAGER
Problem
The customer has identified an intermittent pattern on the FILM that appears under magnification and
resembles "scan lines" or "grid lines." The lines are spaced at about 4-6 per mm and are most visible in the
mid-tone gray areas of test images with flat-field areas. These lines result from density variations and are
caused by small, intermittent placement errors of the actual scan lines. The eye sees these as "scan lines" or
"grid lines."
Cause
A vibration transmitted to the OPTICS MODULE causes the intermittent scan lines as the laser beam
images the FILM. A vibration in the bearings of the FAZ FILTER FAN is the most frequent cause. To
verify this, temporarily disconnect the power to the FAZ FILTER FAN.
Solution
If disconnecting the power or replacing the FAZ FILTER FAN does not decrease the artifact to a level
acceptable by the customer, you might have to install a new OPTICS MODULE. Call the Technical
Assistance Center at 1-800-328-2910, silent prompt 9 for permission to order a new OPTICS MODULE.
October 2001
Eastman Kodak Company
Health Imaging Products
1 Imation Way
Oakdale, MN 55128
http://www.kodak.com
Printed in the U.S.A.
© Kodak 2001